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-rw-r--r--compiler/rustc_mir_transform/src/coverage/counters.rs37
-rw-r--r--tests/coverage/abort.cov-map42
-rw-r--r--tests/coverage/async.cov-map16
-rw-r--r--tests/coverage/async2.cov-map16
-rw-r--r--tests/coverage/async_block.cov-map16
-rw-r--r--tests/coverage/branch/generics.cov-map24
-rw-r--r--tests/coverage/branch/if-let.cov-map8
-rw-r--r--tests/coverage/branch/if.cov-map140
-rw-r--r--tests/coverage/branch/lazy-boolean.cov-map107
-rw-r--r--tests/coverage/branch/let-else.cov-map8
-rw-r--r--tests/coverage/branch/while.cov-map26
-rw-r--r--tests/coverage/closure.cov-map80
-rw-r--r--tests/coverage/closure_bug.cov-map109
-rw-r--r--tests/coverage/closure_macro.cov-map8
-rw-r--r--tests/coverage/closure_macro_async.cov-map8
-rw-r--r--tests/coverage/conditions.cov-map404
-rw-r--r--tests/coverage/coroutine.cov-map8
-rw-r--r--tests/coverage/dead_code.cov-map8
-rw-r--r--tests/coverage/drop_trait.cov-map8
-rw-r--r--tests/coverage/fn_sig_into_try.cov-map24
-rw-r--r--tests/coverage/generics.cov-map8
-rw-r--r--tests/coverage/if.cov-map8
-rw-r--r--tests/coverage/if_else.cov-map21
-rw-r--r--tests/coverage/if_not.cov-map38
-rw-r--r--tests/coverage/inline-dead.cov-map8
-rw-r--r--tests/coverage/inline.cov-map8
-rw-r--r--tests/coverage/inner_items.cov-map21
-rw-r--r--tests/coverage/issue-84561.cov-map167
-rw-r--r--tests/coverage/lazy_boolean.cov-map236
-rw-r--r--tests/coverage/loops_branches.cov-map240
-rw-r--r--tests/coverage/match_or_pattern.cov-map96
-rw-r--r--tests/coverage/no_cov_crate.cov-map16
-rw-r--r--tests/coverage/overflow.cov-map8
-rw-r--r--tests/coverage/simple_loop.cov-map23
-rw-r--r--tests/coverage/simple_match.cov-map35
-rw-r--r--tests/coverage/sort_groups.cov-map40
-rw-r--r--tests/coverage/try_error_result.cov-map32
-rw-r--r--tests/coverage/unicode.cov-map28
-rw-r--r--tests/coverage/uses_inline_crate.cov-map8
-rw-r--r--tests/coverage/while.cov-map8
-rw-r--r--tests/mir-opt/coverage/instrument_coverage.main.InstrumentCoverage.diff6
-rw-r--r--tests/mir-opt/coverage/instrument_coverage_cleanup.main.CleanupPostBorrowck.diff4
-rw-r--r--tests/mir-opt/coverage/instrument_coverage_cleanup.main.InstrumentCoverage.diff4
43 files changed, 845 insertions, 1315 deletions
diff --git a/compiler/rustc_mir_transform/src/coverage/counters.rs b/compiler/rustc_mir_transform/src/coverage/counters.rs
index 908b1495b66..b5968517d77 100644
--- a/compiler/rustc_mir_transform/src/coverage/counters.rs
+++ b/compiler/rustc_mir_transform/src/coverage/counters.rs
@@ -115,6 +115,43 @@ impl CoverageCounters {
         expressions: &mut IndexVec<ExpressionId, BcbExpression>,
         new_expr: BcbExpression,
     ) -> BcbCounter {
+        // Simplify expressions using basic algebra.
+        //
+        // Some of these cases might not actually occur in practice, depending
+        // on the details of how the instrumentor builds expressions.
+        let BcbExpression { lhs, op, rhs } = new_expr;
+
+        if let BcbCounter::Expression { id } = lhs {
+            let lhs_expr = &expressions[id];
+
+            // Simplify `(a - b) + b` to `a`.
+            if lhs_expr.op == Op::Subtract && op == Op::Add && lhs_expr.rhs == rhs {
+                return lhs_expr.lhs;
+            }
+            // Simplify `(a + b) - b` to `a`.
+            if lhs_expr.op == Op::Add && op == Op::Subtract && lhs_expr.rhs == rhs {
+                return lhs_expr.lhs;
+            }
+            // Simplify `(a + b) - a` to `b`.
+            if lhs_expr.op == Op::Add && op == Op::Subtract && lhs_expr.lhs == rhs {
+                return lhs_expr.rhs;
+            }
+        }
+
+        if let BcbCounter::Expression { id } = rhs {
+            let rhs_expr = &expressions[id];
+
+            // Simplify `a + (b - a)` to `b`.
+            if op == Op::Add && rhs_expr.op == Op::Subtract && lhs == rhs_expr.rhs {
+                return rhs_expr.lhs;
+            }
+            // Simplify `a - (a - b)` to `b`.
+            if op == Op::Subtract && rhs_expr.op == Op::Subtract && lhs == rhs_expr.lhs {
+                return rhs_expr.rhs;
+            }
+        }
+
+        // Simplification failed, so actually create the new expression.
         let id = expressions.push(new_expr);
         BcbCounter::Expression { id }
     }
diff --git a/tests/coverage/abort.cov-map b/tests/coverage/abort.cov-map
index 1c36f2871dd..5673fa98ca6 100644
--- a/tests/coverage/abort.cov-map
+++ b/tests/coverage/abort.cov-map
@@ -1,45 +1,37 @@
 Function name: abort::main
-Raw bytes (105): 0x[01, 01, 12, 01, 47, 05, 09, 03, 0d, 42, 11, 03, 0d, 11, 3e, 42, 11, 03, 0d, 3b, 15, 11, 3e, 42, 11, 03, 0d, 15, 36, 3b, 15, 11, 3e, 42, 11, 03, 0d, 05, 09, 0d, 01, 0e, 01, 01, 1b, 03, 02, 0b, 00, 18, 42, 01, 0c, 00, 19, 11, 00, 1a, 02, 0a, 3e, 02, 0a, 00, 0b, 3b, 02, 0c, 00, 19, 15, 00, 1a, 00, 31, 36, 00, 31, 00, 32, 33, 04, 0c, 00, 19, 05, 00, 1a, 00, 31, 09, 00, 31, 00, 32, 47, 01, 09, 00, 17, 0d, 02, 05, 01, 02]
+Raw bytes (89): 0x[01, 01, 0a, 01, 27, 05, 09, 03, 0d, 22, 11, 03, 0d, 03, 0d, 22, 15, 03, 0d, 03, 0d, 05, 09, 0d, 01, 0e, 01, 01, 1b, 03, 02, 0b, 00, 18, 22, 01, 0c, 00, 19, 11, 00, 1a, 02, 0a, 0e, 02, 0a, 00, 0b, 22, 02, 0c, 00, 19, 15, 00, 1a, 00, 31, 1a, 00, 31, 00, 32, 22, 04, 0c, 00, 19, 05, 00, 1a, 00, 31, 09, 00, 31, 00, 32, 27, 01, 09, 00, 17, 0d, 02, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 18
-- expression 0 operands: lhs = Counter(0), rhs = Expression(17, Add)
+Number of expressions: 10
+- expression 0 operands: lhs = Counter(0), rhs = Expression(9, Add)
 - expression 1 operands: lhs = Counter(1), rhs = Counter(2)
 - expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
-- expression 3 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 3 operands: lhs = Expression(8, Sub), rhs = Counter(4)
 - expression 4 operands: lhs = Expression(0, Add), rhs = Counter(3)
-- expression 5 operands: lhs = Counter(4), rhs = Expression(15, Sub)
-- expression 6 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 5 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 6 operands: lhs = Expression(8, Sub), rhs = Counter(5)
 - expression 7 operands: lhs = Expression(0, Add), rhs = Counter(3)
-- expression 8 operands: lhs = Expression(14, Add), rhs = Counter(5)
-- expression 9 operands: lhs = Counter(4), rhs = Expression(15, Sub)
-- expression 10 operands: lhs = Expression(16, Sub), rhs = Counter(4)
-- expression 11 operands: lhs = Expression(0, Add), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(5), rhs = Expression(13, Sub)
-- expression 13 operands: lhs = Expression(14, Add), rhs = Counter(5)
-- expression 14 operands: lhs = Counter(4), rhs = Expression(15, Sub)
-- expression 15 operands: lhs = Expression(16, Sub), rhs = Counter(4)
-- expression 16 operands: lhs = Expression(0, Add), rhs = Counter(3)
-- expression 17 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 8 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 9 operands: lhs = Counter(1), rhs = Counter(2)
 Number of file 0 mappings: 13
 - Code(Counter(0)) at (prev + 14, 1) to (start + 1, 27)
 - Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
     = (c0 + (c1 + c2))
-- Code(Expression(16, Sub)) at (prev + 1, 12) to (start + 0, 25)
+- Code(Expression(8, Sub)) at (prev + 1, 12) to (start + 0, 25)
     = ((c0 + (c1 + c2)) - c3)
 - Code(Counter(4)) at (prev + 0, 26) to (start + 2, 10)
-- Code(Expression(15, Sub)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(3, Sub)) at (prev + 2, 10) to (start + 0, 11)
     = (((c0 + (c1 + c2)) - c3) - c4)
-- Code(Expression(14, Add)) at (prev + 2, 12) to (start + 0, 25)
-    = (c4 + (((c0 + (c1 + c2)) - c3) - c4))
+- Code(Expression(8, Sub)) at (prev + 2, 12) to (start + 0, 25)
+    = ((c0 + (c1 + c2)) - c3)
 - Code(Counter(5)) at (prev + 0, 26) to (start + 0, 49)
-- Code(Expression(13, Sub)) at (prev + 0, 49) to (start + 0, 50)
-    = ((c4 + (((c0 + (c1 + c2)) - c3) - c4)) - c5)
-- Code(Expression(12, Add)) at (prev + 4, 12) to (start + 0, 25)
-    = (c5 + ((c4 + (((c0 + (c1 + c2)) - c3) - c4)) - c5))
+- Code(Expression(6, Sub)) at (prev + 0, 49) to (start + 0, 50)
+    = (((c0 + (c1 + c2)) - c3) - c5)
+- Code(Expression(8, Sub)) at (prev + 4, 12) to (start + 0, 25)
+    = ((c0 + (c1 + c2)) - c3)
 - Code(Counter(1)) at (prev + 0, 26) to (start + 0, 49)
 - Code(Counter(2)) at (prev + 0, 49) to (start + 0, 50)
-- Code(Expression(17, Add)) at (prev + 1, 9) to (start + 0, 23)
+- Code(Expression(9, Add)) at (prev + 1, 9) to (start + 0, 23)
     = (c1 + c2)
 - Code(Counter(3)) at (prev + 2, 5) to (start + 1, 2)
 
diff --git a/tests/coverage/async.cov-map b/tests/coverage/async.cov-map
index e06d1676358..7d16372375a 100644
--- a/tests/coverage/async.cov-map
+++ b/tests/coverage/async.cov-map
@@ -7,19 +7,17 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 9, 1) to (start + 0, 25)
 
 Function name: async::c::{closure#0}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 09, 19, 01, 0e, 05, 02, 09, 00, 0a, 02, 02, 09, 00, 0a, 07, 02, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 09, 19, 01, 0e, 05, 02, 09, 00, 0a, 02, 02, 09, 00, 0a, 01, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 9, 25) to (start + 1, 14)
 - Code(Counter(1)) at (prev + 2, 9) to (start + 0, 10)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 10)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 1) to (start + 0, 2)
 
 Function name: async::d
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 11, 01, 00, 14]
@@ -188,19 +186,17 @@ Number of file 0 mappings: 9
     = ((c1 + c2) + c3)
 
 Function name: async::j::c
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 37, 05, 01, 12, 05, 02, 0d, 00, 0e, 02, 0a, 0d, 00, 0e, 07, 02, 05, 00, 06]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 37, 05, 01, 12, 05, 02, 0d, 00, 0e, 02, 0a, 0d, 00, 0e, 01, 02, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 55, 5) to (start + 1, 18)
 - Code(Counter(1)) at (prev + 2, 13) to (start + 0, 14)
 - Code(Expression(0, Sub)) at (prev + 10, 13) to (start + 0, 14)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 5) to (start + 0, 6)
 
 Function name: async::j::d
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 46, 05, 00, 17]
diff --git a/tests/coverage/async2.cov-map b/tests/coverage/async2.cov-map
index 28f319bfb80..e39a1d7dd2f 100644
--- a/tests/coverage/async2.cov-map
+++ b/tests/coverage/async2.cov-map
@@ -7,17 +7,15 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 13, 1) to (start + 0, 23)
 
 Function name: async2::async_func::{closure#0}
-Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 0d, 17, 03, 09, 05, 03, 0a, 02, 06, 00, 02, 06, 00, 07, 03, 01, 01, 00, 02]
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 0d, 17, 03, 09, 05, 03, 0a, 02, 06, 00, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 1
-- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of expressions: 0
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 13, 23) to (start + 3, 9)
 - Code(Counter(1)) at (prev + 3, 10) to (start + 2, 6)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(0, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + Zero)
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: async2::async_func_just_println
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 15, 01, 00, 24]
@@ -44,15 +42,13 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 25, 1) to (start + 7, 2)
 
 Function name: async2::non_async_func
-Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 05, 01, 03, 09, 05, 03, 0a, 02, 06, 00, 02, 06, 00, 07, 03, 01, 01, 00, 02]
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 05, 01, 03, 09, 05, 03, 0a, 02, 06, 00, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 1
-- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of expressions: 0
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 5, 1) to (start + 3, 9)
 - Code(Counter(1)) at (prev + 3, 10) to (start + 2, 6)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(0, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + Zero)
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/async_block.cov-map b/tests/coverage/async_block.cov-map
index 104133f6e67..e54c15c0436 100644
--- a/tests/coverage/async_block.cov-map
+++ b/tests/coverage/async_block.cov-map
@@ -1,10 +1,9 @@
 Function name: async_block::main
-Raw bytes (38): 0x[01, 01, 02, 01, 05, 03, 05, 06, 01, 05, 01, 00, 0b, 05, 01, 09, 00, 0a, 03, 00, 0e, 00, 13, 05, 00, 14, 01, 16, 05, 07, 0a, 02, 06, 06, 03, 01, 00, 02]
+Raw bytes (36): 0x[01, 01, 01, 01, 05, 06, 01, 05, 01, 00, 0b, 05, 01, 09, 00, 0a, 03, 00, 0e, 00, 13, 05, 00, 14, 01, 16, 05, 07, 0a, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(1)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 5, 1) to (start + 0, 11)
 - Code(Counter(1)) at (prev + 1, 9) to (start + 0, 10)
@@ -12,21 +11,18 @@ Number of file 0 mappings: 6
     = (c0 + c1)
 - Code(Counter(1)) at (prev + 0, 20) to (start + 1, 22)
 - Code(Counter(1)) at (prev + 7, 10) to (start + 2, 6)
-- Code(Expression(1, Sub)) at (prev + 3, 1) to (start + 0, 2)
-    = ((c0 + c1) - c1)
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: async_block::main::{closure#0}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 07, 1c, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 07, 03, 09, 00, 0a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 07, 1c, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 01, 03, 09, 00, 0a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 7, 28) to (start + 1, 23)
 - Code(Counter(1)) at (prev + 1, 24) to (start + 2, 14)
 - Code(Expression(0, Sub)) at (prev + 2, 20) to (start + 2, 14)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 9) to (start + 0, 10)
 
diff --git a/tests/coverage/branch/generics.cov-map b/tests/coverage/branch/generics.cov-map
index d729b0c260a..2e5668c8b56 100644
--- a/tests/coverage/branch/generics.cov-map
+++ b/tests/coverage/branch/generics.cov-map
@@ -1,10 +1,9 @@
 Function name: generics::print_size::<()>
-Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (33): 0x[01, 01, 01, 01, 05, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
 - Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
@@ -13,16 +12,14 @@ Number of file 0 mappings: 5
 - Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: generics::print_size::<u32>
-Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (33): 0x[01, 01, 01, 01, 05, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
 - Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
@@ -31,16 +28,14 @@ Number of file 0 mappings: 5
 - Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: generics::print_size::<u64>
-Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (33): 0x[01, 01, 01, 01, 05, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
 - Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
@@ -49,6 +44,5 @@ Number of file 0 mappings: 5
 - Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/branch/if-let.cov-map b/tests/coverage/branch/if-let.cov-map
index 0c7d986933e..0b098bc6497 100644
--- a/tests/coverage/branch/if-let.cov-map
+++ b/tests/coverage/branch/if-let.cov-map
@@ -1,10 +1,9 @@
 Function name: if_let::if_let
-Raw bytes (45): 0x[01, 01, 02, 05, 09, 09, 02, 07, 01, 0c, 01, 01, 10, 20, 02, 09, 03, 0c, 00, 13, 02, 00, 11, 00, 12, 05, 00, 16, 00, 1b, 02, 00, 1c, 02, 06, 09, 02, 0c, 02, 06, 07, 03, 05, 01, 02]
+Raw bytes (43): 0x[01, 01, 01, 05, 09, 07, 01, 0c, 01, 01, 10, 20, 02, 09, 03, 0c, 00, 13, 02, 00, 11, 00, 12, 05, 00, 16, 00, 1b, 02, 00, 1c, 02, 06, 09, 02, 0c, 02, 06, 05, 03, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
 Number of file 0 mappings: 7
 - Code(Counter(0)) at (prev + 12, 1) to (start + 1, 16)
 - Branch { true: Expression(0, Sub), false: Counter(2) } at (prev + 3, 12) to (start + 0, 19)
@@ -16,8 +15,7 @@ Number of file 0 mappings: 7
 - Code(Expression(0, Sub)) at (prev + 0, 28) to (start + 2, 6)
     = (c1 - c2)
 - Code(Counter(2)) at (prev + 2, 12) to (start + 2, 6)
-- Code(Expression(1, Add)) at (prev + 3, 5) to (start + 1, 2)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 3, 5) to (start + 1, 2)
 
 Function name: if_let::if_let_chain
 Raw bytes (66): 0x[01, 01, 04, 01, 05, 05, 09, 0f, 0d, 05, 09, 0a, 01, 17, 01, 00, 33, 20, 02, 05, 01, 0c, 00, 13, 02, 00, 11, 00, 12, 01, 00, 16, 00, 17, 20, 0d, 09, 01, 10, 00, 17, 0d, 00, 15, 00, 16, 02, 00, 1a, 00, 1b, 0d, 01, 05, 03, 06, 0f, 03, 0c, 02, 06, 0b, 03, 05, 01, 02]
diff --git a/tests/coverage/branch/if.cov-map b/tests/coverage/branch/if.cov-map
index 50f6216e069..7f4ee980e26 100644
--- a/tests/coverage/branch/if.cov-map
+++ b/tests/coverage/branch/if.cov-map
@@ -24,51 +24,17 @@ Number of file 0 mappings: 8
     = (c4 + (c3 + (c1 - c2)))
 
 Function name: if::branch_not
-Raw bytes (224): 0x[01, 01, 29, 05, 09, 09, 02, a3, 01, 0d, 09, 02, a3, 01, 0d, 09, 02, 0d, 9e, 01, a3, 01, 0d, 09, 02, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 15, 8e, 01, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 12, 01, 0c, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 09, 01, 09, 00, 11, 02, 01, 06, 00, 07, a3, 01, 01, 08, 00, 0a, 20, 9e, 01, 0d, 00, 08, 00, 0a, 9e, 01, 00, 0b, 02, 06, 0d, 02, 06, 00, 07, 9b, 01, 01, 08, 00, 0b, 20, 11, 96, 01, 00, 08, 00, 0b, 11, 00, 0c, 02, 06, 96, 01, 02, 06, 00, 07, 93, 01, 01, 08, 00, 0c, 20, 8e, 01, 15, 00, 08, 00, 0c, 8e, 01, 00, 0d, 02, 06, 15, 02, 06, 00, 07, 8b, 01, 01, 01, 00, 02]
+Raw bytes (116): 0x[01, 01, 07, 05, 09, 05, 0d, 05, 0d, 05, 11, 05, 11, 05, 15, 05, 15, 12, 01, 0c, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 09, 01, 09, 00, 11, 02, 01, 06, 00, 07, 05, 01, 08, 00, 0a, 20, 0a, 0d, 00, 08, 00, 0a, 0a, 00, 0b, 02, 06, 0d, 02, 06, 00, 07, 05, 01, 08, 00, 0b, 20, 11, 12, 00, 08, 00, 0b, 11, 00, 0c, 02, 06, 12, 02, 06, 00, 07, 05, 01, 08, 00, 0c, 20, 1a, 15, 00, 08, 00, 0c, 1a, 00, 0d, 02, 06, 15, 02, 06, 00, 07, 05, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 41
+Number of expressions: 7
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 5 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 6 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 7 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 8 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 9 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 10 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 11 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 13 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 14 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 15 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 16 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 17 operands: lhs = Counter(4), rhs = Expression(37, Sub)
-- expression 18 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 19 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 20 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 21 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 22 operands: lhs = Expression(36, Add), rhs = Counter(5)
-- expression 23 operands: lhs = Counter(4), rhs = Expression(37, Sub)
-- expression 24 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 25 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 26 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 27 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 28 operands: lhs = Expression(36, Add), rhs = Counter(5)
-- expression 29 operands: lhs = Counter(4), rhs = Expression(37, Sub)
-- expression 30 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 31 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 32 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 33 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 34 operands: lhs = Counter(5), rhs = Expression(35, Sub)
-- expression 35 operands: lhs = Expression(36, Add), rhs = Counter(5)
-- expression 36 operands: lhs = Counter(4), rhs = Expression(37, Sub)
-- expression 37 operands: lhs = Expression(38, Add), rhs = Counter(4)
-- expression 38 operands: lhs = Counter(3), rhs = Expression(39, Sub)
-- expression 39 operands: lhs = Expression(40, Add), rhs = Counter(3)
-- expression 40 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 2 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(1), rhs = Counter(4)
+- expression 4 operands: lhs = Counter(1), rhs = Counter(4)
+- expression 5 operands: lhs = Counter(1), rhs = Counter(5)
+- expression 6 operands: lhs = Counter(1), rhs = Counter(5)
 Number of file 0 mappings: 18
 - Code(Counter(0)) at (prev + 12, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 8) to (start + 0, 9)
@@ -78,60 +44,39 @@ Number of file 0 mappings: 18
 - Code(Counter(2)) at (prev + 1, 9) to (start + 0, 17)
 - Code(Expression(0, Sub)) at (prev + 1, 6) to (start + 0, 7)
     = (c1 - c2)
-- Code(Expression(40, Add)) at (prev + 1, 8) to (start + 0, 10)
-    = (c2 + (c1 - c2))
-- Branch { true: Expression(39, Sub), false: Counter(3) } at (prev + 0, 8) to (start + 0, 10)
-    true  = ((c2 + (c1 - c2)) - c3)
+- Code(Counter(1)) at (prev + 1, 8) to (start + 0, 10)
+- Branch { true: Expression(2, Sub), false: Counter(3) } at (prev + 0, 8) to (start + 0, 10)
+    true  = (c1 - c3)
     false = c3
-- Code(Expression(39, Sub)) at (prev + 0, 11) to (start + 2, 6)
-    = ((c2 + (c1 - c2)) - c3)
+- Code(Expression(2, Sub)) at (prev + 0, 11) to (start + 2, 6)
+    = (c1 - c3)
 - Code(Counter(3)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(38, Add)) at (prev + 1, 8) to (start + 0, 11)
-    = (c3 + ((c2 + (c1 - c2)) - c3))
-- Branch { true: Counter(4), false: Expression(37, Sub) } at (prev + 0, 8) to (start + 0, 11)
+- Code(Counter(1)) at (prev + 1, 8) to (start + 0, 11)
+- Branch { true: Counter(4), false: Expression(4, Sub) } at (prev + 0, 8) to (start + 0, 11)
     true  = c4
-    false = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
+    false = (c1 - c4)
 - Code(Counter(4)) at (prev + 0, 12) to (start + 2, 6)
-- Code(Expression(37, Sub)) at (prev + 2, 6) to (start + 0, 7)
-    = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
-- Code(Expression(36, Add)) at (prev + 1, 8) to (start + 0, 12)
-    = (c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4))
-- Branch { true: Expression(35, Sub), false: Counter(5) } at (prev + 0, 8) to (start + 0, 12)
-    true  = ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5)
+- Code(Expression(4, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c1 - c4)
+- Code(Counter(1)) at (prev + 1, 8) to (start + 0, 12)
+- Branch { true: Expression(6, Sub), false: Counter(5) } at (prev + 0, 8) to (start + 0, 12)
+    true  = (c1 - c5)
     false = c5
-- Code(Expression(35, Sub)) at (prev + 0, 13) to (start + 2, 6)
-    = ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5)
+- Code(Expression(6, Sub)) at (prev + 0, 13) to (start + 2, 6)
+    = (c1 - c5)
 - Code(Counter(5)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(34, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c5 + ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5))
+- Code(Counter(1)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: if::branch_not_as
-Raw bytes (124): 0x[01, 01, 16, 05, 09, 09, 02, 57, 0d, 09, 02, 57, 0d, 09, 02, 0d, 52, 57, 0d, 09, 02, 4f, 11, 0d, 52, 57, 0d, 09, 02, 4f, 11, 0d, 52, 57, 0d, 09, 02, 11, 4a, 4f, 11, 0d, 52, 57, 0d, 09, 02, 0e, 01, 1d, 01, 01, 10, 05, 03, 08, 00, 14, 20, 02, 09, 00, 08, 00, 14, 02, 00, 15, 02, 06, 09, 02, 06, 00, 07, 57, 01, 08, 00, 15, 20, 0d, 52, 00, 08, 00, 15, 0d, 00, 16, 02, 06, 52, 02, 06, 00, 07, 4f, 01, 08, 00, 16, 20, 4a, 11, 00, 08, 00, 16, 4a, 00, 17, 02, 06, 11, 02, 06, 00, 07, 47, 01, 01, 00, 02]
+Raw bytes (90): 0x[01, 01, 05, 05, 09, 05, 0d, 05, 0d, 05, 11, 05, 11, 0e, 01, 1d, 01, 01, 10, 05, 03, 08, 00, 14, 20, 02, 09, 00, 08, 00, 14, 02, 00, 15, 02, 06, 09, 02, 06, 00, 07, 05, 01, 08, 00, 15, 20, 0d, 0a, 00, 08, 00, 15, 0d, 00, 16, 02, 06, 0a, 02, 06, 00, 07, 05, 01, 08, 00, 16, 20, 12, 11, 00, 08, 00, 16, 12, 00, 17, 02, 06, 11, 02, 06, 00, 07, 05, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 22
+Number of expressions: 5
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 5 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 6 operands: lhs = Counter(3), rhs = Expression(20, Sub)
-- expression 7 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 8 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 9 operands: lhs = Expression(19, Add), rhs = Counter(4)
-- expression 10 operands: lhs = Counter(3), rhs = Expression(20, Sub)
-- expression 11 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 13 operands: lhs = Expression(19, Add), rhs = Counter(4)
-- expression 14 operands: lhs = Counter(3), rhs = Expression(20, Sub)
-- expression 15 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 16 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 17 operands: lhs = Counter(4), rhs = Expression(18, Sub)
-- expression 18 operands: lhs = Expression(19, Add), rhs = Counter(4)
-- expression 19 operands: lhs = Counter(3), rhs = Expression(20, Sub)
-- expression 20 operands: lhs = Expression(21, Add), rhs = Counter(3)
-- expression 21 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 2 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(1), rhs = Counter(4)
+- expression 4 operands: lhs = Counter(1), rhs = Counter(4)
 Number of file 0 mappings: 14
 - Code(Counter(0)) at (prev + 29, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 8) to (start + 0, 20)
@@ -141,24 +86,21 @@ Number of file 0 mappings: 14
 - Code(Expression(0, Sub)) at (prev + 0, 21) to (start + 2, 6)
     = (c1 - c2)
 - Code(Counter(2)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(21, Add)) at (prev + 1, 8) to (start + 0, 21)
-    = (c2 + (c1 - c2))
-- Branch { true: Counter(3), false: Expression(20, Sub) } at (prev + 0, 8) to (start + 0, 21)
+- Code(Counter(1)) at (prev + 1, 8) to (start + 0, 21)
+- Branch { true: Counter(3), false: Expression(2, Sub) } at (prev + 0, 8) to (start + 0, 21)
     true  = c3
-    false = ((c2 + (c1 - c2)) - c3)
+    false = (c1 - c3)
 - Code(Counter(3)) at (prev + 0, 22) to (start + 2, 6)
-- Code(Expression(20, Sub)) at (prev + 2, 6) to (start + 0, 7)
-    = ((c2 + (c1 - c2)) - c3)
-- Code(Expression(19, Add)) at (prev + 1, 8) to (start + 0, 22)
-    = (c3 + ((c2 + (c1 - c2)) - c3))
-- Branch { true: Expression(18, Sub), false: Counter(4) } at (prev + 0, 8) to (start + 0, 22)
-    true  = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
+- Code(Expression(2, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c1 - c3)
+- Code(Counter(1)) at (prev + 1, 8) to (start + 0, 22)
+- Branch { true: Expression(4, Sub), false: Counter(4) } at (prev + 0, 8) to (start + 0, 22)
+    true  = (c1 - c4)
     false = c4
-- Code(Expression(18, Sub)) at (prev + 0, 23) to (start + 2, 6)
-    = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
+- Code(Expression(4, Sub)) at (prev + 0, 23) to (start + 2, 6)
+    = (c1 - c4)
 - Code(Counter(4)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(17, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4))
+- Code(Counter(1)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: if::branch_or
 Raw bytes (56): 0x[01, 01, 04, 05, 09, 09, 0d, 0f, 11, 09, 0d, 08, 01, 35, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 02, 00, 0d, 00, 0e, 20, 0d, 11, 00, 0d, 00, 0e, 0f, 00, 0f, 02, 06, 11, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
diff --git a/tests/coverage/branch/lazy-boolean.cov-map b/tests/coverage/branch/lazy-boolean.cov-map
index e2d731022d7..09ce9137673 100644
--- a/tests/coverage/branch/lazy-boolean.cov-map
+++ b/tests/coverage/branch/lazy-boolean.cov-map
@@ -1,44 +1,35 @@
 Function name: lazy_boolean::branch_and
-Raw bytes (42): 0x[01, 01, 03, 09, 0a, 05, 09, 05, 09, 06, 01, 13, 01, 01, 10, 03, 04, 09, 00, 0a, 05, 00, 0d, 00, 0e, 20, 09, 0a, 00, 0d, 00, 0e, 09, 00, 12, 00, 13, 03, 01, 05, 01, 02]
+Raw bytes (38): 0x[01, 01, 01, 05, 09, 06, 01, 13, 01, 01, 10, 05, 04, 09, 00, 0a, 05, 00, 0d, 00, 0e, 20, 09, 02, 00, 0d, 00, 0e, 09, 00, 12, 00, 13, 05, 01, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
-- expression 0 operands: lhs = Counter(2), rhs = Expression(2, Sub)
-- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 2 operands: lhs = Counter(1), rhs = Counter(2)
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 19, 1) to (start + 1, 16)
-- Code(Expression(0, Add)) at (prev + 4, 9) to (start + 0, 10)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 4, 9) to (start + 0, 10)
 - Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
-- Branch { true: Counter(2), false: Expression(2, Sub) } at (prev + 0, 13) to (start + 0, 14)
+- Branch { true: Counter(2), false: Expression(0, Sub) } at (prev + 0, 13) to (start + 0, 14)
     true  = c2
     false = (c1 - c2)
 - Code(Counter(2)) at (prev + 0, 18) to (start + 0, 19)
-- Code(Expression(0, Add)) at (prev + 1, 5) to (start + 1, 2)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 1, 5) to (start + 1, 2)
 
 Function name: lazy_boolean::branch_or
-Raw bytes (44): 0x[01, 01, 04, 09, 0e, 05, 09, 05, 09, 05, 09, 06, 01, 1b, 01, 01, 10, 03, 04, 09, 00, 0a, 05, 00, 0d, 00, 0e, 20, 09, 0e, 00, 0d, 00, 0e, 0e, 00, 12, 00, 13, 03, 01, 05, 01, 02]
+Raw bytes (38): 0x[01, 01, 01, 05, 09, 06, 01, 1b, 01, 01, 10, 05, 04, 09, 00, 0a, 05, 00, 0d, 00, 0e, 20, 09, 02, 00, 0d, 00, 0e, 02, 00, 12, 00, 13, 05, 01, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 4
-- expression 0 operands: lhs = Counter(2), rhs = Expression(3, Sub)
-- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 2 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 3 operands: lhs = Counter(1), rhs = Counter(2)
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 27, 1) to (start + 1, 16)
-- Code(Expression(0, Add)) at (prev + 4, 9) to (start + 0, 10)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 4, 9) to (start + 0, 10)
 - Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
-- Branch { true: Counter(2), false: Expression(3, Sub) } at (prev + 0, 13) to (start + 0, 14)
+- Branch { true: Counter(2), false: Expression(0, Sub) } at (prev + 0, 13) to (start + 0, 14)
     true  = c2
     false = (c1 - c2)
-- Code(Expression(3, Sub)) at (prev + 0, 18) to (start + 0, 19)
+- Code(Expression(0, Sub)) at (prev + 0, 18) to (start + 0, 19)
     = (c1 - c2)
-- Code(Expression(0, Add)) at (prev + 1, 5) to (start + 1, 2)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 1, 5) to (start + 1, 2)
 
 Function name: lazy_boolean::chain
 Raw bytes (149): 0x[01, 01, 13, 11, 07, 0b, 16, 15, 1a, 09, 0d, 05, 09, 05, 09, 09, 0d, 47, 25, 4b, 21, 19, 1d, 03, 19, 03, 19, 3e, 1d, 03, 19, 3e, 1d, 03, 19, 47, 25, 4b, 21, 19, 1d, 13, 01, 24, 01, 01, 10, 03, 04, 09, 00, 0a, 05, 00, 0d, 00, 12, 20, 09, 16, 00, 0d, 00, 12, 09, 00, 16, 00, 1b, 20, 0d, 1a, 00, 16, 00, 1b, 0d, 00, 1f, 00, 24, 20, 11, 15, 00, 1f, 00, 24, 11, 00, 28, 00, 2d, 03, 01, 05, 00, 11, 43, 03, 09, 00, 0a, 03, 00, 0d, 00, 12, 20, 19, 3e, 00, 0d, 00, 12, 3e, 00, 16, 00, 1b, 20, 1d, 3a, 00, 16, 00, 1b, 3a, 00, 1f, 00, 24, 20, 21, 25, 00, 1f, 00, 24, 25, 00, 28, 00, 2d, 43, 01, 05, 01, 02]
@@ -105,73 +96,71 @@ Number of file 0 mappings: 19
     = (((c6 + c7) + c8) + c9)
 
 Function name: lazy_boolean::nested_mixed
-Raw bytes (159): 0x[01, 01, 18, 07, 22, 11, 36, 3b, 11, 09, 0d, 26, 0d, 05, 09, 05, 09, 05, 09, 26, 0d, 05, 09, 09, 0d, 3b, 11, 09, 0d, 3b, 11, 09, 0d, 19, 5f, 1d, 21, 03, 15, 15, 19, 52, 56, 15, 19, 03, 15, 19, 5f, 1d, 21, 13, 01, 31, 01, 01, 10, 03, 04, 09, 00, 0a, 05, 00, 0e, 00, 13, 20, 09, 26, 00, 0e, 00, 13, 26, 00, 17, 00, 1d, 20, 0d, 22, 00, 17, 00, 1d, 3b, 00, 23, 00, 28, 20, 11, 36, 00, 23, 00, 28, 36, 00, 2c, 00, 33, 03, 01, 05, 00, 11, 5b, 03, 09, 00, 0a, 03, 00, 0e, 00, 13, 20, 15, 56, 00, 0e, 00, 13, 15, 00, 17, 00, 1c, 20, 19, 52, 00, 17, 00, 1c, 4f, 00, 22, 00, 28, 20, 1d, 21, 00, 22, 00, 28, 1d, 00, 2c, 00, 33, 5b, 01, 05, 01, 02]
+Raw bytes (155): 0x[01, 01, 16, 33, 1a, 09, 0d, 1e, 0d, 05, 09, 05, 09, 05, 09, 1e, 0d, 05, 09, 09, 0d, 33, 11, 09, 0d, 33, 11, 09, 0d, 19, 57, 1d, 21, 03, 15, 15, 19, 4a, 4e, 15, 19, 03, 15, 19, 57, 1d, 21, 13, 01, 31, 01, 01, 10, 03, 04, 09, 00, 0a, 05, 00, 0e, 00, 13, 20, 09, 1e, 00, 0e, 00, 13, 1e, 00, 17, 00, 1d, 20, 0d, 1a, 00, 17, 00, 1d, 33, 00, 23, 00, 28, 20, 11, 2e, 00, 23, 00, 28, 2e, 00, 2c, 00, 33, 03, 01, 05, 00, 11, 53, 03, 09, 00, 0a, 03, 00, 0e, 00, 13, 20, 15, 4e, 00, 0e, 00, 13, 15, 00, 17, 00, 1c, 20, 19, 4a, 00, 17, 00, 1c, 47, 00, 22, 00, 28, 20, 1d, 21, 00, 22, 00, 28, 1d, 00, 2c, 00, 33, 53, 01, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 24
-- expression 0 operands: lhs = Expression(1, Add), rhs = Expression(8, Sub)
-- expression 1 operands: lhs = Counter(4), rhs = Expression(13, Sub)
-- expression 2 operands: lhs = Expression(14, Add), rhs = Counter(4)
-- expression 3 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 4 operands: lhs = Expression(9, Sub), rhs = Counter(3)
+Number of expressions: 22
+- expression 0 operands: lhs = Expression(12, Add), rhs = Expression(6, Sub)
+- expression 1 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 2 operands: lhs = Expression(7, Sub), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 4 operands: lhs = Counter(1), rhs = Counter(2)
 - expression 5 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 6 operands: lhs = Expression(7, Sub), rhs = Counter(3)
 - expression 7 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 8 operands: lhs = Expression(9, Sub), rhs = Counter(3)
-- expression 9 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 8 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 9 operands: lhs = Expression(12, Add), rhs = Counter(4)
 - expression 10 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 11 operands: lhs = Expression(14, Add), rhs = Counter(4)
+- expression 11 operands: lhs = Expression(12, Add), rhs = Counter(4)
 - expression 12 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 13 operands: lhs = Expression(14, Add), rhs = Counter(4)
-- expression 14 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 15 operands: lhs = Counter(6), rhs = Expression(23, Add)
-- expression 16 operands: lhs = Counter(7), rhs = Counter(8)
-- expression 17 operands: lhs = Expression(0, Add), rhs = Counter(5)
+- expression 13 operands: lhs = Counter(6), rhs = Expression(21, Add)
+- expression 14 operands: lhs = Counter(7), rhs = Counter(8)
+- expression 15 operands: lhs = Expression(0, Add), rhs = Counter(5)
+- expression 16 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 17 operands: lhs = Expression(18, Sub), rhs = Expression(19, Sub)
 - expression 18 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 19 operands: lhs = Expression(20, Sub), rhs = Expression(21, Sub)
-- expression 20 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 21 operands: lhs = Expression(0, Add), rhs = Counter(5)
-- expression 22 operands: lhs = Counter(6), rhs = Expression(23, Add)
-- expression 23 operands: lhs = Counter(7), rhs = Counter(8)
+- expression 19 operands: lhs = Expression(0, Add), rhs = Counter(5)
+- expression 20 operands: lhs = Counter(6), rhs = Expression(21, Add)
+- expression 21 operands: lhs = Counter(7), rhs = Counter(8)
 Number of file 0 mappings: 19
 - Code(Counter(0)) at (prev + 49, 1) to (start + 1, 16)
 - Code(Expression(0, Add)) at (prev + 4, 9) to (start + 0, 10)
-    = ((c4 + ((c2 + c3) - c4)) + ((c1 - c2) - c3))
+    = ((c2 + c3) + ((c1 - c2) - c3))
 - Code(Counter(1)) at (prev + 0, 14) to (start + 0, 19)
-- Branch { true: Counter(2), false: Expression(9, Sub) } at (prev + 0, 14) to (start + 0, 19)
+- Branch { true: Counter(2), false: Expression(7, Sub) } at (prev + 0, 14) to (start + 0, 19)
     true  = c2
     false = (c1 - c2)
-- Code(Expression(9, Sub)) at (prev + 0, 23) to (start + 0, 29)
+- Code(Expression(7, Sub)) at (prev + 0, 23) to (start + 0, 29)
     = (c1 - c2)
-- Branch { true: Counter(3), false: Expression(8, Sub) } at (prev + 0, 23) to (start + 0, 29)
+- Branch { true: Counter(3), false: Expression(6, Sub) } at (prev + 0, 23) to (start + 0, 29)
     true  = c3
     false = ((c1 - c2) - c3)
-- Code(Expression(14, Add)) at (prev + 0, 35) to (start + 0, 40)
+- Code(Expression(12, Add)) at (prev + 0, 35) to (start + 0, 40)
     = (c2 + c3)
-- Branch { true: Counter(4), false: Expression(13, Sub) } at (prev + 0, 35) to (start + 0, 40)
+- Branch { true: Counter(4), false: Expression(11, Sub) } at (prev + 0, 35) to (start + 0, 40)
     true  = c4
     false = ((c2 + c3) - c4)
-- Code(Expression(13, Sub)) at (prev + 0, 44) to (start + 0, 51)
+- Code(Expression(11, Sub)) at (prev + 0, 44) to (start + 0, 51)
     = ((c2 + c3) - c4)
 - Code(Expression(0, Add)) at (prev + 1, 5) to (start + 0, 17)
-    = ((c4 + ((c2 + c3) - c4)) + ((c1 - c2) - c3))
-- Code(Expression(22, Add)) at (prev + 3, 9) to (start + 0, 10)
+    = ((c2 + c3) + ((c1 - c2) - c3))
+- Code(Expression(20, Add)) at (prev + 3, 9) to (start + 0, 10)
     = (c6 + (c7 + c8))
 - Code(Expression(0, Add)) at (prev + 0, 14) to (start + 0, 19)
-    = ((c4 + ((c2 + c3) - c4)) + ((c1 - c2) - c3))
-- Branch { true: Counter(5), false: Expression(21, Sub) } at (prev + 0, 14) to (start + 0, 19)
+    = ((c2 + c3) + ((c1 - c2) - c3))
+- Branch { true: Counter(5), false: Expression(19, Sub) } at (prev + 0, 14) to (start + 0, 19)
     true  = c5
-    false = (((c4 + ((c2 + c3) - c4)) + ((c1 - c2) - c3)) - c5)
+    false = (((c2 + c3) + ((c1 - c2) - c3)) - c5)
 - Code(Counter(5)) at (prev + 0, 23) to (start + 0, 28)
-- Branch { true: Counter(6), false: Expression(20, Sub) } at (prev + 0, 23) to (start + 0, 28)
+- Branch { true: Counter(6), false: Expression(18, Sub) } at (prev + 0, 23) to (start + 0, 28)
     true  = c6
     false = (c5 - c6)
-- Code(Expression(19, Add)) at (prev + 0, 34) to (start + 0, 40)
-    = ((c5 - c6) + (((c4 + ((c2 + c3) - c4)) + ((c1 - c2) - c3)) - c5))
+- Code(Expression(17, Add)) at (prev + 0, 34) to (start + 0, 40)
+    = ((c5 - c6) + (((c2 + c3) + ((c1 - c2) - c3)) - c5))
 - Branch { true: Counter(7), false: Counter(8) } at (prev + 0, 34) to (start + 0, 40)
     true  = c7
     false = c8
 - Code(Counter(7)) at (prev + 0, 44) to (start + 0, 51)
-- Code(Expression(22, Add)) at (prev + 1, 5) to (start + 1, 2)
+- Code(Expression(20, Add)) at (prev + 1, 5) to (start + 1, 2)
     = (c6 + (c7 + c8))
 
diff --git a/tests/coverage/branch/let-else.cov-map b/tests/coverage/branch/let-else.cov-map
index c7f7adddbc2..07079934464 100644
--- a/tests/coverage/branch/let-else.cov-map
+++ b/tests/coverage/branch/let-else.cov-map
@@ -1,10 +1,9 @@
 Function name: let_else::let_else
-Raw bytes (45): 0x[01, 01, 02, 05, 09, 09, 02, 07, 01, 0c, 01, 01, 10, 20, 02, 09, 03, 09, 00, 10, 02, 00, 0e, 00, 0f, 05, 00, 13, 00, 18, 09, 01, 09, 01, 0f, 02, 04, 05, 00, 0b, 07, 01, 01, 00, 02]
+Raw bytes (43): 0x[01, 01, 01, 05, 09, 07, 01, 0c, 01, 01, 10, 20, 02, 09, 03, 09, 00, 10, 02, 00, 0e, 00, 0f, 05, 00, 13, 00, 18, 09, 01, 09, 01, 0f, 02, 04, 05, 00, 0b, 05, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
 Number of file 0 mappings: 7
 - Code(Counter(0)) at (prev + 12, 1) to (start + 1, 16)
 - Branch { true: Expression(0, Sub), false: Counter(2) } at (prev + 3, 9) to (start + 0, 16)
@@ -16,6 +15,5 @@ Number of file 0 mappings: 7
 - Code(Counter(2)) at (prev + 1, 9) to (start + 1, 15)
 - Code(Expression(0, Sub)) at (prev + 4, 5) to (start + 0, 11)
     = (c1 - c2)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c2 + (c1 - c2))
+- Code(Counter(1)) at (prev + 1, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/branch/while.cov-map b/tests/coverage/branch/while.cov-map
index 5a3ef096bed..fd05bbb69a5 100644
--- a/tests/coverage/branch/while.cov-map
+++ b/tests/coverage/branch/while.cov-map
@@ -1,42 +1,36 @@
 Function name: while::while_cond
-Raw bytes (42): 0x[01, 01, 03, 05, 09, 03, 09, 03, 09, 06, 01, 0c, 01, 01, 10, 05, 03, 09, 00, 12, 03, 01, 0b, 00, 10, 20, 09, 0a, 00, 0b, 00, 10, 09, 00, 11, 02, 06, 0a, 03, 01, 00, 02]
+Raw bytes (38): 0x[01, 01, 01, 05, 09, 06, 01, 0c, 01, 01, 10, 05, 03, 09, 00, 12, 03, 01, 0b, 00, 10, 20, 09, 05, 00, 0b, 00, 10, 09, 00, 11, 02, 06, 05, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(2)
-- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(2)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 12, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 9) to (start + 0, 18)
 - Code(Expression(0, Add)) at (prev + 1, 11) to (start + 0, 16)
     = (c1 + c2)
-- Branch { true: Counter(2), false: Expression(2, Sub) } at (prev + 0, 11) to (start + 0, 16)
+- Branch { true: Counter(2), false: Counter(1) } at (prev + 0, 11) to (start + 0, 16)
     true  = c2
-    false = ((c1 + c2) - c2)
+    false = c1
 - Code(Counter(2)) at (prev + 0, 17) to (start + 2, 6)
-- Code(Expression(2, Sub)) at (prev + 3, 1) to (start + 0, 2)
-    = ((c1 + c2) - c2)
+- Code(Counter(1)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: while::while_cond_not
-Raw bytes (42): 0x[01, 01, 03, 05, 09, 03, 09, 03, 09, 06, 01, 15, 01, 01, 10, 05, 03, 09, 00, 12, 03, 01, 0b, 00, 14, 20, 09, 0a, 00, 0b, 00, 14, 09, 00, 15, 02, 06, 0a, 03, 01, 00, 02]
+Raw bytes (38): 0x[01, 01, 01, 05, 09, 06, 01, 15, 01, 01, 10, 05, 03, 09, 00, 12, 03, 01, 0b, 00, 14, 20, 09, 05, 00, 0b, 00, 14, 09, 00, 15, 02, 06, 05, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(2)
-- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(2)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 21, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 9) to (start + 0, 18)
 - Code(Expression(0, Add)) at (prev + 1, 11) to (start + 0, 20)
     = (c1 + c2)
-- Branch { true: Counter(2), false: Expression(2, Sub) } at (prev + 0, 11) to (start + 0, 20)
+- Branch { true: Counter(2), false: Counter(1) } at (prev + 0, 11) to (start + 0, 20)
     true  = c2
-    false = ((c1 + c2) - c2)
+    false = c1
 - Code(Counter(2)) at (prev + 0, 21) to (start + 2, 6)
-- Code(Expression(2, Sub)) at (prev + 3, 1) to (start + 0, 2)
-    = ((c1 + c2) - c2)
+- Code(Counter(1)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: while::while_op_and
 Raw bytes (56): 0x[01, 01, 04, 05, 09, 03, 0d, 03, 0d, 11, 0d, 08, 01, 1e, 01, 01, 10, 05, 03, 09, 01, 12, 03, 02, 0b, 00, 10, 20, 0a, 0d, 00, 0b, 00, 10, 0a, 00, 14, 00, 19, 20, 09, 11, 00, 14, 00, 19, 09, 00, 1a, 03, 06, 0f, 04, 01, 00, 02]
diff --git a/tests/coverage/closure.cov-map b/tests/coverage/closure.cov-map
index 9f0d33745bc..f36ef7af7ac 100644
--- a/tests/coverage/closure.cov-map
+++ b/tests/coverage/closure.cov-map
@@ -1,10 +1,9 @@
 Function name: closure::main
-Raw bytes (128): 0x[01, 01, 02, 01, 05, 05, 02, 18, 01, 09, 01, 0f, 0d, 01, 16, 0e, 06, 0a, 01, 10, 05, 13, 0d, 01, 1a, 0e, 06, 0a, 01, 10, 05, 0c, 16, 01, 16, 05, 0d, 18, 01, 19, 09, 01, 1e, 01, 04, 09, 00, 29, 01, 01, 09, 00, 2d, 01, 01, 09, 00, 24, 01, 05, 09, 00, 24, 01, 02, 09, 00, 21, 01, 04, 09, 00, 21, 01, 04, 09, 00, 28, 01, 09, 09, 00, 32, 01, 04, 09, 00, 33, 01, 07, 09, 00, 4b, 01, 08, 09, 00, 48, 01, 0a, 09, 00, 47, 01, 08, 09, 00, 44, 01, 0a, 08, 00, 10, 05, 00, 11, 04, 06, 02, 04, 06, 00, 07, 07, 01, 05, 03, 02]
+Raw bytes (126): 0x[01, 01, 01, 01, 05, 18, 01, 09, 01, 0f, 0d, 01, 16, 0e, 06, 0a, 01, 10, 05, 13, 0d, 01, 1a, 0e, 06, 0a, 01, 10, 05, 0c, 16, 01, 16, 05, 0d, 18, 01, 19, 09, 01, 1e, 01, 04, 09, 00, 29, 01, 01, 09, 00, 2d, 01, 01, 09, 00, 24, 01, 05, 09, 00, 24, 01, 02, 09, 00, 21, 01, 04, 09, 00, 21, 01, 04, 09, 00, 28, 01, 09, 09, 00, 32, 01, 04, 09, 00, 33, 01, 07, 09, 00, 4b, 01, 08, 09, 00, 48, 01, 0a, 09, 00, 47, 01, 08, 09, 00, 44, 01, 0a, 08, 00, 10, 05, 00, 11, 04, 06, 02, 04, 06, 00, 07, 01, 01, 05, 03, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 24
 - Code(Counter(0)) at (prev + 9, 1) to (start + 15, 13)
 - Code(Counter(0)) at (prev + 22, 14) to (start + 6, 10)
@@ -30,8 +29,7 @@ Number of file 0 mappings: 24
 - Code(Counter(1)) at (prev + 0, 17) to (start + 4, 6)
 - Code(Expression(0, Sub)) at (prev + 4, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 3, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 3, 2)
 
 Function name: closure::main::{closure#0} (unused)
 Raw bytes (24): 0x[01, 01, 00, 04, 00, 28, 05, 02, 14, 00, 02, 15, 02, 0a, 00, 02, 0a, 00, 0b, 00, 01, 09, 01, 06]
@@ -77,72 +75,60 @@ Number of file 0 mappings: 1
 - Code(Zero) at (prev + 172, 13) to (start + 2, 14)
 
 Function name: closure::main::{closure#14}
-Raw bytes (29): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, b3, 01, 0d, 02, 1b, 05, 02, 1e, 00, 25, 02, 00, 2f, 00, 33, 07, 01, 0d, 00, 0e]
+Raw bytes (27): 0x[01, 01, 01, 01, 05, 04, 01, b3, 01, 0d, 02, 1b, 05, 02, 1e, 00, 25, 02, 00, 2f, 00, 33, 01, 01, 0d, 00, 0e]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 179, 13) to (start + 2, 27)
 - Code(Counter(1)) at (prev + 2, 30) to (start + 0, 37)
 - Code(Expression(0, Sub)) at (prev + 0, 47) to (start + 0, 51)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 13) to (start + 0, 14)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 13) to (start + 0, 14)
 
 Function name: closure::main::{closure#15}
-Raw bytes (41): 0x[01, 01, 03, 05, 0a, 01, 05, 01, 05, 06, 01, bb, 01, 09, 00, 0a, 03, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0a, 00, 2f, 00, 33, 03, 02, 09, 00, 0a]
+Raw bytes (37): 0x[01, 01, 01, 01, 05, 06, 01, bb, 01, 09, 00, 0a, 01, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 02, 00, 2f, 00, 33, 01, 02, 09, 00, 0a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
-- expression 0 operands: lhs = Counter(1), rhs = Expression(2, Sub)
-- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 187, 9) to (start + 0, 10)
-- Code(Expression(0, Add)) at (prev + 1, 13) to (start + 0, 21)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 13) to (start + 0, 21)
 - Code(Counter(0)) at (prev + 1, 17) to (start + 1, 27)
 - Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
-- Code(Expression(2, Sub)) at (prev + 0, 47) to (start + 0, 51)
+- Code(Expression(0, Sub)) at (prev + 0, 47) to (start + 0, 51)
     = (c0 - c1)
-- Code(Expression(0, Add)) at (prev + 2, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 10)
 
 Function name: closure::main::{closure#16}
-Raw bytes (29): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, c5, 01, 0d, 02, 1b, 05, 02, 1e, 00, 25, 02, 00, 2f, 00, 33, 07, 01, 0d, 00, 0e]
+Raw bytes (27): 0x[01, 01, 01, 01, 05, 04, 01, c5, 01, 0d, 02, 1b, 05, 02, 1e, 00, 25, 02, 00, 2f, 00, 33, 01, 01, 0d, 00, 0e]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 197, 13) to (start + 2, 27)
 - Code(Counter(1)) at (prev + 2, 30) to (start + 0, 37)
 - Code(Expression(0, Sub)) at (prev + 0, 47) to (start + 0, 51)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 13) to (start + 0, 14)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 13) to (start + 0, 14)
 
 Function name: closure::main::{closure#17}
-Raw bytes (41): 0x[01, 01, 03, 05, 0a, 01, 05, 01, 05, 06, 01, cd, 01, 09, 00, 0a, 03, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0a, 00, 2f, 00, 33, 03, 02, 09, 00, 0a]
+Raw bytes (37): 0x[01, 01, 01, 01, 05, 06, 01, cd, 01, 09, 00, 0a, 01, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 02, 00, 2f, 00, 33, 01, 02, 09, 00, 0a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
-- expression 0 operands: lhs = Counter(1), rhs = Expression(2, Sub)
-- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 205, 9) to (start + 0, 10)
-- Code(Expression(0, Add)) at (prev + 1, 13) to (start + 0, 21)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 13) to (start + 0, 21)
 - Code(Counter(0)) at (prev + 1, 17) to (start + 1, 27)
 - Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
-- Code(Expression(2, Sub)) at (prev + 0, 47) to (start + 0, 51)
+- Code(Expression(0, Sub)) at (prev + 0, 47) to (start + 0, 51)
     = (c0 - c1)
-- Code(Expression(0, Add)) at (prev + 2, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 10)
 
 Function name: closure::main::{closure#18} (unused)
 Raw bytes (24): 0x[01, 01, 00, 04, 00, 19, 0d, 02, 1c, 00, 02, 1d, 02, 12, 00, 02, 12, 00, 13, 00, 01, 11, 01, 0e]
@@ -156,49 +142,43 @@ Number of file 0 mappings: 4
 - Code(Zero) at (prev + 1, 17) to (start + 1, 14)
 
 Function name: closure::main::{closure#19}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 43, 0d, 02, 1c, 05, 02, 1d, 02, 12, 02, 02, 12, 00, 13, 07, 01, 11, 01, 0e]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 43, 0d, 02, 1c, 05, 02, 1d, 02, 12, 02, 02, 12, 00, 13, 01, 01, 11, 01, 0e]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 67, 13) to (start + 2, 28)
 - Code(Counter(1)) at (prev + 2, 29) to (start + 2, 18)
 - Code(Expression(0, Sub)) at (prev + 2, 18) to (start + 0, 19)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 17) to (start + 1, 14)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 17) to (start + 1, 14)
 
 Function name: closure::main::{closure#1}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 52, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 07, 01, 09, 01, 06]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 52, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 01, 01, 09, 01, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 82, 5) to (start + 2, 20)
 - Code(Counter(1)) at (prev + 2, 21) to (start + 2, 10)
 - Code(Expression(0, Sub)) at (prev + 2, 10) to (start + 0, 11)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 1, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 9) to (start + 1, 6)
 
 Function name: closure::main::{closure#2}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 68, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 07, 01, 09, 01, 06]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 68, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 01, 01, 09, 01, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 104, 5) to (start + 2, 20)
 - Code(Counter(1)) at (prev + 2, 21) to (start + 2, 10)
 - Code(Expression(0, Sub)) at (prev + 2, 10) to (start + 0, 11)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 1, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 9) to (start + 1, 6)
 
 Function name: closure::main::{closure#3} (unused)
 Raw bytes (25): 0x[01, 01, 00, 04, 00, 81, 01, 05, 01, 14, 00, 01, 15, 02, 0a, 00, 02, 0a, 00, 0b, 00, 01, 09, 01, 06]
diff --git a/tests/coverage/closure_bug.cov-map b/tests/coverage/closure_bug.cov-map
index 160b348bd63..32e8db5fb2f 100644
--- a/tests/coverage/closure_bug.cov-map
+++ b/tests/coverage/closure_bug.cov-map
@@ -1,133 +1,84 @@
 Function name: closure_bug::main
-Raw bytes (201): 0x[01, 01, 26, 01, 05, 05, 02, 05, 02, 97, 01, 09, 05, 02, 09, 92, 01, 97, 01, 09, 05, 02, 09, 92, 01, 97, 01, 09, 05, 02, 8f, 01, 0d, 09, 92, 01, 97, 01, 09, 05, 02, 0d, 8a, 01, 8f, 01, 0d, 09, 92, 01, 97, 01, 09, 05, 02, 0d, 8a, 01, 8f, 01, 0d, 09, 92, 01, 97, 01, 09, 05, 02, 87, 01, 11, 0d, 8a, 01, 8f, 01, 0d, 09, 92, 01, 97, 01, 09, 05, 02, 11, 82, 01, 87, 01, 11, 0d, 8a, 01, 8f, 01, 0d, 09, 92, 01, 97, 01, 09, 05, 02, 11, 01, 07, 01, 03, 0a, 01, 09, 05, 01, 0e, 05, 01, 0f, 00, 17, 02, 00, 17, 00, 18, 97, 01, 02, 09, 00, 0a, 97, 01, 06, 05, 01, 0e, 09, 01, 0f, 00, 17, 92, 01, 00, 17, 00, 18, 8f, 01, 02, 09, 00, 0a, 8f, 01, 06, 05, 01, 0e, 0d, 01, 0f, 00, 17, 8a, 01, 00, 17, 00, 18, 87, 01, 02, 09, 00, 0a, 87, 01, 06, 05, 01, 0e, 11, 01, 0f, 00, 17, 82, 01, 00, 17, 00, 18, 7f, 01, 01, 00, 02]
+Raw bytes (97): 0x[01, 01, 04, 01, 05, 01, 09, 01, 0d, 01, 11, 11, 01, 07, 01, 03, 0a, 01, 09, 05, 01, 0e, 05, 01, 0f, 00, 17, 02, 00, 17, 00, 18, 01, 02, 09, 00, 0a, 01, 06, 05, 01, 0e, 09, 01, 0f, 00, 17, 06, 00, 17, 00, 18, 01, 02, 09, 00, 0a, 01, 06, 05, 01, 0e, 0d, 01, 0f, 00, 17, 0a, 00, 17, 00, 18, 01, 02, 09, 00, 0a, 01, 06, 05, 01, 0e, 11, 01, 0f, 00, 17, 0e, 00, 17, 00, 18, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 38
+Number of expressions: 4
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 3 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 4 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 5 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 6 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 7 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 8 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 9 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 10 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 11 operands: lhs = Expression(35, Add), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 13 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 14 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 15 operands: lhs = Counter(3), rhs = Expression(34, Sub)
-- expression 16 operands: lhs = Expression(35, Add), rhs = Counter(3)
-- expression 17 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 18 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 19 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 20 operands: lhs = Counter(3), rhs = Expression(34, Sub)
-- expression 21 operands: lhs = Expression(35, Add), rhs = Counter(3)
-- expression 22 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 23 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 24 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 25 operands: lhs = Expression(33, Add), rhs = Counter(4)
-- expression 26 operands: lhs = Counter(3), rhs = Expression(34, Sub)
-- expression 27 operands: lhs = Expression(35, Add), rhs = Counter(3)
-- expression 28 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 29 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 30 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 31 operands: lhs = Counter(4), rhs = Expression(32, Sub)
-- expression 32 operands: lhs = Expression(33, Add), rhs = Counter(4)
-- expression 33 operands: lhs = Counter(3), rhs = Expression(34, Sub)
-- expression 34 operands: lhs = Expression(35, Add), rhs = Counter(3)
-- expression 35 operands: lhs = Counter(2), rhs = Expression(36, Sub)
-- expression 36 operands: lhs = Expression(37, Add), rhs = Counter(2)
-- expression 37 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(0), rhs = Counter(4)
 Number of file 0 mappings: 17
 - Code(Counter(0)) at (prev + 7, 1) to (start + 3, 10)
 - Code(Counter(0)) at (prev + 9, 5) to (start + 1, 14)
 - Code(Counter(1)) at (prev + 1, 15) to (start + 0, 23)
 - Code(Expression(0, Sub)) at (prev + 0, 23) to (start + 0, 24)
     = (c0 - c1)
-- Code(Expression(37, Add)) at (prev + 2, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
-- Code(Expression(37, Add)) at (prev + 6, 5) to (start + 1, 14)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 10)
+- Code(Counter(0)) at (prev + 6, 5) to (start + 1, 14)
 - Code(Counter(2)) at (prev + 1, 15) to (start + 0, 23)
-- Code(Expression(36, Sub)) at (prev + 0, 23) to (start + 0, 24)
-    = ((c1 + (c0 - c1)) - c2)
-- Code(Expression(35, Add)) at (prev + 2, 9) to (start + 0, 10)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
-- Code(Expression(35, Add)) at (prev + 6, 5) to (start + 1, 14)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Expression(1, Sub)) at (prev + 0, 23) to (start + 0, 24)
+    = (c0 - c2)
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 10)
+- Code(Counter(0)) at (prev + 6, 5) to (start + 1, 14)
 - Code(Counter(3)) at (prev + 1, 15) to (start + 0, 23)
-- Code(Expression(34, Sub)) at (prev + 0, 23) to (start + 0, 24)
-    = ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)
-- Code(Expression(33, Add)) at (prev + 2, 9) to (start + 0, 10)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
-- Code(Expression(33, Add)) at (prev + 6, 5) to (start + 1, 14)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Expression(2, Sub)) at (prev + 0, 23) to (start + 0, 24)
+    = (c0 - c3)
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 10)
+- Code(Counter(0)) at (prev + 6, 5) to (start + 1, 14)
 - Code(Counter(4)) at (prev + 1, 15) to (start + 0, 23)
-- Code(Expression(32, Sub)) at (prev + 0, 23) to (start + 0, 24)
-    = ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)
-- Code(Expression(31, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
+- Code(Expression(3, Sub)) at (prev + 0, 23) to (start + 0, 24)
+    = (c0 - c4)
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: closure_bug::main::{closure#0}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 0e, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 07, 00, 29, 00, 2a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 0e, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 01, 00, 29, 00, 2a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 14, 9) to (start + 0, 18)
 - Code(Counter(1)) at (prev + 0, 21) to (start + 0, 25)
 - Code(Expression(0, Sub)) at (prev + 0, 35) to (start + 0, 40)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 0, 41) to (start + 0, 42)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 0, 41) to (start + 0, 42)
 
 Function name: closure_bug::main::{closure#1}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 17, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 07, 00, 29, 00, 2a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 17, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 01, 00, 29, 00, 2a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 23, 9) to (start + 0, 18)
 - Code(Counter(1)) at (prev + 0, 21) to (start + 0, 25)
 - Code(Expression(0, Sub)) at (prev + 0, 35) to (start + 0, 40)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 0, 41) to (start + 0, 42)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 0, 41) to (start + 0, 42)
 
 Function name: closure_bug::main::{closure#2}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 20, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 07, 00, 29, 00, 2a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 20, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 01, 00, 29, 00, 2a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 32, 9) to (start + 0, 18)
 - Code(Counter(1)) at (prev + 0, 21) to (start + 0, 25)
 - Code(Expression(0, Sub)) at (prev + 0, 35) to (start + 0, 40)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 0, 41) to (start + 0, 42)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 0, 41) to (start + 0, 42)
 
 Function name: closure_bug::main::{closure#3}
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 29, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 07, 00, 29, 00, 2a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 29, 09, 00, 12, 05, 00, 15, 00, 19, 02, 00, 23, 00, 28, 01, 00, 29, 00, 2a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 41, 9) to (start + 0, 18)
 - Code(Counter(1)) at (prev + 0, 21) to (start + 0, 25)
 - Code(Expression(0, Sub)) at (prev + 0, 35) to (start + 0, 40)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 0, 41) to (start + 0, 42)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 0, 41) to (start + 0, 42)
 
diff --git a/tests/coverage/closure_macro.cov-map b/tests/coverage/closure_macro.cov-map
index e43ed1f76f3..fd8fbd9fa75 100644
--- a/tests/coverage/closure_macro.cov-map
+++ b/tests/coverage/closure_macro.cov-map
@@ -7,12 +7,11 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 29, 1) to (start + 2, 2)
 
 Function name: closure_macro::main
-Raw bytes (38): 0x[01, 01, 02, 01, 05, 05, 02, 06, 01, 21, 01, 01, 21, 02, 02, 09, 00, 12, 02, 00, 0f, 00, 54, 05, 00, 54, 00, 55, 02, 02, 09, 02, 0b, 07, 03, 01, 00, 02]
+Raw bytes (36): 0x[01, 01, 01, 01, 05, 06, 01, 21, 01, 01, 21, 02, 02, 09, 00, 12, 02, 00, 0f, 00, 54, 05, 00, 54, 00, 55, 02, 02, 09, 02, 0b, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 33, 1) to (start + 1, 33)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 18)
@@ -22,8 +21,7 @@ Number of file 0 mappings: 6
 - Code(Counter(1)) at (prev + 0, 84) to (start + 0, 85)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 2, 11)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: closure_macro::main::{closure#0}
 Raw bytes (35): 0x[01, 01, 03, 01, 05, 05, 0b, 09, 00, 05, 01, 10, 1c, 03, 21, 05, 04, 11, 01, 27, 02, 03, 11, 00, 16, 00, 00, 17, 00, 1e, 07, 02, 09, 00, 0a]
diff --git a/tests/coverage/closure_macro_async.cov-map b/tests/coverage/closure_macro_async.cov-map
index 212b67a8a3e..43b52008f33 100644
--- a/tests/coverage/closure_macro_async.cov-map
+++ b/tests/coverage/closure_macro_async.cov-map
@@ -15,12 +15,11 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 35, 1) to (start + 0, 43)
 
 Function name: closure_macro_async::test::{closure#0}
-Raw bytes (38): 0x[01, 01, 02, 01, 05, 05, 02, 06, 01, 23, 2b, 01, 21, 02, 02, 09, 00, 12, 02, 00, 0f, 00, 54, 05, 00, 54, 00, 55, 02, 02, 09, 02, 0b, 07, 03, 01, 00, 02]
+Raw bytes (36): 0x[01, 01, 01, 01, 05, 06, 01, 23, 2b, 01, 21, 02, 02, 09, 00, 12, 02, 00, 0f, 00, 54, 05, 00, 54, 00, 55, 02, 02, 09, 02, 0b, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 6
 - Code(Counter(0)) at (prev + 35, 43) to (start + 1, 33)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 18)
@@ -30,8 +29,7 @@ Number of file 0 mappings: 6
 - Code(Counter(1)) at (prev + 0, 84) to (start + 0, 85)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 2, 11)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
 Function name: closure_macro_async::test::{closure#0}::{closure#0}
 Raw bytes (35): 0x[01, 01, 03, 01, 05, 05, 0b, 09, 00, 05, 01, 12, 1c, 03, 21, 05, 04, 11, 01, 27, 02, 03, 11, 00, 16, 00, 00, 17, 00, 1e, 07, 02, 09, 00, 0a]
diff --git a/tests/coverage/conditions.cov-map b/tests/coverage/conditions.cov-map
index a6a427aca00..17143775b7b 100644
--- a/tests/coverage/conditions.cov-map
+++ b/tests/coverage/conditions.cov-map
@@ -1,259 +1,263 @@
 Function name: conditions::main
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 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 142
-- expression 0 operands: lhs = Counter(2), rhs = Expression(12, Add)
-- expression 1 operands: lhs = Expression(13, Add), rhs = Counter(16)
-- expression 2 operands: lhs = Expression(14, Add), rhs = Counter(15)
+Number of expressions: 148
+- expression 0 operands: lhs = Counter(2), rhs = Expression(10, Add)
+- expression 1 operands: lhs = Expression(11, Add), rhs = Counter(16)
+- expression 2 operands: lhs = Expression(12, Add), rhs = Counter(15)
 - expression 3 operands: lhs = Counter(13), rhs = Counter(14)
-- expression 4 operands: lhs = Counter(1), rhs = Zero
-- expression 5 operands: lhs = Expression(141, Add), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Zero
+- expression 4 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 5 operands: lhs = Counter(3), rhs = Counter(13)
+- expression 6 operands: lhs = Expression(7, Sub), rhs = Counter(14)
 - expression 7 operands: lhs = Counter(3), rhs = Counter(13)
-- expression 8 operands: lhs = Expression(9, Sub), rhs = Counter(14)
-- expression 9 operands: lhs = Counter(3), rhs = Counter(13)
-- expression 10 operands: lhs = Expression(14, Add), rhs = Counter(15)
-- expression 11 operands: lhs = Counter(13), rhs = Counter(14)
-- expression 12 operands: lhs = Expression(13, Add), rhs = Counter(16)
-- expression 13 operands: lhs = Expression(14, Add), rhs = Counter(15)
-- expression 14 operands: lhs = Counter(13), rhs = Counter(14)
-- expression 15 operands: lhs = Expression(140, Sub), rhs = Counter(3)
-- expression 16 operands: lhs = Expression(141, Add), rhs = Counter(2)
-- expression 17 operands: lhs = Counter(1), rhs = Zero
-- expression 18 operands: lhs = Counter(17), rhs = Zero
-- expression 19 operands: lhs = Expression(32, Add), rhs = Counter(18)
-- expression 20 operands: lhs = Counter(17), rhs = Zero
-- expression 21 operands: lhs = Expression(31, Sub), rhs = Counter(12)
-- expression 22 operands: lhs = Expression(32, Add), rhs = Counter(18)
-- expression 23 operands: lhs = Counter(17), rhs = Zero
-- expression 24 operands: lhs = Expression(30, Sub), rhs = Counter(19)
-- expression 25 operands: lhs = Expression(31, Sub), rhs = Counter(12)
-- expression 26 operands: lhs = Expression(32, Add), rhs = Counter(18)
-- expression 27 operands: lhs = Counter(17), rhs = Zero
-- expression 28 operands: lhs = Expression(29, Sub), rhs = Counter(20)
-- expression 29 operands: lhs = Expression(30, Sub), rhs = Counter(19)
-- expression 30 operands: lhs = Expression(31, Sub), rhs = Counter(12)
-- expression 31 operands: lhs = Expression(32, Add), rhs = Counter(18)
-- expression 32 operands: lhs = Counter(17), rhs = Zero
-- expression 33 operands: lhs = Expression(41, Add), rhs = Counter(21)
-- expression 34 operands: lhs = Counter(19), rhs = Counter(20)
-- expression 35 operands: lhs = Expression(40, Add), rhs = Counter(22)
-- expression 36 operands: lhs = Expression(41, Add), rhs = Counter(21)
-- expression 37 operands: lhs = Counter(19), rhs = Counter(20)
-- expression 38 operands: lhs = Counter(18), rhs = Expression(39, Add)
-- expression 39 operands: lhs = Expression(40, Add), rhs = Counter(22)
-- expression 40 operands: lhs = Expression(41, Add), rhs = Counter(21)
-- expression 41 operands: lhs = Counter(19), rhs = Counter(20)
-- expression 42 operands: lhs = Counter(24), rhs = Zero
-- expression 43 operands: lhs = Expression(56, Add), rhs = Counter(25)
-- expression 44 operands: lhs = Counter(24), rhs = Zero
-- expression 45 operands: lhs = Expression(55, Sub), rhs = Counter(11)
-- expression 46 operands: lhs = Expression(56, Add), rhs = Counter(25)
-- expression 47 operands: lhs = Counter(24), rhs = Zero
-- expression 48 operands: lhs = Expression(54, Sub), rhs = Counter(26)
-- expression 49 operands: lhs = Expression(55, Sub), rhs = Counter(11)
-- expression 50 operands: lhs = Expression(56, Add), rhs = Counter(25)
-- expression 51 operands: lhs = Counter(24), rhs = Zero
-- expression 52 operands: lhs = Expression(53, Sub), rhs = Counter(27)
-- expression 53 operands: lhs = Expression(54, Sub), rhs = Counter(26)
-- expression 54 operands: lhs = Expression(55, Sub), rhs = Counter(11)
-- expression 55 operands: lhs = Expression(56, Add), rhs = Counter(25)
-- expression 56 operands: lhs = Counter(24), rhs = Zero
-- expression 57 operands: lhs = Expression(66, Add), rhs = Counter(28)
-- expression 58 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 59 operands: lhs = Expression(65, Add), rhs = Counter(29)
-- expression 60 operands: lhs = Expression(66, Add), rhs = Counter(28)
-- expression 61 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 62 operands: lhs = Expression(63, Add), rhs = Zero
-- expression 63 operands: lhs = Counter(25), rhs = Expression(64, Add)
-- expression 64 operands: lhs = Expression(65, Add), rhs = Counter(29)
-- expression 65 operands: lhs = Expression(66, Add), rhs = Counter(28)
-- expression 66 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 67 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 68 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 69 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 70 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 71 operands: lhs = Counter(30), rhs = Zero
-- expression 72 operands: lhs = Expression(85, Add), rhs = Counter(31)
-- expression 73 operands: lhs = Counter(30), rhs = Zero
-- expression 74 operands: lhs = Expression(84, Sub), rhs = Counter(10)
-- expression 75 operands: lhs = Expression(85, Add), rhs = Counter(31)
-- expression 76 operands: lhs = Counter(30), rhs = Zero
-- expression 77 operands: lhs = Expression(83, Sub), rhs = Counter(32)
-- expression 78 operands: lhs = Expression(84, Sub), rhs = Counter(10)
-- expression 79 operands: lhs = Expression(85, Add), rhs = Counter(31)
-- expression 80 operands: lhs = Counter(30), rhs = Zero
-- expression 81 operands: lhs = Expression(82, Sub), rhs = Counter(33)
-- expression 82 operands: lhs = Expression(83, Sub), rhs = Counter(32)
-- expression 83 operands: lhs = Expression(84, Sub), rhs = Counter(10)
-- expression 84 operands: lhs = Expression(85, Add), rhs = Counter(31)
-- expression 85 operands: lhs = Counter(30), rhs = Zero
-- expression 86 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 87 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 88 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 89 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 90 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 91 operands: lhs = Counter(4), rhs = Expression(132, Add)
-- expression 92 operands: lhs = Expression(133, Add), rhs = Counter(8)
-- expression 93 operands: lhs = Expression(134, Add), rhs = Counter(7)
-- expression 94 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 95 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 96 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 97 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 98 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 99 operands: lhs = Expression(121, Add), rhs = Counter(4)
-- expression 100 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 101 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 102 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 103 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 104 operands: lhs = Expression(120, Sub), rhs = Counter(9)
-- expression 105 operands: lhs = Expression(121, Add), rhs = Counter(4)
-- expression 106 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 107 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 108 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 109 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 110 operands: lhs = Expression(119, Sub), rhs = Counter(5)
-- expression 111 operands: lhs = Expression(120, Sub), rhs = Counter(9)
-- expression 112 operands: lhs = Expression(121, Add), rhs = Counter(4)
-- expression 113 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 114 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 115 operands: lhs = Expression(124, Add), rhs = Counter(34)
+- expression 8 operands: lhs = Expression(12, Add), rhs = Counter(15)
+- expression 9 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 10 operands: lhs = Expression(11, Add), rhs = Counter(16)
+- expression 11 operands: lhs = Expression(12, Add), rhs = Counter(15)
+- expression 12 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 13 operands: lhs = Expression(147, Sub), rhs = Counter(3)
+- expression 14 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 15 operands: lhs = Expression(0, Add), rhs = Counter(18)
+- expression 16 operands: lhs = Expression(24, Sub), rhs = Counter(12)
+- expression 17 operands: lhs = Expression(0, Add), rhs = Counter(18)
+- expression 18 operands: lhs = Expression(23, Sub), rhs = Counter(19)
+- expression 19 operands: lhs = Expression(24, Sub), rhs = Counter(12)
+- expression 20 operands: lhs = Expression(0, Add), rhs = Counter(18)
+- expression 21 operands: lhs = Expression(22, Sub), rhs = Counter(20)
+- expression 22 operands: lhs = Expression(23, Sub), rhs = Counter(19)
+- expression 23 operands: lhs = Expression(24, Sub), rhs = Counter(12)
+- expression 24 operands: lhs = Expression(0, Add), rhs = Counter(18)
+- expression 25 operands: lhs = Expression(33, Add), rhs = Counter(21)
+- expression 26 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 27 operands: lhs = Expression(32, Add), rhs = Counter(22)
+- expression 28 operands: lhs = Expression(33, Add), rhs = Counter(21)
+- expression 29 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 30 operands: lhs = Counter(18), rhs = Expression(31, Add)
+- expression 31 operands: lhs = Expression(32, Add), rhs = Counter(22)
+- expression 32 operands: lhs = Expression(33, Add), rhs = Counter(21)
+- expression 33 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 34 operands: lhs = Counter(23), rhs = Counter(25)
+- expression 35 operands: lhs = Expression(43, Sub), rhs = Counter(11)
+- expression 36 operands: lhs = Counter(23), rhs = Counter(25)
+- expression 37 operands: lhs = Expression(42, Sub), rhs = Counter(26)
+- expression 38 operands: lhs = Expression(43, Sub), rhs = Counter(11)
+- expression 39 operands: lhs = Counter(23), rhs = Counter(25)
+- expression 40 operands: lhs = Expression(41, Sub), rhs = Counter(27)
+- expression 41 operands: lhs = Expression(42, Sub), rhs = Counter(26)
+- expression 42 operands: lhs = Expression(43, Sub), rhs = Counter(11)
+- expression 43 operands: lhs = Counter(23), rhs = Counter(25)
+- expression 44 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 45 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 46 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 47 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 48 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 49 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 50 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 51 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 52 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 53 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 54 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 55 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 56 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 57 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 58 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 59 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 60 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 61 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 62 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 63 operands: lhs = Expression(88, Add), rhs = Counter(31)
+- expression 64 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 65 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 66 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 67 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 68 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 69 operands: lhs = Expression(87, Sub), rhs = Counter(10)
+- expression 70 operands: lhs = Expression(88, Add), rhs = Counter(31)
+- expression 71 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 72 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 73 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 74 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 75 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 76 operands: lhs = Expression(86, Sub), rhs = Counter(32)
+- expression 77 operands: lhs = Expression(87, Sub), rhs = Counter(10)
+- expression 78 operands: lhs = Expression(88, Add), rhs = Counter(31)
+- expression 79 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 80 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 81 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 82 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 83 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 84 operands: lhs = Expression(85, Sub), rhs = Counter(33)
+- expression 85 operands: lhs = Expression(86, Sub), rhs = Counter(32)
+- expression 86 operands: lhs = Expression(87, Sub), rhs = Counter(10)
+- expression 87 operands: lhs = Expression(88, Add), rhs = Counter(31)
+- expression 88 operands: lhs = Expression(89, Add), rhs = Zero
+- expression 89 operands: lhs = Counter(25), rhs = Expression(90, Add)
+- expression 90 operands: lhs = Expression(91, Add), rhs = Counter(29)
+- expression 91 operands: lhs = Expression(92, Add), rhs = Counter(28)
+- expression 92 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 93 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 94 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 95 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 96 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 97 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 98 operands: lhs = Counter(4), rhs = Expression(139, Add)
+- expression 99 operands: lhs = Expression(140, Add), rhs = Counter(8)
+- expression 100 operands: lhs = Expression(141, Add), rhs = Counter(7)
+- expression 101 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 102 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 103 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 104 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 105 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 106 operands: lhs = Expression(128, Add), rhs = Counter(4)
+- expression 107 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 108 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 109 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 110 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 111 operands: lhs = Expression(127, Sub), rhs = Counter(9)
+- expression 112 operands: lhs = Expression(128, Add), rhs = Counter(4)
+- expression 113 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 114 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 115 operands: lhs = Expression(131, Add), rhs = Counter(34)
 - expression 116 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 117 operands: lhs = Expression(118, Sub), rhs = Counter(6)
-- expression 118 operands: lhs = Expression(119, Sub), rhs = Counter(5)
-- expression 119 operands: lhs = Expression(120, Sub), rhs = Counter(9)
-- expression 120 operands: lhs = Expression(121, Add), rhs = Counter(4)
-- expression 121 operands: lhs = Counter(31), rhs = Expression(122, Add)
-- expression 122 operands: lhs = Expression(123, Add), rhs = Counter(35)
-- expression 123 operands: lhs = Expression(124, Add), rhs = Counter(34)
-- expression 124 operands: lhs = Counter(32), rhs = Counter(33)
-- expression 125 operands: lhs = Expression(134, Add), rhs = Counter(7)
-- expression 126 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 127 operands: lhs = Expression(133, Add), rhs = Counter(8)
-- expression 128 operands: lhs = Expression(134, Add), rhs = Counter(7)
-- expression 129 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 130 operands: lhs = Expression(131, Add), rhs = Expression(135, Add)
-- expression 131 operands: lhs = Counter(4), rhs = Expression(132, Add)
-- expression 132 operands: lhs = Expression(133, Add), rhs = Counter(8)
-- expression 133 operands: lhs = Expression(134, Add), rhs = Counter(7)
-- expression 134 operands: lhs = Counter(5), rhs = Counter(6)
-- expression 135 operands: lhs = Expression(136, Add), rhs = Expression(139, Sub)
-- expression 136 operands: lhs = Expression(137, Add), rhs = Counter(12)
-- expression 137 operands: lhs = Expression(138, Add), rhs = Counter(11)
-- expression 138 operands: lhs = Counter(9), rhs = Counter(10)
-- expression 139 operands: lhs = Expression(140, Sub), rhs = Counter(3)
-- expression 140 operands: lhs = Expression(141, Add), rhs = Counter(2)
-- expression 141 operands: lhs = Counter(1), rhs = Zero
+- expression 117 operands: lhs = Expression(126, Sub), rhs = Counter(5)
+- expression 118 operands: lhs = Expression(127, Sub), rhs = Counter(9)
+- expression 119 operands: lhs = Expression(128, Add), rhs = Counter(4)
+- expression 120 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 121 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 122 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 123 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 124 operands: lhs = Expression(125, Sub), rhs = Counter(6)
+- expression 125 operands: lhs = Expression(126, Sub), rhs = Counter(5)
+- expression 126 operands: lhs = Expression(127, Sub), rhs = Counter(9)
+- expression 127 operands: lhs = Expression(128, Add), rhs = Counter(4)
+- expression 128 operands: lhs = Counter(31), rhs = Expression(129, Add)
+- expression 129 operands: lhs = Expression(130, Add), rhs = Counter(35)
+- expression 130 operands: lhs = Expression(131, Add), rhs = Counter(34)
+- expression 131 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 132 operands: lhs = Expression(141, Add), rhs = Counter(7)
+- expression 133 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 134 operands: lhs = Expression(140, Add), rhs = Counter(8)
+- expression 135 operands: lhs = Expression(141, Add), rhs = Counter(7)
+- expression 136 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 137 operands: lhs = Expression(138, Add), rhs = Expression(142, Add)
+- expression 138 operands: lhs = Counter(4), rhs = Expression(139, Add)
+- expression 139 operands: lhs = Expression(140, Add), rhs = Counter(8)
+- expression 140 operands: lhs = Expression(141, Add), rhs = Counter(7)
+- expression 141 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 142 operands: lhs = Expression(143, Add), rhs = Expression(146, Sub)
+- expression 143 operands: lhs = Expression(144, Add), rhs = Counter(12)
+- expression 144 operands: lhs = Expression(145, Add), rhs = Counter(11)
+- expression 145 operands: lhs = Counter(9), rhs = Counter(10)
+- expression 146 operands: lhs = Expression(147, Sub), rhs = Counter(3)
+- expression 147 operands: lhs = Counter(0), rhs = Counter(2)
 Number of file 0 mappings: 68
 - Code(Counter(0)) at (prev + 3, 1) to (start + 2, 12)
 - Code(Counter(1)) at (prev + 2, 13) to (start + 2, 6)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
 - Code(Expression(0, Add)) at (prev + 3, 9) to (start + 0, 10)
     = (c2 + (((c13 + c14) + c15) + c16))
-- Code(Expression(141, Add)) at (prev + 0, 16) to (start + 0, 29)
-    = (c1 + Zero)
+- Code(Counter(0)) at (prev + 0, 16) to (start + 0, 29)
 - Code(Counter(2)) at (prev + 1, 9) to (start + 1, 10)
-- Code(Expression(140, Sub)) at (prev + 2, 15) to (start + 0, 28)
-    = ((c1 + Zero) - c2)
+- Code(Expression(147, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = (c0 - c2)
 - Code(Counter(3)) at (prev + 1, 12) to (start + 0, 25)
-- Code(Expression(9, Sub)) at (prev + 0, 29) to (start + 0, 42)
+- Code(Expression(7, Sub)) at (prev + 0, 29) to (start + 0, 42)
     = (c3 - c13)
-- Code(Expression(8, Sub)) at (prev + 0, 46) to (start + 0, 60)
+- Code(Expression(6, Sub)) at (prev + 0, 46) to (start + 0, 60)
     = ((c3 - c13) - c14)
-- Code(Expression(13, Add)) at (prev + 0, 61) to (start + 2, 10)
+- Code(Expression(11, Add)) at (prev + 0, 61) to (start + 2, 10)
     = ((c13 + c14) + c15)
 - Code(Counter(16)) at (prev + 2, 10) to (start + 0, 11)
-- Code(Expression(12, Add)) at (prev + 1, 9) to (start + 1, 18)
+- Code(Expression(10, Add)) at (prev + 1, 9) to (start + 1, 18)
     = (((c13 + c14) + c15) + c16)
-- Code(Expression(139, Sub)) at (prev + 3, 9) to (start + 0, 15)
-    = (((c1 + Zero) - c2) - c3)
+- Code(Expression(146, Sub)) at (prev + 3, 9) to (start + 0, 15)
+    = ((c0 - c2) - c3)
 - Code(Expression(0, Add)) at (prev + 3, 9) to (start + 1, 12)
     = (c2 + (((c13 + c14) + c15) + c16))
 - Code(Counter(17)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(32, Add)) at (prev + 2, 8) to (start + 0, 21)
-    = (c17 + Zero)
+- Code(Expression(0, Add)) at (prev + 2, 8) to (start + 0, 21)
+    = (c2 + (((c13 + c14) + c15) + c16))
 - Code(Counter(18)) at (prev + 0, 22) to (start + 2, 6)
-- Code(Expression(31, Sub)) at (prev + 2, 15) to (start + 0, 28)
-    = ((c17 + Zero) - c18)
-- Code(Expression(30, Sub)) at (prev + 1, 12) to (start + 0, 25)
-    = (((c17 + Zero) - c18) - c12)
-- Code(Expression(29, Sub)) at (prev + 0, 29) to (start + 0, 42)
-    = ((((c17 + Zero) - c18) - c12) - c19)
-- Code(Expression(28, Sub)) at (prev + 0, 46) to (start + 0, 60)
-    = (((((c17 + Zero) - c18) - c12) - c19) - c20)
-- Code(Expression(40, Add)) at (prev + 0, 61) to (start + 2, 10)
+- Code(Expression(24, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = ((c2 + (((c13 + c14) + c15) + c16)) - c18)
+- Code(Expression(23, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = (((c2 + (((c13 + c14) + c15) + c16)) - c18) - c12)
+- Code(Expression(22, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = ((((c2 + (((c13 + c14) + c15) + c16)) - c18) - c12) - c19)
+- Code(Expression(21, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = (((((c2 + (((c13 + c14) + c15) + c16)) - c18) - c12) - c19) - c20)
+- Code(Expression(32, Add)) at (prev + 0, 61) to (start + 2, 10)
     = ((c19 + c20) + c21)
 - Code(Counter(22)) at (prev + 2, 10) to (start + 0, 11)
-- Code(Expression(39, Add)) at (prev + 1, 9) to (start + 0, 23)
+- Code(Expression(31, Add)) at (prev + 1, 9) to (start + 0, 23)
     = (((c19 + c20) + c21) + c22)
 - Code(Counter(12)) at (prev + 2, 9) to (start + 0, 15)
-- Code(Expression(38, Add)) at (prev + 3, 8) to (start + 0, 12)
+- Code(Expression(30, Add)) at (prev + 3, 8) to (start + 0, 12)
     = (c18 + (((c19 + c20) + c21) + c22))
 - Code(Counter(23)) at (prev + 1, 13) to (start + 1, 16)
 - Code(Counter(24)) at (prev + 1, 17) to (start + 2, 10)
 - Code(Zero) at (prev + 2, 10) to (start + 0, 11)
-- Code(Expression(56, Add)) at (prev + 2, 12) to (start + 0, 25)
-    = (c24 + Zero)
+- Code(Counter(23)) at (prev + 2, 12) to (start + 0, 25)
 - Code(Counter(25)) at (prev + 0, 26) to (start + 2, 10)
-- Code(Expression(55, Sub)) at (prev + 4, 17) to (start + 0, 30)
-    = ((c24 + Zero) - c25)
-- Code(Expression(54, Sub)) at (prev + 1, 16) to (start + 0, 29)
-    = (((c24 + Zero) - c25) - c11)
-- Code(Expression(53, Sub)) at (prev + 0, 33) to (start + 0, 46)
-    = ((((c24 + Zero) - c25) - c11) - c26)
-- Code(Expression(52, Sub)) at (prev + 0, 50) to (start + 0, 64)
-    = (((((c24 + Zero) - c25) - c11) - c26) - c27)
-- Code(Expression(65, Add)) at (prev + 0, 65) to (start + 2, 14)
+- Code(Expression(43, Sub)) at (prev + 4, 17) to (start + 0, 30)
+    = (c23 - c25)
+- Code(Expression(42, Sub)) at (prev + 1, 16) to (start + 0, 29)
+    = ((c23 - c25) - c11)
+- Code(Expression(41, Sub)) at (prev + 0, 33) to (start + 0, 46)
+    = (((c23 - c25) - c11) - c26)
+- Code(Expression(40, Sub)) at (prev + 0, 50) to (start + 0, 64)
+    = ((((c23 - c25) - c11) - c26) - c27)
+- Code(Expression(91, Add)) at (prev + 0, 65) to (start + 2, 14)
     = ((c26 + c27) + c28)
 - Code(Counter(29)) at (prev + 2, 14) to (start + 0, 15)
-- Code(Expression(64, Add)) at (prev + 1, 13) to (start + 0, 27)
+- Code(Expression(90, Add)) at (prev + 1, 13) to (start + 0, 27)
     = (((c26 + c27) + c28) + c29)
 - Code(Counter(11)) at (prev + 2, 13) to (start + 0, 19)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(62, Add)) at (prev + 2, 9) to (start + 1, 12)
+- Code(Expression(88, Add)) at (prev + 2, 9) to (start + 1, 12)
     = ((c25 + (((c26 + c27) + c28) + c29)) + Zero)
 - Code(Counter(30)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Zero) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(121, Add)) at (prev + 2, 9) to (start + 0, 10)
+- Code(Expression(128, Add)) at (prev + 2, 9) to (start + 0, 10)
     = (c31 + (((c32 + c33) + c34) + c35))
-- Code(Expression(85, Add)) at (prev + 0, 16) to (start + 0, 29)
-    = (c30 + Zero)
+- Code(Expression(88, Add)) at (prev + 0, 16) to (start + 0, 29)
+    = ((c25 + (((c26 + c27) + c28) + c29)) + Zero)
 - Code(Counter(31)) at (prev + 0, 30) to (start + 2, 6)
-- Code(Expression(84, Sub)) at (prev + 2, 15) to (start + 0, 28)
-    = ((c30 + Zero) - c31)
-- Code(Expression(83, Sub)) at (prev + 1, 12) to (start + 0, 25)
-    = (((c30 + Zero) - c31) - c10)
-- Code(Expression(82, Sub)) at (prev + 0, 29) to (start + 0, 42)
-    = ((((c30 + Zero) - c31) - c10) - c32)
-- Code(Expression(81, Sub)) at (prev + 0, 46) to (start + 0, 60)
-    = (((((c30 + Zero) - c31) - c10) - c32) - c33)
-- Code(Expression(123, Add)) at (prev + 0, 61) to (start + 2, 10)
+- Code(Expression(87, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = (((c25 + (((c26 + c27) + c28) + c29)) + Zero) - c31)
+- Code(Expression(86, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = ((((c25 + (((c26 + c27) + c28) + c29)) + Zero) - c31) - c10)
+- Code(Expression(85, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = (((((c25 + (((c26 + c27) + c28) + c29)) + Zero) - c31) - c10) - c32)
+- Code(Expression(84, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = ((((((c25 + (((c26 + c27) + c28) + c29)) + Zero) - c31) - c10) - c32) - c33)
+- Code(Expression(130, Add)) at (prev + 0, 61) to (start + 2, 10)
     = ((c32 + c33) + c34)
 - Code(Counter(35)) at (prev + 2, 10) to (start + 0, 11)
-- Code(Expression(122, Add)) at (prev + 1, 9) to (start + 0, 23)
+- Code(Expression(129, Add)) at (prev + 1, 9) to (start + 0, 23)
     = (((c32 + c33) + c34) + c35)
 - Code(Counter(10)) at (prev + 2, 13) to (start + 2, 15)
-- Code(Expression(131, Add)) at (prev + 5, 9) to (start + 0, 10)
+- Code(Expression(138, Add)) at (prev + 5, 9) to (start + 0, 10)
     = (c4 + (((c5 + c6) + c7) + c8))
-- Code(Expression(121, Add)) at (prev + 0, 16) to (start + 0, 29)
+- Code(Expression(128, Add)) at (prev + 0, 16) to (start + 0, 29)
     = (c31 + (((c32 + c33) + c34) + c35))
 - Code(Counter(4)) at (prev + 0, 30) to (start + 2, 6)
-- Code(Expression(120, Sub)) at (prev + 2, 15) to (start + 0, 28)
+- Code(Expression(127, Sub)) at (prev + 2, 15) to (start + 0, 28)
     = ((c31 + (((c32 + c33) + c34) + c35)) - c4)
-- Code(Expression(119, Sub)) at (prev + 1, 12) to (start + 0, 25)
+- Code(Expression(126, Sub)) at (prev + 1, 12) to (start + 0, 25)
     = (((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9)
-- Code(Expression(118, Sub)) at (prev + 0, 29) to (start + 0, 42)
+- Code(Expression(125, Sub)) at (prev + 0, 29) to (start + 0, 42)
     = ((((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9) - c5)
-- Code(Expression(117, Sub)) at (prev + 0, 46) to (start + 0, 60)
+- Code(Expression(124, Sub)) at (prev + 0, 46) to (start + 0, 60)
     = (((((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9) - c5) - c6)
-- Code(Expression(133, Add)) at (prev + 0, 61) to (start + 2, 10)
+- Code(Expression(140, Add)) at (prev + 0, 61) to (start + 2, 10)
     = ((c5 + c6) + c7)
 - Code(Counter(8)) at (prev + 2, 10) to (start + 0, 11)
-- Code(Expression(132, Add)) at (prev + 1, 9) to (start + 0, 23)
+- Code(Expression(139, Add)) at (prev + 1, 9) to (start + 0, 23)
     = (((c5 + c6) + c7) + c8)
 - Code(Counter(9)) at (prev + 2, 9) to (start + 0, 15)
-- Code(Expression(130, Add)) at (prev + 2, 1) to (start + 0, 2)
-    = ((c4 + (((c5 + c6) + c7) + c8)) + ((((c9 + c10) + c11) + c12) + (((c1 + Zero) - c2) - c3)))
+- Code(Expression(137, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = ((c4 + (((c5 + c6) + c7) + c8)) + ((((c9 + c10) + c11) + c12) + ((c0 - c2) - c3)))
 
diff --git a/tests/coverage/coroutine.cov-map b/tests/coverage/coroutine.cov-map
index 255708d365e..6ead788b82f 100644
--- a/tests/coverage/coroutine.cov-map
+++ b/tests/coverage/coroutine.cov-map
@@ -1,17 +1,15 @@
 Function name: coroutine::get_u32
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 0b, 01, 01, 0b, 05, 02, 09, 00, 0e, 02, 02, 09, 00, 28, 07, 02, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 0b, 01, 01, 0b, 05, 02, 09, 00, 0e, 02, 02, 09, 00, 28, 01, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 11, 1) to (start + 1, 11)
 - Code(Counter(1)) at (prev + 2, 9) to (start + 0, 14)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 40)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 1) to (start + 0, 2)
 
 Function name: coroutine::main
 Raw bytes (65): 0x[01, 01, 08, 07, 0d, 05, 09, 11, 15, 1e, 19, 11, 15, 15, 19, 1e, 19, 11, 15, 09, 01, 13, 01, 02, 16, 01, 07, 0b, 00, 2e, 11, 01, 2b, 00, 2d, 03, 01, 0e, 00, 35, 11, 02, 0b, 00, 2e, 1e, 01, 22, 00, 27, 1a, 00, 2c, 00, 2e, 17, 01, 0e, 00, 35, 1a, 02, 01, 00, 02]
diff --git a/tests/coverage/dead_code.cov-map b/tests/coverage/dead_code.cov-map
index 0b8a40a8cde..31599d9072c 100644
--- a/tests/coverage/dead_code.cov-map
+++ b/tests/coverage/dead_code.cov-map
@@ -1,17 +1,15 @@
 Function name: dead_code::main
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 1b, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 1b, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 27, 1) to (start + 7, 15)
 - Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: dead_code::unused_fn (unused)
 Raw bytes (24): 0x[01, 01, 00, 04, 00, 0f, 01, 07, 0f, 00, 07, 10, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
diff --git a/tests/coverage/drop_trait.cov-map b/tests/coverage/drop_trait.cov-map
index 203d1048b05..eb9d7d7acfd 100644
--- a/tests/coverage/drop_trait.cov-map
+++ b/tests/coverage/drop_trait.cov-map
@@ -7,15 +7,13 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 9, 5) to (start + 2, 6)
 
 Function name: drop_trait::main
-Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 0e, 01, 05, 0c, 05, 06, 09, 01, 16, 00, 02, 06, 04, 0b, 03, 05, 01, 00, 02]
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 0e, 01, 05, 0c, 05, 06, 09, 01, 16, 00, 02, 06, 04, 0b, 01, 05, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 1
-- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of expressions: 0
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 14, 1) to (start + 5, 12)
 - Code(Counter(1)) at (prev + 6, 9) to (start + 1, 22)
 - Code(Zero) at (prev + 2, 6) to (start + 4, 11)
-- Code(Expression(0, Add)) at (prev + 5, 1) to (start + 0, 2)
-    = (c1 + Zero)
+- Code(Counter(0)) at (prev + 5, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/fn_sig_into_try.cov-map b/tests/coverage/fn_sig_into_try.cov-map
index c3969f8ce99..49758954831 100644
--- a/tests/coverage/fn_sig_into_try.cov-map
+++ b/tests/coverage/fn_sig_into_try.cov-map
@@ -7,47 +7,41 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 10, 1) to (start + 5, 2)
 
 Function name: fn_sig_into_try::b
-Raw bytes (28): 0x[01, 01, 02, 01, 00, 00, 02, 04, 01, 11, 01, 03, 0f, 00, 03, 0f, 00, 10, 02, 01, 05, 00, 0c, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 00, 04, 01, 11, 01, 03, 0f, 00, 03, 0f, 00, 10, 02, 01, 05, 00, 0c, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Zero
-- expression 1 operands: lhs = Zero, rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 17, 1) to (start + 3, 15)
 - Code(Zero) at (prev + 3, 15) to (start + 0, 16)
 - Code(Expression(0, Sub)) at (prev + 1, 5) to (start + 0, 12)
     = (c0 - Zero)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (Zero + (c0 - Zero))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: fn_sig_into_try::c
-Raw bytes (28): 0x[01, 01, 02, 01, 00, 00, 02, 04, 01, 18, 01, 03, 17, 00, 03, 17, 00, 18, 02, 01, 05, 00, 0c, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 00, 04, 01, 18, 01, 03, 17, 00, 03, 17, 00, 18, 02, 01, 05, 00, 0c, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Zero
-- expression 1 operands: lhs = Zero, rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 24, 1) to (start + 3, 23)
 - Code(Zero) at (prev + 3, 23) to (start + 0, 24)
 - Code(Expression(0, Sub)) at (prev + 1, 5) to (start + 0, 12)
     = (c0 - Zero)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (Zero + (c0 - Zero))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: fn_sig_into_try::d
-Raw bytes (28): 0x[01, 01, 02, 01, 00, 00, 02, 04, 01, 1f, 01, 04, 0f, 00, 04, 0f, 00, 10, 02, 01, 05, 00, 0c, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 00, 04, 01, 1f, 01, 04, 0f, 00, 04, 0f, 00, 10, 02, 01, 05, 00, 0c, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Zero
-- expression 1 operands: lhs = Zero, rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 31, 1) to (start + 4, 15)
 - Code(Zero) at (prev + 4, 15) to (start + 0, 16)
 - Code(Expression(0, Sub)) at (prev + 1, 5) to (start + 0, 12)
     = (c0 - Zero)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (Zero + (c0 - Zero))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/generics.cov-map b/tests/coverage/generics.cov-map
index 6079a433cd0..48e191c1156 100644
--- a/tests/coverage/generics.cov-map
+++ b/tests/coverage/generics.cov-map
@@ -31,15 +31,13 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 10, 5) to (start + 2, 6)
 
 Function name: generics::main
-Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 16, 01, 08, 0c, 05, 09, 09, 01, 16, 00, 02, 06, 04, 0b, 03, 05, 01, 00, 02]
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 16, 01, 08, 0c, 05, 09, 09, 01, 16, 00, 02, 06, 04, 0b, 01, 05, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 1
-- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of expressions: 0
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 22, 1) to (start + 8, 12)
 - Code(Counter(1)) at (prev + 9, 9) to (start + 1, 22)
 - Code(Zero) at (prev + 2, 6) to (start + 4, 11)
-- Code(Expression(0, Add)) at (prev + 5, 1) to (start + 0, 2)
-    = (c1 + Zero)
+- Code(Counter(0)) at (prev + 5, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/if.cov-map b/tests/coverage/if.cov-map
index d7122f4b1a0..2b5ae97b406 100644
--- a/tests/coverage/if.cov-map
+++ b/tests/coverage/if.cov-map
@@ -1,15 +1,13 @@
 Function name: if::main
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 04, 01, 12, 10, 05, 13, 05, 05, 06, 02, 05, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 04, 01, 12, 10, 05, 13, 05, 05, 06, 02, 05, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 4, 1) to (start + 18, 16)
 - Code(Counter(1)) at (prev + 19, 5) to (start + 5, 6)
 - Code(Expression(0, Sub)) at (prev + 5, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/if_else.cov-map b/tests/coverage/if_else.cov-map
index 7163681d3a0..c2111917e55 100644
--- a/tests/coverage/if_else.cov-map
+++ b/tests/coverage/if_else.cov-map
@@ -1,25 +1,18 @@
 Function name: if_else::main
-Raw bytes (53): 0x[01, 01, 07, 01, 05, 05, 02, 1b, 09, 05, 02, 09, 16, 1b, 09, 05, 02, 07, 01, 04, 01, 08, 10, 05, 09, 05, 05, 06, 02, 08, 09, 02, 10, 1b, 06, 09, 00, 10, 09, 01, 05, 05, 06, 16, 07, 05, 05, 06, 13, 06, 01, 00, 02]
+Raw bytes (43): 0x[01, 01, 02, 01, 05, 01, 09, 07, 01, 04, 01, 08, 10, 05, 09, 05, 05, 06, 02, 08, 09, 02, 10, 01, 06, 09, 00, 10, 09, 01, 05, 05, 06, 06, 07, 05, 05, 06, 01, 06, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 7
+Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(6, Add), rhs = Counter(2)
-- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Counter(2), rhs = Expression(5, Sub)
-- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
 Number of file 0 mappings: 7
 - Code(Counter(0)) at (prev + 4, 1) to (start + 8, 16)
 - Code(Counter(1)) at (prev + 9, 5) to (start + 5, 6)
 - Code(Expression(0, Sub)) at (prev + 8, 9) to (start + 2, 16)
     = (c0 - c1)
-- Code(Expression(6, Add)) at (prev + 6, 9) to (start + 0, 16)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 6, 9) to (start + 0, 16)
 - Code(Counter(2)) at (prev + 1, 5) to (start + 5, 6)
-- Code(Expression(5, Sub)) at (prev + 7, 5) to (start + 5, 6)
-    = ((c1 + (c0 - c1)) - c2)
-- Code(Expression(4, Add)) at (prev + 6, 1) to (start + 0, 2)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Expression(1, Sub)) at (prev + 7, 5) to (start + 5, 6)
+    = (c0 - c2)
+- Code(Counter(0)) at (prev + 6, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/if_not.cov-map b/tests/coverage/if_not.cov-map
index 3c660551dea..9e11ed787a8 100644
--- a/tests/coverage/if_not.cov-map
+++ b/tests/coverage/if_not.cov-map
@@ -1,39 +1,23 @@
 Function name: if_not::if_not
-Raw bytes (86): 0x[01, 01, 10, 01, 05, 05, 02, 3f, 09, 05, 02, 09, 3a, 3f, 09, 05, 02, 37, 0d, 09, 3a, 3f, 09, 05, 02, 0d, 32, 37, 0d, 09, 3a, 3f, 09, 05, 02, 0a, 01, 05, 01, 03, 0d, 02, 04, 05, 02, 06, 05, 02, 06, 00, 07, 3f, 03, 09, 01, 0d, 3a, 02, 05, 02, 06, 09, 02, 06, 00, 07, 37, 03, 09, 01, 0d, 32, 02, 05, 02, 06, 0d, 02, 0c, 02, 06, 2f, 03, 01, 00, 02]
+Raw bytes (60): 0x[01, 01, 03, 01, 05, 01, 09, 01, 0d, 0a, 01, 05, 01, 03, 0d, 02, 04, 05, 02, 06, 05, 02, 06, 00, 07, 01, 03, 09, 01, 0d, 06, 02, 05, 02, 06, 09, 02, 06, 00, 07, 01, 03, 09, 01, 0d, 0a, 02, 05, 02, 06, 0d, 02, 0c, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 16
+Number of expressions: 3
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(15, Add), rhs = Counter(2)
-- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Counter(2), rhs = Expression(14, Sub)
-- expression 5 operands: lhs = Expression(15, Add), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 7 operands: lhs = Expression(13, Add), rhs = Counter(3)
-- expression 8 operands: lhs = Counter(2), rhs = Expression(14, Sub)
-- expression 9 operands: lhs = Expression(15, Add), rhs = Counter(2)
-- expression 10 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 11 operands: lhs = Counter(3), rhs = Expression(12, Sub)
-- expression 12 operands: lhs = Expression(13, Add), rhs = Counter(3)
-- expression 13 operands: lhs = Counter(2), rhs = Expression(14, Sub)
-- expression 14 operands: lhs = Expression(15, Add), rhs = Counter(2)
-- expression 15 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(3)
 Number of file 0 mappings: 10
 - Code(Counter(0)) at (prev + 5, 1) to (start + 3, 13)
 - Code(Expression(0, Sub)) at (prev + 4, 5) to (start + 2, 6)
     = (c0 - c1)
 - Code(Counter(1)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(15, Add)) at (prev + 3, 9) to (start + 1, 13)
-    = (c1 + (c0 - c1))
-- Code(Expression(14, Sub)) at (prev + 2, 5) to (start + 2, 6)
-    = ((c1 + (c0 - c1)) - c2)
+- Code(Counter(0)) at (prev + 3, 9) to (start + 1, 13)
+- Code(Expression(1, Sub)) at (prev + 2, 5) to (start + 2, 6)
+    = (c0 - c2)
 - Code(Counter(2)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(13, Add)) at (prev + 3, 9) to (start + 1, 13)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
-- Code(Expression(12, Sub)) at (prev + 2, 5) to (start + 2, 6)
-    = ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)
+- Code(Counter(0)) at (prev + 3, 9) to (start + 1, 13)
+- Code(Expression(2, Sub)) at (prev + 2, 5) to (start + 2, 6)
+    = (c0 - c3)
 - Code(Counter(3)) at (prev + 2, 12) to (start + 2, 6)
-- Code(Expression(11, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/inline-dead.cov-map b/tests/coverage/inline-dead.cov-map
index f77781ca028..96b907cbe15 100644
--- a/tests/coverage/inline-dead.cov-map
+++ b/tests/coverage/inline-dead.cov-map
@@ -7,19 +7,17 @@ Number of file 0 mappings: 1
 - Code(Zero) at (prev + 23, 1) to (start + 2, 2)
 
 Function name: inline_dead::live::<false>
-Raw bytes (28): 0x[01, 01, 02, 01, 00, 00, 02, 04, 01, 0e, 01, 01, 09, 00, 02, 09, 00, 0f, 02, 02, 09, 00, 0a, 07, 02, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 00, 04, 01, 0e, 01, 01, 09, 00, 02, 09, 00, 0f, 02, 02, 09, 00, 0a, 01, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Zero
-- expression 1 operands: lhs = Zero, rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 14, 1) to (start + 1, 9)
 - Code(Zero) at (prev + 2, 9) to (start + 0, 15)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 10)
     = (c0 - Zero)
-- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
-    = (Zero + (c0 - Zero))
+- Code(Counter(0)) at (prev + 2, 1) to (start + 0, 2)
 
 Function name: inline_dead::main
 Raw bytes (14): 0x[01, 01, 00, 02, 01, 04, 01, 03, 0a, 01, 06, 05, 01, 02]
diff --git a/tests/coverage/inline.cov-map b/tests/coverage/inline.cov-map
index 001c333ae6d..2366a3bc534 100644
--- a/tests/coverage/inline.cov-map
+++ b/tests/coverage/inline.cov-map
@@ -1,18 +1,16 @@
 Function name: inline::display::<char>
-Raw bytes (33): 0x[01, 01, 02, 01, 05, 03, 05, 05, 01, 29, 01, 00, 22, 05, 01, 09, 00, 0a, 03, 00, 0e, 00, 10, 05, 00, 11, 02, 06, 06, 03, 05, 01, 02]
+Raw bytes (31): 0x[01, 01, 01, 01, 05, 05, 01, 29, 01, 00, 22, 05, 01, 09, 00, 0a, 03, 00, 0e, 00, 10, 05, 00, 11, 02, 06, 01, 03, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(1)
 Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 41, 1) to (start + 0, 34)
 - Code(Counter(1)) at (prev + 1, 9) to (start + 0, 10)
 - Code(Expression(0, Add)) at (prev + 0, 14) to (start + 0, 16)
     = (c0 + c1)
 - Code(Counter(1)) at (prev + 0, 17) to (start + 2, 6)
-- Code(Expression(1, Sub)) at (prev + 3, 5) to (start + 1, 2)
-    = ((c0 + c1) - c1)
+- Code(Counter(0)) at (prev + 3, 5) to (start + 1, 2)
 
 Function name: inline::error
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 31, 01, 01, 14]
diff --git a/tests/coverage/inner_items.cov-map b/tests/coverage/inner_items.cov-map
index 3f39d74efba..6ccc3f0bafc 100644
--- a/tests/coverage/inner_items.cov-map
+++ b/tests/coverage/inner_items.cov-map
@@ -15,29 +15,22 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 40, 9) to (start + 3, 10)
 
 Function name: inner_items::main
-Raw bytes (53): 0x[01, 01, 07, 01, 05, 05, 02, 1b, 09, 05, 02, 09, 16, 1b, 09, 05, 02, 07, 01, 03, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 1b, 24, 08, 00, 0f, 09, 00, 10, 02, 06, 16, 02, 06, 00, 07, 13, 02, 09, 05, 02]
+Raw bytes (43): 0x[01, 01, 02, 01, 05, 01, 09, 07, 01, 03, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 01, 24, 08, 00, 0f, 09, 00, 10, 02, 06, 06, 02, 06, 00, 07, 01, 02, 09, 05, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 7
+Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(6, Add), rhs = Counter(2)
-- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Counter(2), rhs = Expression(5, Sub)
-- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
 Number of file 0 mappings: 7
 - Code(Counter(0)) at (prev + 3, 1) to (start + 7, 15)
 - Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(6, Add)) at (prev + 36, 8) to (start + 0, 15)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 36, 8) to (start + 0, 15)
 - Code(Counter(2)) at (prev + 0, 16) to (start + 2, 6)
-- Code(Expression(5, Sub)) at (prev + 2, 6) to (start + 0, 7)
-    = ((c1 + (c0 - c1)) - c2)
-- Code(Expression(4, Add)) at (prev + 2, 9) to (start + 5, 2)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Expression(1, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c2)
+- Code(Counter(0)) at (prev + 2, 9) to (start + 5, 2)
 
 Function name: inner_items::main::in_func
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 12, 05, 04, 06]
diff --git a/tests/coverage/issue-84561.cov-map b/tests/coverage/issue-84561.cov-map
index ab66a2fffce..c4087d9369d 100644
--- a/tests/coverage/issue-84561.cov-map
+++ b/tests/coverage/issue-84561.cov-map
@@ -1,17 +1,15 @@
 Function name: <issue_84561::Foo as core::fmt::Debug>::fmt
-Raw bytes (29): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 8a, 01, 05, 01, 25, 05, 01, 25, 00, 26, 02, 01, 09, 00, 0f, 07, 01, 05, 00, 06]
+Raw bytes (27): 0x[01, 01, 01, 01, 05, 04, 01, 8a, 01, 05, 01, 25, 05, 01, 25, 00, 26, 02, 01, 09, 00, 0f, 01, 01, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 138, 5) to (start + 1, 37)
 - Code(Counter(1)) at (prev + 1, 37) to (start + 0, 38)
 - Code(Expression(0, Sub)) at (prev + 1, 9) to (start + 0, 15)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 0, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 0, 6)
 
 Function name: issue_84561::main
 Raw bytes (10): 0x[01, 01, 00, 01, 01, b4, 01, 01, 04, 02]
@@ -22,51 +20,30 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 180, 1) to (start + 4, 2)
 
 Function name: issue_84561::test1
-Raw bytes (78): 0x[01, 01, 0e, 05, 06, 01, 05, 09, 36, 03, 09, 0d, 2e, 33, 0d, 09, 36, 03, 09, 11, 26, 2b, 11, 0d, 2e, 33, 0d, 09, 36, 03, 09, 09, 01, 9a, 01, 01, 01, 0b, 05, 01, 0c, 00, 1e, 03, 01, 05, 00, 0b, 09, 00, 0c, 00, 1e, 33, 01, 0d, 01, 0b, 0d, 01, 0c, 00, 1e, 2b, 01, 05, 03, 0b, 11, 03, 0c, 00, 1e, 23, 01, 01, 00, 02]
+Raw bytes (50): 0x[01, 01, 00, 09, 01, 9a, 01, 01, 01, 0b, 05, 01, 0c, 00, 1e, 01, 01, 05, 00, 0b, 09, 00, 0c, 00, 1e, 01, 01, 0d, 01, 0b, 0d, 01, 0c, 00, 1e, 01, 01, 05, 03, 0b, 11, 03, 0c, 00, 1e, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 14
-- expression 0 operands: lhs = Counter(1), rhs = Expression(1, Sub)
-- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 2 operands: lhs = Counter(2), rhs = Expression(13, Sub)
-- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(2)
-- expression 4 operands: lhs = Counter(3), rhs = Expression(11, Sub)
-- expression 5 operands: lhs = Expression(12, Add), rhs = Counter(3)
-- expression 6 operands: lhs = Counter(2), rhs = Expression(13, Sub)
-- expression 7 operands: lhs = Expression(0, Add), rhs = Counter(2)
-- expression 8 operands: lhs = Counter(4), rhs = Expression(9, Sub)
-- expression 9 operands: lhs = Expression(10, Add), rhs = Counter(4)
-- expression 10 operands: lhs = Counter(3), rhs = Expression(11, Sub)
-- expression 11 operands: lhs = Expression(12, Add), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(2), rhs = Expression(13, Sub)
-- expression 13 operands: lhs = Expression(0, Add), rhs = Counter(2)
+Number of expressions: 0
 Number of file 0 mappings: 9
 - Code(Counter(0)) at (prev + 154, 1) to (start + 1, 11)
 - Code(Counter(1)) at (prev + 1, 12) to (start + 0, 30)
-- Code(Expression(0, Add)) at (prev + 1, 5) to (start + 0, 11)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 0, 11)
 - Code(Counter(2)) at (prev + 0, 12) to (start + 0, 30)
-- Code(Expression(12, Add)) at (prev + 1, 13) to (start + 1, 11)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Counter(0)) at (prev + 1, 13) to (start + 1, 11)
 - Code(Counter(3)) at (prev + 1, 12) to (start + 0, 30)
-- Code(Expression(10, Add)) at (prev + 1, 5) to (start + 3, 11)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 3, 11)
 - Code(Counter(4)) at (prev + 3, 12) to (start + 0, 30)
-- Code(Expression(8, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: issue_84561::test2
-Raw bytes (24): 0x[01, 01, 02, 05, 06, 01, 05, 03, 01, b0, 01, 01, 01, 10, 05, 01, 11, 00, 23, 03, 01, 01, 00, 02]
+Raw bytes (20): 0x[01, 01, 00, 03, 01, b0, 01, 01, 01, 10, 05, 01, 11, 00, 23, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
-- expression 0 operands: lhs = Counter(1), rhs = Expression(1, Sub)
-- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+Number of expressions: 0
 Number of file 0 mappings: 3
 - Code(Counter(0)) at (prev + 176, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 1, 17) to (start + 0, 35)
-- Code(Expression(0, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: issue_84561::test2::call_print
 Raw bytes (10): 0x[01, 01, 00, 01, 01, a7, 01, 09, 02, 0a]
@@ -77,10 +54,10 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 167, 9) to (start + 2, 10)
 
 Function name: issue_84561::test3
-Raw bytes (436): 0x[01, 01, 41, 05, 00, 0d, 00, 15, 00, 12, 00, 15, 00, 21, 00, 1e, 00, 21, 00, 31, 00, 3d, 00, 2e, 45, 3d, 00, 42, 49, 45, 00, 3f, 51, 42, 49, 45, 00, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 92, 01, 55, 51, 00, 8f, 01, 5d, 92, 01, 55, 51, 00, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 82, 01, 65, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 00, fe, 01, 82, 02, 00, 69, 6d, 69, 6d, 82, 02, 00, 69, 6d, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, ee, 01, 00, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 33, 01, 08, 01, 03, 1c, 05, 04, 09, 01, 1c, 02, 02, 05, 04, 1f, 0d, 05, 05, 00, 1f, 06, 01, 05, 00, 1f, 15, 01, 09, 01, 1c, 12, 02, 05, 00, 1f, 0e, 01, 05, 00, 0f, 00, 00, 20, 00, 30, 21, 01, 05, 03, 0f, 00, 03, 20, 00, 30, 00, 00, 33, 00, 41, 00, 00, 4b, 00, 5a, 1e, 01, 05, 00, 0f, 00, 05, 09, 03, 10, 00, 05, 0d, 00, 1b, 00, 02, 0d, 00, 1c, 1a, 04, 09, 05, 06, 31, 06, 05, 03, 06, 22, 04, 05, 03, 06, 3d, 04, 09, 04, 06, 2e, 05, 08, 00, 0f, 45, 01, 09, 03, 0a, 2a, 05, 09, 03, 0a, 3f, 05, 08, 00, 0f, 51, 01, 09, 00, 13, 00, 03, 0d, 00, 1d, 3a, 03, 09, 00, 13, 00, 03, 0d, 00, 1d, 87, 01, 03, 05, 00, 0f, 8f, 01, 01, 0c, 00, 13, 5d, 01, 0d, 00, 13, 8a, 01, 02, 0d, 00, 13, 82, 01, 04, 05, 02, 13, 65, 03, 0d, 00, 13, 7e, 02, 0d, 00, 13, f3, 01, 03, 05, 00, 0f, 69, 01, 0c, 00, 13, 6d, 01, 0d, 03, 0e, 75, 04, 0d, 00, 13, fb, 01, 02, 0d, 00, 17, 82, 02, 01, 14, 00, 1b, 00, 01, 15, 00, 1b, fe, 01, 02, 15, 00, 1b, f6, 01, 04, 0d, 00, 13, 7d, 03, 09, 00, 19, ee, 01, 02, 05, 00, 0f, ea, 01, 03, 09, 00, 22, 00, 02, 05, 00, 0f, 00, 03, 09, 00, 2c, 00, 02, 01, 00, 02]
+Raw bytes (375): 0x[01, 01, 31, 05, 00, 0d, 00, 15, 00, 12, 00, 15, 00, 21, 00, 1e, 00, 21, 00, 31, 00, 3d, 00, 2e, 45, 3d, 00, 42, 49, 45, 00, 3f, 51, 42, 49, 45, 00, 7a, 55, 51, 00, 7a, 55, 51, 00, 77, 5d, 7a, 55, 51, 00, 77, 61, 7a, 55, 51, 00, 72, 65, 77, 61, 7a, 55, 51, 00, 75, be, 01, c2, 01, 79, 69, 6d, 69, 6d, 69, 6d, c2, 01, 00, 69, 6d, c2, 01, 79, 69, 6d, bb, 01, 7d, 75, be, 01, c2, 01, 79, 69, 6d, b6, 01, 00, bb, 01, 7d, 75, be, 01, c2, 01, 79, 69, 6d, 33, 01, 08, 01, 03, 1c, 05, 04, 09, 01, 1c, 02, 02, 05, 04, 1f, 0d, 05, 05, 00, 1f, 06, 01, 05, 00, 1f, 15, 01, 09, 01, 1c, 12, 02, 05, 00, 1f, 0e, 01, 05, 00, 0f, 00, 00, 20, 00, 30, 21, 01, 05, 03, 0f, 00, 03, 20, 00, 30, 00, 00, 33, 00, 41, 00, 00, 4b, 00, 5a, 1e, 01, 05, 00, 0f, 00, 05, 09, 03, 10, 00, 05, 0d, 00, 1b, 00, 02, 0d, 00, 1c, 1a, 04, 09, 05, 06, 31, 06, 05, 03, 06, 22, 04, 05, 03, 06, 3d, 04, 09, 04, 06, 2e, 05, 08, 00, 0f, 45, 01, 09, 03, 0a, 2a, 05, 09, 03, 0a, 3f, 05, 08, 00, 0f, 51, 01, 09, 00, 13, 00, 03, 0d, 00, 1d, 3a, 03, 09, 00, 13, 00, 03, 0d, 00, 1d, 77, 03, 05, 00, 0f, 77, 01, 0c, 00, 13, 5d, 01, 0d, 00, 13, 56, 02, 0d, 00, 13, 72, 04, 05, 02, 13, 65, 03, 0d, 00, 13, 6e, 02, 0d, 00, 13, bb, 01, 03, 05, 00, 0f, 69, 01, 0c, 00, 13, 6d, 01, 0d, 03, 0e, 75, 04, 0d, 00, 13, c2, 01, 02, 0d, 00, 17, c2, 01, 01, 14, 00, 1b, 00, 01, 15, 00, 1b, 92, 01, 02, 15, 00, 1b, be, 01, 04, 0d, 00, 13, 7d, 03, 09, 00, 19, b6, 01, 02, 05, 00, 0f, b2, 01, 03, 09, 00, 22, 00, 02, 05, 00, 0f, 00, 03, 09, 00, 2c, 00, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 65
+Number of expressions: 49
 - expression 0 operands: lhs = Counter(1), rhs = Zero
 - expression 1 operands: lhs = Counter(3), rhs = Zero
 - expression 2 operands: lhs = Counter(5), rhs = Zero
@@ -98,54 +75,38 @@ Number of expressions: 65
 - expression 14 operands: lhs = Expression(15, Add), rhs = Counter(20)
 - expression 15 operands: lhs = Expression(16, Sub), rhs = Counter(18)
 - expression 16 operands: lhs = Counter(17), rhs = Zero
-- expression 17 operands: lhs = Counter(23), rhs = Expression(34, Sub)
-- expression 18 operands: lhs = Expression(35, Add), rhs = Counter(23)
-- expression 19 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 17 operands: lhs = Expression(30, Sub), rhs = Counter(21)
+- expression 18 operands: lhs = Counter(20), rhs = Zero
+- expression 19 operands: lhs = Expression(30, Sub), rhs = Counter(21)
 - expression 20 operands: lhs = Counter(20), rhs = Zero
-- expression 21 operands: lhs = Expression(36, Sub), rhs = Counter(21)
-- expression 22 operands: lhs = Counter(20), rhs = Zero
-- expression 23 operands: lhs = Expression(35, Add), rhs = Counter(23)
-- expression 24 operands: lhs = Expression(36, Sub), rhs = Counter(21)
-- expression 25 operands: lhs = Counter(20), rhs = Zero
-- expression 26 operands: lhs = Expression(33, Add), rhs = Counter(24)
-- expression 27 operands: lhs = Counter(23), rhs = Expression(34, Sub)
-- expression 28 operands: lhs = Expression(35, Add), rhs = Counter(23)
-- expression 29 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 21 operands: lhs = Expression(29, Add), rhs = Counter(23)
+- expression 22 operands: lhs = Expression(30, Sub), rhs = Counter(21)
+- expression 23 operands: lhs = Counter(20), rhs = Zero
+- expression 24 operands: lhs = Expression(29, Add), rhs = Counter(24)
+- expression 25 operands: lhs = Expression(30, Sub), rhs = Counter(21)
+- expression 26 operands: lhs = Counter(20), rhs = Zero
+- expression 27 operands: lhs = Expression(28, Sub), rhs = Counter(25)
+- expression 28 operands: lhs = Expression(29, Add), rhs = Counter(24)
+- expression 29 operands: lhs = Expression(30, Sub), rhs = Counter(21)
 - expression 30 operands: lhs = Counter(20), rhs = Zero
-- expression 31 operands: lhs = Expression(32, Sub), rhs = Counter(25)
-- expression 32 operands: lhs = Expression(33, Add), rhs = Counter(24)
-- expression 33 operands: lhs = Counter(23), rhs = Expression(34, Sub)
-- expression 34 operands: lhs = Expression(35, Add), rhs = Counter(23)
-- expression 35 operands: lhs = Expression(36, Sub), rhs = Counter(21)
-- expression 36 operands: lhs = Counter(20), rhs = Zero
-- expression 37 operands: lhs = Counter(29), rhs = Expression(61, Sub)
-- expression 38 operands: lhs = Expression(62, Add), rhs = Counter(30)
-- expression 39 operands: lhs = Zero, rhs = Expression(63, Sub)
-- expression 40 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 41 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 42 operands: lhs = Zero, rhs = Expression(63, Sub)
-- expression 43 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 44 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 45 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 46 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 47 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 48 operands: lhs = Expression(62, Add), rhs = Counter(30)
-- expression 49 operands: lhs = Zero, rhs = Expression(63, Sub)
-- expression 50 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 51 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 52 operands: lhs = Expression(60, Add), rhs = Counter(31)
-- expression 53 operands: lhs = Counter(29), rhs = Expression(61, Sub)
-- expression 54 operands: lhs = Expression(62, Add), rhs = Counter(30)
-- expression 55 operands: lhs = Zero, rhs = Expression(63, Sub)
-- expression 56 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 57 operands: lhs = Counter(26), rhs = Counter(27)
-- expression 58 operands: lhs = Expression(59, Sub), rhs = Zero
-- expression 59 operands: lhs = Expression(60, Add), rhs = Counter(31)
-- expression 60 operands: lhs = Counter(29), rhs = Expression(61, Sub)
-- expression 61 operands: lhs = Expression(62, Add), rhs = Counter(30)
-- expression 62 operands: lhs = Zero, rhs = Expression(63, Sub)
-- expression 63 operands: lhs = Expression(64, Sub), rhs = Zero
-- expression 64 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 31 operands: lhs = Counter(29), rhs = Expression(47, Sub)
+- expression 32 operands: lhs = Expression(48, Sub), rhs = Counter(30)
+- expression 33 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 34 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 35 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 36 operands: lhs = Expression(48, Sub), rhs = Zero
+- expression 37 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 38 operands: lhs = Expression(48, Sub), rhs = Counter(30)
+- expression 39 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 40 operands: lhs = Expression(46, Add), rhs = Counter(31)
+- expression 41 operands: lhs = Counter(29), rhs = Expression(47, Sub)
+- expression 42 operands: lhs = Expression(48, Sub), rhs = Counter(30)
+- expression 43 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 44 operands: lhs = Expression(45, Sub), rhs = Zero
+- expression 45 operands: lhs = Expression(46, Add), rhs = Counter(31)
+- expression 46 operands: lhs = Counter(29), rhs = Expression(47, Sub)
+- expression 47 operands: lhs = Expression(48, Sub), rhs = Counter(30)
+- expression 48 operands: lhs = Counter(26), rhs = Counter(27)
 Number of file 0 mappings: 51
 - Code(Counter(0)) at (prev + 8, 1) to (start + 3, 28)
 - Code(Counter(1)) at (prev + 4, 9) to (start + 1, 28)
@@ -187,37 +148,37 @@ Number of file 0 mappings: 51
 - Code(Expression(14, Sub)) at (prev + 3, 9) to (start + 0, 19)
     = (((c17 - Zero) + c18) - c20)
 - Code(Zero) at (prev + 3, 13) to (start + 0, 29)
-- Code(Expression(33, Add)) at (prev + 3, 5) to (start + 0, 15)
-    = (c23 + (((c20 - Zero) + c21) - c23))
-- Code(Expression(35, Add)) at (prev + 1, 12) to (start + 0, 19)
+- Code(Expression(29, Add)) at (prev + 3, 5) to (start + 0, 15)
+    = ((c20 - Zero) + c21)
+- Code(Expression(29, Add)) at (prev + 1, 12) to (start + 0, 19)
     = ((c20 - Zero) + c21)
 - Code(Counter(23)) at (prev + 1, 13) to (start + 0, 19)
-- Code(Expression(34, Sub)) at (prev + 2, 13) to (start + 0, 19)
+- Code(Expression(21, Sub)) at (prev + 2, 13) to (start + 0, 19)
     = (((c20 - Zero) + c21) - c23)
-- Code(Expression(32, Sub)) at (prev + 4, 5) to (start + 2, 19)
-    = ((c23 + (((c20 - Zero) + c21) - c23)) - c24)
+- Code(Expression(28, Sub)) at (prev + 4, 5) to (start + 2, 19)
+    = (((c20 - Zero) + c21) - c24)
 - Code(Counter(25)) at (prev + 3, 13) to (start + 0, 19)
-- Code(Expression(31, Sub)) at (prev + 2, 13) to (start + 0, 19)
-    = (((c23 + (((c20 - Zero) + c21) - c23)) - c24) - c25)
-- Code(Expression(60, Add)) at (prev + 3, 5) to (start + 0, 15)
-    = (c29 + ((Zero + ((c26 - c27) - Zero)) - c30))
+- Code(Expression(27, Sub)) at (prev + 2, 13) to (start + 0, 19)
+    = ((((c20 - Zero) + c21) - c24) - c25)
+- Code(Expression(46, Add)) at (prev + 3, 5) to (start + 0, 15)
+    = (c29 + ((c26 - c27) - c30))
 - Code(Counter(26)) at (prev + 1, 12) to (start + 0, 19)
 - Code(Counter(27)) at (prev + 1, 13) to (start + 3, 14)
 - Code(Counter(29)) at (prev + 4, 13) to (start + 0, 19)
-- Code(Expression(62, Add)) at (prev + 2, 13) to (start + 0, 23)
-    = (Zero + ((c26 - c27) - Zero))
-- Code(Expression(64, Sub)) at (prev + 1, 20) to (start + 0, 27)
+- Code(Expression(48, Sub)) at (prev + 2, 13) to (start + 0, 23)
+    = (c26 - c27)
+- Code(Expression(48, Sub)) at (prev + 1, 20) to (start + 0, 27)
     = (c26 - c27)
 - Code(Zero) at (prev + 1, 21) to (start + 0, 27)
-- Code(Expression(63, Sub)) at (prev + 2, 21) to (start + 0, 27)
+- Code(Expression(36, Sub)) at (prev + 2, 21) to (start + 0, 27)
     = ((c26 - c27) - Zero)
-- Code(Expression(61, Sub)) at (prev + 4, 13) to (start + 0, 19)
-    = ((Zero + ((c26 - c27) - Zero)) - c30)
+- Code(Expression(47, Sub)) at (prev + 4, 13) to (start + 0, 19)
+    = ((c26 - c27) - c30)
 - Code(Counter(31)) at (prev + 3, 9) to (start + 0, 25)
-- Code(Expression(59, Sub)) at (prev + 2, 5) to (start + 0, 15)
-    = ((c29 + ((Zero + ((c26 - c27) - Zero)) - c30)) - c31)
-- Code(Expression(58, Sub)) at (prev + 3, 9) to (start + 0, 34)
-    = (((c29 + ((Zero + ((c26 - c27) - Zero)) - c30)) - c31) - Zero)
+- Code(Expression(45, Sub)) at (prev + 2, 5) to (start + 0, 15)
+    = ((c29 + ((c26 - c27) - c30)) - c31)
+- Code(Expression(44, Sub)) at (prev + 3, 9) to (start + 0, 34)
+    = (((c29 + ((c26 - c27) - c30)) - c31) - Zero)
 - Code(Zero) at (prev + 2, 5) to (start + 0, 15)
 - Code(Zero) at (prev + 3, 9) to (start + 0, 44)
 - Code(Zero) at (prev + 2, 1) to (start + 0, 2)
diff --git a/tests/coverage/lazy_boolean.cov-map b/tests/coverage/lazy_boolean.cov-map
index 03dbb59d26b..8dca205d33f 100644
--- a/tests/coverage/lazy_boolean.cov-map
+++ b/tests/coverage/lazy_boolean.cov-map
@@ -1,219 +1,49 @@
 Function name: lazy_boolean::main
-Raw bytes (636): 0x[01, 01, a4, 01, 01, 05, 09, 8a, 05, 8f, 05, 09, 05, 02, 05, 02, 8f, 05, 09, 05, 02, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 09, 8a, 05, 8f, 05, 09, 05, 02, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 1d, e2, 04, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, df, 04, 21, 1d, e2, 04, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 21, da, 04, df, 04, 21, 1d, e2, 04, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, d7, 04, 25, 21, da, 04, df, 04, 21, 1d, e2, 04, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 25, d2, 04, d7, 04, 25, 21, da, 04, df, 04, 21, 1d, e2, 04, e7, 04, 1d, 19, ea, 04, ef, 04, 19, 15, f2, 04, f7, 04, 15, 11, fa, 04, ff, 04, 11, 0d, 82, 05, 87, 05, 0d, 09, 8a, 05, 8f, 05, 09, 05, 02, 1c, 01, 04, 01, 07, 0f, 05, 07, 10, 04, 06, 02, 04, 06, 00, 07, 87, 05, 02, 09, 00, 11, 8f, 05, 02, 0d, 00, 12, 8a, 05, 02, 0d, 00, 12, ff, 04, 03, 09, 00, 11, 87, 05, 02, 0d, 00, 12, 82, 05, 02, 0d, 00, 12, f7, 04, 02, 09, 00, 11, ff, 04, 00, 14, 00, 19, 11, 00, 1d, 00, 22, ef, 04, 01, 09, 00, 11, f7, 04, 00, 14, 00, 19, 15, 00, 1d, 00, 22, ef, 04, 03, 09, 01, 10, ea, 04, 02, 05, 03, 06, 19, 03, 06, 00, 07, e7, 04, 03, 09, 00, 10, 1d, 01, 05, 03, 06, e2, 04, 05, 05, 03, 06, df, 04, 05, 08, 00, 10, da, 04, 00, 11, 02, 06, 21, 02, 06, 00, 07, d7, 04, 02, 08, 00, 0f, 25, 00, 10, 02, 06, d2, 04, 02, 0c, 02, 06, cf, 04, 03, 01, 00, 02]
+Raw bytes (158): 0x[01, 01, 07, 01, 05, 01, 09, 01, 0d, 01, 19, 01, 1d, 01, 21, 01, 25, 1c, 01, 04, 01, 07, 0f, 05, 07, 10, 04, 06, 02, 04, 06, 00, 07, 01, 02, 09, 00, 11, 01, 02, 0d, 00, 12, 06, 02, 0d, 00, 12, 01, 03, 09, 00, 11, 01, 02, 0d, 00, 12, 0a, 02, 0d, 00, 12, 01, 02, 09, 00, 11, 01, 00, 14, 00, 19, 11, 00, 1d, 00, 22, 01, 01, 09, 00, 11, 01, 00, 14, 00, 19, 15, 00, 1d, 00, 22, 01, 03, 09, 01, 10, 0e, 02, 05, 03, 06, 19, 03, 06, 00, 07, 01, 03, 09, 00, 10, 1d, 01, 05, 03, 06, 12, 05, 05, 03, 06, 01, 05, 08, 00, 10, 16, 00, 11, 02, 06, 21, 02, 06, 00, 07, 01, 02, 08, 00, 0f, 25, 00, 10, 02, 06, 1a, 02, 0c, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 164
+Number of expressions: 7
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 2 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 5 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 7 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 8 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 9 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 10 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 11 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 12 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 13 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 14 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 15 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 16 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 17 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 18 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 19 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 20 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 21 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 22 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 23 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 24 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 25 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 26 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 27 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 28 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 29 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 30 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 31 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 32 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 33 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 34 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 35 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 36 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 37 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 38 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 39 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 40 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 41 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 42 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 43 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 44 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 45 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 46 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 47 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 48 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 49 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 50 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 51 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 52 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 53 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 54 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 55 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 56 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 57 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 58 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 59 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 60 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 61 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 62 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 63 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 64 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 65 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 66 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 67 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 68 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 69 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 70 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 71 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 72 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 73 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 74 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 75 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 76 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 77 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 78 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 79 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 80 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 81 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 82 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 83 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 84 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 85 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 86 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 87 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 88 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 89 operands: lhs = Counter(7), rhs = Expression(152, Sub)
-- expression 90 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 91 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 92 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 93 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 94 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 95 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 96 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 97 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 98 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 99 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 100 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 101 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 102 operands: lhs = Expression(151, Add), rhs = Counter(8)
-- expression 103 operands: lhs = Counter(7), rhs = Expression(152, Sub)
-- expression 104 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 105 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 106 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 107 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 108 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 109 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 110 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 111 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 112 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 113 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 114 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 115 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 116 operands: lhs = Counter(8), rhs = Expression(150, Sub)
-- expression 117 operands: lhs = Expression(151, Add), rhs = Counter(8)
-- expression 118 operands: lhs = Counter(7), rhs = Expression(152, Sub)
-- expression 119 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 120 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 121 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 122 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 123 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 124 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 125 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 126 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 127 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 128 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 129 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 130 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 131 operands: lhs = Expression(149, Add), rhs = Counter(9)
-- expression 132 operands: lhs = Counter(8), rhs = Expression(150, Sub)
-- expression 133 operands: lhs = Expression(151, Add), rhs = Counter(8)
-- expression 134 operands: lhs = Counter(7), rhs = Expression(152, Sub)
-- expression 135 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 136 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 137 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 138 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 139 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 140 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 141 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 142 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 143 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 144 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 145 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 146 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 147 operands: lhs = Counter(9), rhs = Expression(148, Sub)
-- expression 148 operands: lhs = Expression(149, Add), rhs = Counter(9)
-- expression 149 operands: lhs = Counter(8), rhs = Expression(150, Sub)
-- expression 150 operands: lhs = Expression(151, Add), rhs = Counter(8)
-- expression 151 operands: lhs = Counter(7), rhs = Expression(152, Sub)
-- expression 152 operands: lhs = Expression(153, Add), rhs = Counter(7)
-- expression 153 operands: lhs = Counter(6), rhs = Expression(154, Sub)
-- expression 154 operands: lhs = Expression(155, Add), rhs = Counter(6)
-- expression 155 operands: lhs = Counter(5), rhs = Expression(156, Sub)
-- expression 156 operands: lhs = Expression(157, Add), rhs = Counter(5)
-- expression 157 operands: lhs = Counter(4), rhs = Expression(158, Sub)
-- expression 158 operands: lhs = Expression(159, Add), rhs = Counter(4)
-- expression 159 operands: lhs = Counter(3), rhs = Expression(160, Sub)
-- expression 160 operands: lhs = Expression(161, Add), rhs = Counter(3)
-- expression 161 operands: lhs = Counter(2), rhs = Expression(162, Sub)
-- expression 162 operands: lhs = Expression(163, Add), rhs = Counter(2)
-- expression 163 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(0), rhs = Counter(6)
+- expression 4 operands: lhs = Counter(0), rhs = Counter(7)
+- expression 5 operands: lhs = Counter(0), rhs = Counter(8)
+- expression 6 operands: lhs = Counter(0), rhs = Counter(9)
 Number of file 0 mappings: 28
 - Code(Counter(0)) at (prev + 4, 1) to (start + 7, 15)
 - Code(Counter(1)) at (prev + 7, 16) to (start + 4, 6)
 - Code(Expression(0, Sub)) at (prev + 4, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(161, Add)) at (prev + 2, 9) to (start + 0, 17)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
-- Code(Expression(163, Add)) at (prev + 2, 13) to (start + 0, 18)
-    = (c1 + (c0 - c1))
-- Code(Expression(162, Sub)) at (prev + 2, 13) to (start + 0, 18)
-    = ((c1 + (c0 - c1)) - c2)
-- Code(Expression(159, Add)) at (prev + 3, 9) to (start + 0, 17)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
-- Code(Expression(161, Add)) at (prev + 2, 13) to (start + 0, 18)
-    = (c2 + ((c1 + (c0 - c1)) - c2))
-- Code(Expression(160, Sub)) at (prev + 2, 13) to (start + 0, 18)
-    = ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)
-- Code(Expression(157, Add)) at (prev + 2, 9) to (start + 0, 17)
-    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
-- Code(Expression(159, Add)) at (prev + 0, 20) to (start + 0, 25)
-    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 17)
+- Code(Counter(0)) at (prev + 2, 13) to (start + 0, 18)
+- Code(Expression(1, Sub)) at (prev + 2, 13) to (start + 0, 18)
+    = (c0 - c2)
+- Code(Counter(0)) at (prev + 3, 9) to (start + 0, 17)
+- Code(Counter(0)) at (prev + 2, 13) to (start + 0, 18)
+- Code(Expression(2, Sub)) at (prev + 2, 13) to (start + 0, 18)
+    = (c0 - c3)
+- Code(Counter(0)) at (prev + 2, 9) to (start + 0, 17)
+- Code(Counter(0)) at (prev + 0, 20) to (start + 0, 25)
 - Code(Counter(4)) at (prev + 0, 29) to (start + 0, 34)
-- Code(Expression(155, Add)) at (prev + 1, 9) to (start + 0, 17)
-    = (c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5))
-- Code(Expression(157, Add)) at (prev + 0, 20) to (start + 0, 25)
-    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
+- Code(Counter(0)) at (prev + 1, 9) to (start + 0, 17)
+- Code(Counter(0)) at (prev + 0, 20) to (start + 0, 25)
 - Code(Counter(5)) at (prev + 0, 29) to (start + 0, 34)
-- Code(Expression(155, Add)) at (prev + 3, 9) to (start + 1, 16)
-    = (c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5))
-- Code(Expression(154, Sub)) at (prev + 2, 5) to (start + 3, 6)
-    = ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)
+- Code(Counter(0)) at (prev + 3, 9) to (start + 1, 16)
+- Code(Expression(3, Sub)) at (prev + 2, 5) to (start + 3, 6)
+    = (c0 - c6)
 - Code(Counter(6)) at (prev + 3, 6) to (start + 0, 7)
-- Code(Expression(153, Add)) at (prev + 3, 9) to (start + 0, 16)
-    = (c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6))
+- Code(Counter(0)) at (prev + 3, 9) to (start + 0, 16)
 - Code(Counter(7)) at (prev + 1, 5) to (start + 3, 6)
-- Code(Expression(152, Sub)) at (prev + 5, 5) to (start + 3, 6)
-    = ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)
-- Code(Expression(151, Add)) at (prev + 5, 8) to (start + 0, 16)
-    = (c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7))
-- Code(Expression(150, Sub)) at (prev + 0, 17) to (start + 2, 6)
-    = ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)
+- Code(Expression(4, Sub)) at (prev + 5, 5) to (start + 3, 6)
+    = (c0 - c7)
+- Code(Counter(0)) at (prev + 5, 8) to (start + 0, 16)
+- Code(Expression(5, Sub)) at (prev + 0, 17) to (start + 2, 6)
+    = (c0 - c8)
 - Code(Counter(8)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(149, Add)) at (prev + 2, 8) to (start + 0, 15)
-    = (c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8))
+- Code(Counter(0)) at (prev + 2, 8) to (start + 0, 15)
 - Code(Counter(9)) at (prev + 0, 16) to (start + 2, 6)
-- Code(Expression(148, Sub)) at (prev + 2, 12) to (start + 2, 6)
-    = ((c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)) - c9)
-- Code(Expression(147, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c9 + ((c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)) - c9))
+- Code(Expression(6, Sub)) at (prev + 2, 12) to (start + 2, 6)
+    = (c0 - c9)
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/loops_branches.cov-map b/tests/coverage/loops_branches.cov-map
index 8dc35321133..9187dcbd865 100644
--- a/tests/coverage/loops_branches.cov-map
+++ b/tests/coverage/loops_branches.cov-map
@@ -1,57 +1,50 @@
 Function name: <loops_branches::DebugTest as core::fmt::Debug>::fmt
-Raw bytes (249): 0x[01, 01, 31, 05, 00, 00, 02, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, bf, 01, c3, 01, 0d, 00, 11, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, b6, 01, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, b2, 01, 00, b6, 01, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, 00, ae, 01, b2, 01, 00, b6, 01, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, ab, 01, 11, 00, ae, 01, b2, 01, 00, b6, 01, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, a3, 01, 19, 25, a6, 01, ab, 01, 11, 00, ae, 01, b2, 01, 00, b6, 01, 00, bb, 01, 19, bf, 01, c3, 01, 0d, 00, 11, 00, 14, 01, 09, 05, 01, 10, 05, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 02, 01, 0e, 00, 0f, 07, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, 00, 01, 10, 01, 0a, b6, 01, 03, 0d, 00, 0e, bb, 01, 00, 12, 00, 17, b6, 01, 01, 10, 00, 14, b2, 01, 01, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, ae, 01, 01, 12, 00, 13, ab, 01, 01, 11, 00, 22, a6, 01, 00, 22, 00, 23, 00, 01, 14, 01, 0e, 19, 03, 09, 00, 0f, 9f, 01, 01, 05, 00, 06]
+Raw bytes (228): 0x[01, 01, 2a, 05, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, a3, 01, a7, 01, 0d, 00, 11, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 9a, 01, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 96, 01, 00, 9a, 01, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 9a, 01, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 96, 01, 11, 9a, 01, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 8f, 01, 19, 25, 92, 01, 96, 01, 11, 9a, 01, 00, 9f, 01, 19, a3, 01, a7, 01, 0d, 00, 11, 00, 14, 01, 09, 05, 01, 10, 05, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 02, 01, 0e, 00, 0f, 05, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, 00, 01, 10, 01, 0a, 9a, 01, 03, 0d, 00, 0e, 9f, 01, 00, 12, 00, 17, 9a, 01, 01, 10, 00, 14, 96, 01, 01, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, 46, 01, 12, 00, 13, 96, 01, 01, 11, 00, 22, 92, 01, 00, 22, 00, 23, 00, 01, 14, 01, 0e, 19, 03, 09, 00, 0f, 8b, 01, 01, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 49
+Number of expressions: 42
 - expression 0 operands: lhs = Counter(1), rhs = Zero
-- expression 1 operands: lhs = Zero, rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 3 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 4 operands: lhs = Counter(3), rhs = Zero
-- expression 5 operands: lhs = Counter(4), rhs = Zero
-- expression 6 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 7 operands: lhs = Counter(3), rhs = Zero
-- expression 8 operands: lhs = Counter(4), rhs = Zero
-- expression 9 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 10 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 11 operands: lhs = Counter(3), rhs = Zero
-- expression 12 operands: lhs = Counter(4), rhs = Zero
-- expression 13 operands: lhs = Expression(45, Sub), rhs = Zero
-- expression 14 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 15 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 16 operands: lhs = Counter(3), rhs = Zero
-- expression 17 operands: lhs = Counter(4), rhs = Zero
-- expression 18 operands: lhs = Expression(44, Sub), rhs = Zero
-- expression 19 operands: lhs = Expression(45, Sub), rhs = Zero
-- expression 20 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 21 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 22 operands: lhs = Counter(3), rhs = Zero
-- expression 23 operands: lhs = Counter(4), rhs = Zero
-- expression 24 operands: lhs = Zero, rhs = Expression(43, Sub)
-- expression 25 operands: lhs = Expression(44, Sub), rhs = Zero
-- expression 26 operands: lhs = Expression(45, Sub), rhs = Zero
-- expression 27 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 28 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 29 operands: lhs = Counter(3), rhs = Zero
-- expression 30 operands: lhs = Counter(4), rhs = Zero
-- expression 31 operands: lhs = Expression(42, Add), rhs = Counter(4)
-- expression 32 operands: lhs = Zero, rhs = Expression(43, Sub)
-- expression 33 operands: lhs = Expression(44, Sub), rhs = Zero
-- expression 34 operands: lhs = Expression(45, Sub), rhs = Zero
-- expression 35 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 36 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 37 operands: lhs = Counter(3), rhs = Zero
-- expression 38 operands: lhs = Counter(4), rhs = Zero
-- expression 39 operands: lhs = Expression(40, Add), rhs = Counter(6)
-- expression 40 operands: lhs = Counter(9), rhs = Expression(41, Sub)
-- expression 41 operands: lhs = Expression(42, Add), rhs = Counter(4)
-- expression 42 operands: lhs = Zero, rhs = Expression(43, Sub)
-- expression 43 operands: lhs = Expression(44, Sub), rhs = Zero
-- expression 44 operands: lhs = Expression(45, Sub), rhs = Zero
-- expression 45 operands: lhs = Expression(46, Add), rhs = Counter(6)
-- expression 46 operands: lhs = Expression(47, Add), rhs = Expression(48, Add)
-- expression 47 operands: lhs = Counter(3), rhs = Zero
-- expression 48 operands: lhs = Counter(4), rhs = Zero
+- expression 1 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 2 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 3 operands: lhs = Counter(3), rhs = Zero
+- expression 4 operands: lhs = Counter(4), rhs = Zero
+- expression 5 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 6 operands: lhs = Counter(3), rhs = Zero
+- expression 7 operands: lhs = Counter(4), rhs = Zero
+- expression 8 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 9 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 10 operands: lhs = Counter(3), rhs = Zero
+- expression 11 operands: lhs = Counter(4), rhs = Zero
+- expression 12 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 13 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 14 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 15 operands: lhs = Counter(3), rhs = Zero
+- expression 16 operands: lhs = Counter(4), rhs = Zero
+- expression 17 operands: lhs = Expression(37, Sub), rhs = Zero
+- expression 18 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 19 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 20 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 21 operands: lhs = Counter(3), rhs = Zero
+- expression 22 operands: lhs = Counter(4), rhs = Zero
+- expression 23 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 24 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 25 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 26 operands: lhs = Counter(3), rhs = Zero
+- expression 27 operands: lhs = Counter(4), rhs = Zero
+- expression 28 operands: lhs = Expression(37, Sub), rhs = Counter(4)
+- expression 29 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 30 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 31 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 32 operands: lhs = Counter(3), rhs = Zero
+- expression 33 operands: lhs = Counter(4), rhs = Zero
+- expression 34 operands: lhs = Expression(35, Add), rhs = Counter(6)
+- expression 35 operands: lhs = Counter(9), rhs = Expression(36, Sub)
+- expression 36 operands: lhs = Expression(37, Sub), rhs = Counter(4)
+- expression 37 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 38 operands: lhs = Expression(39, Add), rhs = Counter(6)
+- expression 39 operands: lhs = Expression(40, Add), rhs = Expression(41, Add)
+- expression 40 operands: lhs = Counter(3), rhs = Zero
+- expression 41 operands: lhs = Counter(4), rhs = Zero
 Number of file 0 mappings: 20
 - Code(Counter(0)) at (prev + 9, 5) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 2, 16) to (start + 0, 21)
@@ -59,87 +52,78 @@ Number of file 0 mappings: 20
 - Code(Zero) at (prev + 0, 28) to (start + 0, 30)
 - Code(Expression(0, Sub)) at (prev + 1, 14) to (start + 0, 15)
     = (c1 - Zero)
-- Code(Expression(1, Add)) at (prev + 1, 13) to (start + 0, 30)
-    = (Zero + (c1 - Zero))
+- Code(Counter(1)) at (prev + 1, 13) to (start + 0, 30)
 - Code(Counter(9)) at (prev + 0, 30) to (start + 0, 31)
 - Code(Zero) at (prev + 1, 16) to (start + 1, 10)
-- Code(Expression(45, Sub)) at (prev + 3, 13) to (start + 0, 14)
+- Code(Expression(38, Sub)) at (prev + 3, 13) to (start + 0, 14)
     = (((c3 + Zero) + (c4 + Zero)) - c6)
-- Code(Expression(46, Add)) at (prev + 0, 18) to (start + 0, 23)
+- Code(Expression(39, Add)) at (prev + 0, 18) to (start + 0, 23)
     = ((c3 + Zero) + (c4 + Zero))
-- Code(Expression(45, Sub)) at (prev + 1, 16) to (start + 0, 20)
+- Code(Expression(38, Sub)) at (prev + 1, 16) to (start + 0, 20)
     = (((c3 + Zero) + (c4 + Zero)) - c6)
-- Code(Expression(44, Sub)) at (prev + 1, 20) to (start + 0, 25)
+- Code(Expression(37, Sub)) at (prev + 1, 20) to (start + 0, 25)
     = ((((c3 + Zero) + (c4 + Zero)) - c6) - Zero)
 - Code(Zero) at (prev + 1, 27) to (start + 0, 31)
 - Code(Zero) at (prev + 0, 32) to (start + 0, 34)
-- Code(Expression(43, Sub)) at (prev + 1, 18) to (start + 0, 19)
+- Code(Expression(17, Sub)) at (prev + 1, 18) to (start + 0, 19)
     = (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - Zero)
-- Code(Expression(42, Add)) at (prev + 1, 17) to (start + 0, 34)
-    = (Zero + (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - Zero))
-- Code(Expression(41, Sub)) at (prev + 0, 34) to (start + 0, 35)
-    = ((Zero + (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - Zero)) - c4)
+- Code(Expression(37, Sub)) at (prev + 1, 17) to (start + 0, 34)
+    = ((((c3 + Zero) + (c4 + Zero)) - c6) - Zero)
+- Code(Expression(36, Sub)) at (prev + 0, 34) to (start + 0, 35)
+    = (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - c4)
 - Code(Zero) at (prev + 1, 20) to (start + 1, 14)
 - Code(Counter(6)) at (prev + 3, 9) to (start + 0, 15)
-- Code(Expression(39, Add)) at (prev + 1, 5) to (start + 0, 6)
-    = ((c9 + ((Zero + (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - Zero)) - c4)) + c6)
+- Code(Expression(34, Add)) at (prev + 1, 5) to (start + 0, 6)
+    = ((c9 + (((((c3 + Zero) + (c4 + Zero)) - c6) - Zero) - c4)) + c6)
 
 Function name: <loops_branches::DisplayTest as core::fmt::Display>::fmt
-Raw bytes (253): 0x[01, 01, 33, 01, 00, 02, 00, 00, 0e, 02, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, c7, 01, cb, 01, 00, 0d, 00, 15, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, be, 01, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, ba, 01, 00, be, 01, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, 00, b6, 01, ba, 01, 00, be, 01, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, b3, 01, 15, 00, b6, 01, ba, 01, 00, be, 01, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, ab, 01, 25, ae, 01, 19, b3, 01, 15, 00, b6, 01, ba, 01, 00, be, 01, 00, c3, 01, 19, c7, 01, cb, 01, 00, 0d, 00, 15, 14, 01, 22, 05, 01, 11, 00, 01, 12, 01, 0a, 02, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 0e, 01, 0e, 00, 0f, 0b, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, be, 01, 02, 0d, 00, 0e, c3, 01, 00, 12, 00, 17, be, 01, 01, 10, 00, 15, 00, 00, 16, 01, 0e, ba, 01, 02, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, b6, 01, 01, 12, 00, 13, b3, 01, 01, 11, 00, 22, ae, 01, 00, 22, 00, 23, 19, 03, 09, 00, 0f, a7, 01, 01, 05, 00, 06]
+Raw bytes (230): 0x[01, 01, 2b, 01, 00, 02, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, a7, 01, ab, 01, 00, 0d, 00, 15, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 9e, 01, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 9a, 01, 00, 9e, 01, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 9e, 01, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 9a, 01, 15, 9e, 01, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 93, 01, 25, 96, 01, 19, 9a, 01, 15, 9e, 01, 00, a3, 01, 19, a7, 01, ab, 01, 00, 0d, 00, 15, 14, 01, 22, 05, 01, 11, 00, 01, 12, 01, 0a, 02, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 06, 01, 0e, 00, 0f, 02, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, 9e, 01, 02, 0d, 00, 0e, a3, 01, 00, 12, 00, 17, 9e, 01, 01, 10, 00, 15, 00, 00, 16, 01, 0e, 9a, 01, 02, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, 4a, 01, 12, 00, 13, 9a, 01, 01, 11, 00, 22, 96, 01, 00, 22, 00, 23, 19, 03, 09, 00, 0f, 8f, 01, 01, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 51
+Number of expressions: 43
 - expression 0 operands: lhs = Counter(0), rhs = Zero
 - expression 1 operands: lhs = Expression(0, Sub), rhs = Zero
-- expression 2 operands: lhs = Zero, rhs = Expression(3, Sub)
-- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
-- expression 4 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 5 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 6 operands: lhs = Zero, rhs = Counter(3)
-- expression 7 operands: lhs = Zero, rhs = Counter(5)
-- expression 8 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 9 operands: lhs = Zero, rhs = Counter(3)
-- expression 10 operands: lhs = Zero, rhs = Counter(5)
-- expression 11 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 12 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 13 operands: lhs = Zero, rhs = Counter(3)
-- expression 14 operands: lhs = Zero, rhs = Counter(5)
-- expression 15 operands: lhs = Expression(47, Sub), rhs = Zero
-- expression 16 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 17 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 18 operands: lhs = Zero, rhs = Counter(3)
-- expression 19 operands: lhs = Zero, rhs = Counter(5)
-- expression 20 operands: lhs = Expression(46, Sub), rhs = Zero
-- expression 21 operands: lhs = Expression(47, Sub), rhs = Zero
-- expression 22 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 23 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 24 operands: lhs = Zero, rhs = Counter(3)
-- expression 25 operands: lhs = Zero, rhs = Counter(5)
-- expression 26 operands: lhs = Zero, rhs = Expression(45, Sub)
-- expression 27 operands: lhs = Expression(46, Sub), rhs = Zero
-- expression 28 operands: lhs = Expression(47, Sub), rhs = Zero
-- expression 29 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 30 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 31 operands: lhs = Zero, rhs = Counter(3)
-- expression 32 operands: lhs = Zero, rhs = Counter(5)
-- expression 33 operands: lhs = Expression(44, Add), rhs = Counter(5)
-- expression 34 operands: lhs = Zero, rhs = Expression(45, Sub)
-- expression 35 operands: lhs = Expression(46, Sub), rhs = Zero
-- expression 36 operands: lhs = Expression(47, Sub), rhs = Zero
-- expression 37 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 38 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 39 operands: lhs = Zero, rhs = Counter(3)
-- expression 40 operands: lhs = Zero, rhs = Counter(5)
-- expression 41 operands: lhs = Expression(42, Add), rhs = Counter(9)
-- expression 42 operands: lhs = Expression(43, Sub), rhs = Counter(6)
-- expression 43 operands: lhs = Expression(44, Add), rhs = Counter(5)
-- expression 44 operands: lhs = Zero, rhs = Expression(45, Sub)
-- expression 45 operands: lhs = Expression(46, Sub), rhs = Zero
-- expression 46 operands: lhs = Expression(47, Sub), rhs = Zero
-- expression 47 operands: lhs = Expression(48, Add), rhs = Counter(6)
-- expression 48 operands: lhs = Expression(49, Add), rhs = Expression(50, Add)
-- expression 49 operands: lhs = Zero, rhs = Counter(3)
-- expression 50 operands: lhs = Zero, rhs = Counter(5)
+- expression 2 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 3 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 4 operands: lhs = Zero, rhs = Counter(3)
+- expression 5 operands: lhs = Zero, rhs = Counter(5)
+- expression 6 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 7 operands: lhs = Zero, rhs = Counter(3)
+- expression 8 operands: lhs = Zero, rhs = Counter(5)
+- expression 9 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 10 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 11 operands: lhs = Zero, rhs = Counter(3)
+- expression 12 operands: lhs = Zero, rhs = Counter(5)
+- expression 13 operands: lhs = Expression(39, Sub), rhs = Zero
+- expression 14 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 15 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 16 operands: lhs = Zero, rhs = Counter(3)
+- expression 17 operands: lhs = Zero, rhs = Counter(5)
+- expression 18 operands: lhs = Expression(38, Sub), rhs = Zero
+- expression 19 operands: lhs = Expression(39, Sub), rhs = Zero
+- expression 20 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 21 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 22 operands: lhs = Zero, rhs = Counter(3)
+- expression 23 operands: lhs = Zero, rhs = Counter(5)
+- expression 24 operands: lhs = Expression(39, Sub), rhs = Zero
+- expression 25 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 26 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 27 operands: lhs = Zero, rhs = Counter(3)
+- expression 28 operands: lhs = Zero, rhs = Counter(5)
+- expression 29 operands: lhs = Expression(38, Sub), rhs = Counter(5)
+- expression 30 operands: lhs = Expression(39, Sub), rhs = Zero
+- expression 31 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 32 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 33 operands: lhs = Zero, rhs = Counter(3)
+- expression 34 operands: lhs = Zero, rhs = Counter(5)
+- expression 35 operands: lhs = Expression(36, Add), rhs = Counter(9)
+- expression 36 operands: lhs = Expression(37, Sub), rhs = Counter(6)
+- expression 37 operands: lhs = Expression(38, Sub), rhs = Counter(5)
+- expression 38 operands: lhs = Expression(39, Sub), rhs = Zero
+- expression 39 operands: lhs = Expression(40, Add), rhs = Counter(6)
+- expression 40 operands: lhs = Expression(41, Add), rhs = Expression(42, Add)
+- expression 41 operands: lhs = Zero, rhs = Counter(3)
+- expression 42 operands: lhs = Zero, rhs = Counter(5)
 Number of file 0 mappings: 20
 - Code(Counter(0)) at (prev + 34, 5) to (start + 1, 17)
 - Code(Zero) at (prev + 1, 18) to (start + 1, 10)
@@ -147,31 +131,31 @@ Number of file 0 mappings: 20
     = (c0 - Zero)
 - Code(Zero) at (prev + 1, 23) to (start + 0, 27)
 - Code(Zero) at (prev + 0, 28) to (start + 0, 30)
-- Code(Expression(3, Sub)) at (prev + 1, 14) to (start + 0, 15)
+- Code(Expression(1, Sub)) at (prev + 1, 14) to (start + 0, 15)
     = ((c0 - Zero) - Zero)
-- Code(Expression(2, Add)) at (prev + 1, 13) to (start + 0, 30)
-    = (Zero + ((c0 - Zero) - Zero))
+- Code(Expression(0, Sub)) at (prev + 1, 13) to (start + 0, 30)
+    = (c0 - Zero)
 - Code(Counter(9)) at (prev + 0, 30) to (start + 0, 31)
-- Code(Expression(47, Sub)) at (prev + 2, 13) to (start + 0, 14)
+- Code(Expression(39, Sub)) at (prev + 2, 13) to (start + 0, 14)
     = (((Zero + c3) + (Zero + c5)) - c6)
-- Code(Expression(48, Add)) at (prev + 0, 18) to (start + 0, 23)
+- Code(Expression(40, Add)) at (prev + 0, 18) to (start + 0, 23)
     = ((Zero + c3) + (Zero + c5))
-- Code(Expression(47, Sub)) at (prev + 1, 16) to (start + 0, 21)
+- Code(Expression(39, Sub)) at (prev + 1, 16) to (start + 0, 21)
     = (((Zero + c3) + (Zero + c5)) - c6)
 - Code(Zero) at (prev + 0, 22) to (start + 1, 14)
-- Code(Expression(46, Sub)) at (prev + 2, 20) to (start + 0, 25)
+- Code(Expression(38, Sub)) at (prev + 2, 20) to (start + 0, 25)
     = ((((Zero + c3) + (Zero + c5)) - c6) - Zero)
 - Code(Zero) at (prev + 1, 27) to (start + 0, 31)
 - Code(Zero) at (prev + 0, 32) to (start + 0, 34)
-- Code(Expression(45, Sub)) at (prev + 1, 18) to (start + 0, 19)
+- Code(Expression(18, Sub)) at (prev + 1, 18) to (start + 0, 19)
     = (((((Zero + c3) + (Zero + c5)) - c6) - Zero) - Zero)
-- Code(Expression(44, Add)) at (prev + 1, 17) to (start + 0, 34)
-    = (Zero + (((((Zero + c3) + (Zero + c5)) - c6) - Zero) - Zero))
-- Code(Expression(43, Sub)) at (prev + 0, 34) to (start + 0, 35)
-    = ((Zero + (((((Zero + c3) + (Zero + c5)) - c6) - Zero) - Zero)) - c5)
+- Code(Expression(38, Sub)) at (prev + 1, 17) to (start + 0, 34)
+    = ((((Zero + c3) + (Zero + c5)) - c6) - Zero)
+- Code(Expression(37, Sub)) at (prev + 0, 34) to (start + 0, 35)
+    = (((((Zero + c3) + (Zero + c5)) - c6) - Zero) - c5)
 - Code(Counter(6)) at (prev + 3, 9) to (start + 0, 15)
-- Code(Expression(41, Add)) at (prev + 1, 5) to (start + 0, 6)
-    = ((((Zero + (((((Zero + c3) + (Zero + c5)) - c6) - Zero) - Zero)) - c5) + c6) + c9)
+- Code(Expression(35, Add)) at (prev + 1, 5) to (start + 0, 6)
+    = (((((((Zero + c3) + (Zero + c5)) - c6) - Zero) - c5) + c6) + c9)
 
 Function name: loops_branches::main
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 37, 01, 05, 02]
diff --git a/tests/coverage/match_or_pattern.cov-map b/tests/coverage/match_or_pattern.cov-map
index d63407a99c3..60b7024533d 100644
--- a/tests/coverage/match_or_pattern.cov-map
+++ b/tests/coverage/match_or_pattern.cov-map
@@ -1,83 +1,75 @@
 Function name: match_or_pattern::main
-Raw bytes (202): 0x[01, 01, 23, 01, 05, 05, 02, 09, 0d, 2f, 11, 09, 0d, 2b, 15, 2f, 11, 09, 0d, 15, 26, 2b, 15, 2f, 11, 09, 0d, 19, 1d, 57, 21, 19, 1d, 53, 25, 57, 21, 19, 1d, 25, 4e, 53, 25, 57, 21, 19, 1d, 29, 2d, 7f, 31, 29, 2d, 7b, 35, 7f, 31, 29, 2d, 35, 76, 7b, 35, 7f, 31, 29, 2d, 39, 3d, 8b, 01, 41, 39, 3d, 19, 01, 01, 01, 08, 0f, 05, 08, 10, 03, 06, 02, 03, 06, 00, 07, 07, 01, 0b, 00, 11, 11, 03, 1b, 00, 1d, 2f, 01, 0e, 00, 10, 2b, 02, 08, 00, 0f, 15, 00, 10, 03, 06, 26, 03, 06, 00, 07, 23, 01, 0b, 00, 11, 21, 01, 1b, 00, 1d, 57, 01, 0e, 00, 10, 53, 02, 08, 00, 0f, 25, 00, 10, 03, 06, 4e, 03, 06, 00, 07, 4b, 01, 0b, 00, 11, 31, 01, 1b, 00, 1d, 7f, 01, 0e, 00, 10, 7b, 02, 08, 00, 0f, 35, 00, 10, 03, 06, 76, 03, 06, 00, 07, 73, 01, 0b, 00, 11, 41, 01, 1b, 00, 1d, 8b, 01, 01, 0e, 00, 10, 87, 01, 02, 01, 00, 02]
+Raw bytes (185): 0x[01, 01, 1c, 01, 05, 09, 0d, 23, 11, 09, 0d, 1f, 15, 23, 11, 09, 0d, 23, 11, 09, 0d, 19, 1d, 43, 21, 19, 1d, 3f, 25, 43, 21, 19, 1d, 43, 21, 19, 1d, 29, 2d, 63, 31, 29, 2d, 5f, 35, 63, 31, 29, 2d, 63, 31, 29, 2d, 39, 3d, 6f, 41, 39, 3d, 19, 01, 01, 01, 08, 0f, 05, 08, 10, 03, 06, 02, 03, 06, 00, 07, 01, 01, 0b, 00, 11, 11, 03, 1b, 00, 1d, 23, 01, 0e, 00, 10, 1f, 02, 08, 00, 0f, 15, 00, 10, 03, 06, 12, 03, 06, 00, 07, 1f, 01, 0b, 00, 11, 21, 01, 1b, 00, 1d, 43, 01, 0e, 00, 10, 3f, 02, 08, 00, 0f, 25, 00, 10, 03, 06, 32, 03, 06, 00, 07, 3f, 01, 0b, 00, 11, 31, 01, 1b, 00, 1d, 63, 01, 0e, 00, 10, 5f, 02, 08, 00, 0f, 35, 00, 10, 03, 06, 52, 03, 06, 00, 07, 5f, 01, 0b, 00, 11, 41, 01, 1b, 00, 1d, 6f, 01, 0e, 00, 10, 6b, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 35
+Number of expressions: 28
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 3 operands: lhs = Expression(11, Add), rhs = Counter(4)
-- expression 4 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 5 operands: lhs = Expression(10, Add), rhs = Counter(5)
-- expression 6 operands: lhs = Expression(11, Add), rhs = Counter(4)
-- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 8 operands: lhs = Counter(5), rhs = Expression(9, Sub)
-- expression 9 operands: lhs = Expression(10, Add), rhs = Counter(5)
-- expression 10 operands: lhs = Expression(11, Add), rhs = Counter(4)
-- expression 11 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 12 operands: lhs = Counter(6), rhs = Counter(7)
-- expression 13 operands: lhs = Expression(21, Add), rhs = Counter(8)
+- expression 1 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 2 operands: lhs = Expression(8, Add), rhs = Counter(4)
+- expression 3 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 4 operands: lhs = Expression(7, Add), rhs = Counter(5)
+- expression 5 operands: lhs = Expression(8, Add), rhs = Counter(4)
+- expression 6 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 7 operands: lhs = Expression(8, Add), rhs = Counter(4)
+- expression 8 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 9 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 10 operands: lhs = Expression(16, Add), rhs = Counter(8)
+- expression 11 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 12 operands: lhs = Expression(15, Add), rhs = Counter(9)
+- expression 13 operands: lhs = Expression(16, Add), rhs = Counter(8)
 - expression 14 operands: lhs = Counter(6), rhs = Counter(7)
-- expression 15 operands: lhs = Expression(20, Add), rhs = Counter(9)
-- expression 16 operands: lhs = Expression(21, Add), rhs = Counter(8)
-- expression 17 operands: lhs = Counter(6), rhs = Counter(7)
-- expression 18 operands: lhs = Counter(9), rhs = Expression(19, Sub)
-- expression 19 operands: lhs = Expression(20, Add), rhs = Counter(9)
-- expression 20 operands: lhs = Expression(21, Add), rhs = Counter(8)
-- expression 21 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 15 operands: lhs = Expression(16, Add), rhs = Counter(8)
+- expression 16 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 17 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 18 operands: lhs = Expression(24, Add), rhs = Counter(12)
+- expression 19 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 20 operands: lhs = Expression(23, Add), rhs = Counter(13)
+- expression 21 operands: lhs = Expression(24, Add), rhs = Counter(12)
 - expression 22 operands: lhs = Counter(10), rhs = Counter(11)
-- expression 23 operands: lhs = Expression(31, Add), rhs = Counter(12)
+- expression 23 operands: lhs = Expression(24, Add), rhs = Counter(12)
 - expression 24 operands: lhs = Counter(10), rhs = Counter(11)
-- expression 25 operands: lhs = Expression(30, Add), rhs = Counter(13)
-- expression 26 operands: lhs = Expression(31, Add), rhs = Counter(12)
-- expression 27 operands: lhs = Counter(10), rhs = Counter(11)
-- expression 28 operands: lhs = Counter(13), rhs = Expression(29, Sub)
-- expression 29 operands: lhs = Expression(30, Add), rhs = Counter(13)
-- expression 30 operands: lhs = Expression(31, Add), rhs = Counter(12)
-- expression 31 operands: lhs = Counter(10), rhs = Counter(11)
-- expression 32 operands: lhs = Counter(14), rhs = Counter(15)
-- expression 33 operands: lhs = Expression(34, Add), rhs = Counter(16)
-- expression 34 operands: lhs = Counter(14), rhs = Counter(15)
+- expression 25 operands: lhs = Counter(14), rhs = Counter(15)
+- expression 26 operands: lhs = Expression(27, Add), rhs = Counter(16)
+- expression 27 operands: lhs = Counter(14), rhs = Counter(15)
 Number of file 0 mappings: 25
 - Code(Counter(0)) at (prev + 1, 1) to (start + 8, 15)
 - Code(Counter(1)) at (prev + 8, 16) to (start + 3, 6)
 - Code(Expression(0, Sub)) at (prev + 3, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 11) to (start + 0, 17)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 11) to (start + 0, 17)
 - Code(Counter(4)) at (prev + 3, 27) to (start + 0, 29)
-- Code(Expression(11, Add)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(8, Add)) at (prev + 1, 14) to (start + 0, 16)
     = (c2 + c3)
-- Code(Expression(10, Add)) at (prev + 2, 8) to (start + 0, 15)
+- Code(Expression(7, Add)) at (prev + 2, 8) to (start + 0, 15)
     = ((c2 + c3) + c4)
 - Code(Counter(5)) at (prev + 0, 16) to (start + 3, 6)
-- Code(Expression(9, Sub)) at (prev + 3, 6) to (start + 0, 7)
+- Code(Expression(4, Sub)) at (prev + 3, 6) to (start + 0, 7)
     = (((c2 + c3) + c4) - c5)
-- Code(Expression(8, Add)) at (prev + 1, 11) to (start + 0, 17)
-    = (c5 + (((c2 + c3) + c4) - c5))
+- Code(Expression(7, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = ((c2 + c3) + c4)
 - Code(Counter(8)) at (prev + 1, 27) to (start + 0, 29)
-- Code(Expression(21, Add)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(16, Add)) at (prev + 1, 14) to (start + 0, 16)
     = (c6 + c7)
-- Code(Expression(20, Add)) at (prev + 2, 8) to (start + 0, 15)
+- Code(Expression(15, Add)) at (prev + 2, 8) to (start + 0, 15)
     = ((c6 + c7) + c8)
 - Code(Counter(9)) at (prev + 0, 16) to (start + 3, 6)
-- Code(Expression(19, Sub)) at (prev + 3, 6) to (start + 0, 7)
+- Code(Expression(12, Sub)) at (prev + 3, 6) to (start + 0, 7)
     = (((c6 + c7) + c8) - c9)
-- Code(Expression(18, Add)) at (prev + 1, 11) to (start + 0, 17)
-    = (c9 + (((c6 + c7) + c8) - c9))
+- Code(Expression(15, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = ((c6 + c7) + c8)
 - Code(Counter(12)) at (prev + 1, 27) to (start + 0, 29)
-- Code(Expression(31, Add)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(24, Add)) at (prev + 1, 14) to (start + 0, 16)
     = (c10 + c11)
-- Code(Expression(30, Add)) at (prev + 2, 8) to (start + 0, 15)
+- Code(Expression(23, Add)) at (prev + 2, 8) to (start + 0, 15)
     = ((c10 + c11) + c12)
 - Code(Counter(13)) at (prev + 0, 16) to (start + 3, 6)
-- Code(Expression(29, Sub)) at (prev + 3, 6) to (start + 0, 7)
+- Code(Expression(20, Sub)) at (prev + 3, 6) to (start + 0, 7)
     = (((c10 + c11) + c12) - c13)
-- Code(Expression(28, Add)) at (prev + 1, 11) to (start + 0, 17)
-    = (c13 + (((c10 + c11) + c12) - c13))
+- Code(Expression(23, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = ((c10 + c11) + c12)
 - Code(Counter(16)) at (prev + 1, 27) to (start + 0, 29)
-- Code(Expression(34, Add)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(27, Add)) at (prev + 1, 14) to (start + 0, 16)
     = (c14 + c15)
-- Code(Expression(33, Add)) at (prev + 2, 1) to (start + 0, 2)
+- Code(Expression(26, Add)) at (prev + 2, 1) to (start + 0, 2)
     = ((c14 + c15) + c16)
 
diff --git a/tests/coverage/no_cov_crate.cov-map b/tests/coverage/no_cov_crate.cov-map
index 05b6448bbd2..e623f6480b9 100644
--- a/tests/coverage/no_cov_crate.cov-map
+++ b/tests/coverage/no_cov_crate.cov-map
@@ -47,32 +47,28 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 63, 5) to (start + 11, 6)
 
 Function name: no_cov_crate::nested_fns::outer_both_covered::inner
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 43, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 07, 03, 09, 00, 0a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 43, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 01, 03, 09, 00, 0a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 67, 9) to (start + 1, 23)
 - Code(Counter(1)) at (prev + 1, 24) to (start + 2, 14)
 - Code(Expression(0, Sub)) at (prev + 2, 20) to (start + 2, 14)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 9) to (start + 0, 10)
 
 Function name: no_cov_crate::nested_fns::outer_not_covered::inner
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 26, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 07, 03, 09, 00, 0a]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 26, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 01, 03, 09, 00, 0a]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 38, 9) to (start + 1, 23)
 - Code(Counter(1)) at (prev + 1, 24) to (start + 2, 14)
 - Code(Expression(0, Sub)) at (prev + 2, 20) to (start + 2, 14)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 3, 9) to (start + 0, 10)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 3, 9) to (start + 0, 10)
 
diff --git a/tests/coverage/overflow.cov-map b/tests/coverage/overflow.cov-map
index 39a5c05f879..cb31f3d1f3e 100644
--- a/tests/coverage/overflow.cov-map
+++ b/tests/coverage/overflow.cov-map
@@ -27,17 +27,15 @@ Number of file 0 mappings: 9
 - Code(Counter(4)) at (prev + 2, 5) to (start + 1, 2)
 
 Function name: overflow::might_overflow
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 05, 01, 01, 12, 05, 01, 13, 02, 06, 02, 02, 06, 00, 07, 07, 01, 09, 05, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 05, 01, 01, 12, 05, 01, 13, 02, 06, 02, 02, 06, 00, 07, 01, 01, 09, 05, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 5, 1) to (start + 1, 18)
 - Code(Counter(1)) at (prev + 1, 19) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 5, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 9) to (start + 5, 2)
 
diff --git a/tests/coverage/simple_loop.cov-map b/tests/coverage/simple_loop.cov-map
index 0a342cb3673..541f7bf8fbd 100644
--- a/tests/coverage/simple_loop.cov-map
+++ b/tests/coverage/simple_loop.cov-map
@@ -1,27 +1,18 @@
 Function name: simple_loop::main
-Raw bytes (57): 0x[01, 01, 09, 01, 05, 23, 09, 05, 02, 1f, 09, 23, 09, 05, 02, 1f, 09, 23, 09, 05, 02, 07, 01, 04, 01, 09, 10, 05, 0a, 05, 05, 06, 02, 05, 06, 00, 07, 1f, 05, 0d, 02, 0e, 1a, 04, 0d, 00, 12, 09, 02, 0a, 03, 0a, 1a, 06, 01, 00, 02]
+Raw bytes (43): 0x[01, 01, 02, 01, 05, 01, 09, 07, 01, 04, 01, 09, 10, 05, 0a, 05, 05, 06, 02, 05, 06, 00, 07, 07, 05, 0d, 02, 0e, 01, 04, 0d, 00, 12, 09, 02, 0a, 03, 0a, 01, 06, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 9
+Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Expression(8, Add), rhs = Counter(2)
-- expression 2 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 3 operands: lhs = Expression(7, Add), rhs = Counter(2)
-- expression 4 operands: lhs = Expression(8, Add), rhs = Counter(2)
-- expression 5 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 6 operands: lhs = Expression(7, Add), rhs = Counter(2)
-- expression 7 operands: lhs = Expression(8, Add), rhs = Counter(2)
-- expression 8 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(2)
 Number of file 0 mappings: 7
 - Code(Counter(0)) at (prev + 4, 1) to (start + 9, 16)
 - Code(Counter(1)) at (prev + 10, 5) to (start + 5, 6)
 - Code(Expression(0, Sub)) at (prev + 5, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(7, Add)) at (prev + 5, 13) to (start + 2, 14)
-    = ((c1 + (c0 - c1)) + c2)
-- Code(Expression(6, Sub)) at (prev + 4, 13) to (start + 0, 18)
-    = (((c1 + (c0 - c1)) + c2) - c2)
+- Code(Expression(1, Add)) at (prev + 5, 13) to (start + 2, 14)
+    = (c0 + c2)
+- Code(Counter(0)) at (prev + 4, 13) to (start + 0, 18)
 - Code(Counter(2)) at (prev + 2, 10) to (start + 3, 10)
-- Code(Expression(6, Sub)) at (prev + 6, 1) to (start + 0, 2)
-    = (((c1 + (c0 - c1)) + c2) - c2)
+- Code(Counter(0)) at (prev + 6, 1) to (start + 0, 2)
 
diff --git a/tests/coverage/simple_match.cov-map b/tests/coverage/simple_match.cov-map
index 7c242e2c328..49819b23482 100644
--- a/tests/coverage/simple_match.cov-map
+++ b/tests/coverage/simple_match.cov-map
@@ -1,32 +1,29 @@
 Function name: simple_match::main
-Raw bytes (78): 0x[01, 01, 0c, 01, 05, 2b, 2f, 05, 02, 09, 0d, 27, 11, 2b, 2f, 05, 02, 09, 0d, 27, 11, 2b, 2f, 05, 02, 09, 0d, 0a, 01, 04, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 27, 05, 09, 00, 0d, 22, 05, 0d, 00, 16, 09, 02, 0d, 00, 0e, 22, 02, 11, 02, 12, 09, 04, 0d, 07, 0e, 0d, 0a, 0d, 00, 0f, 11, 03, 01, 00, 02]
+Raw bytes (72): 0x[01, 01, 09, 01, 05, 01, 23, 09, 0d, 1f, 11, 01, 23, 09, 0d, 1f, 11, 01, 23, 09, 0d, 0a, 01, 04, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 1f, 05, 09, 00, 0d, 1a, 05, 0d, 00, 16, 09, 02, 0d, 00, 0e, 1a, 02, 11, 02, 12, 09, 04, 0d, 07, 0e, 0d, 0a, 0d, 00, 0f, 11, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 12
+Number of expressions: 9
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Expression(10, Add), rhs = Expression(11, Add)
-- expression 2 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 3 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 4 operands: lhs = Expression(9, Add), rhs = Counter(4)
-- expression 5 operands: lhs = Expression(10, Add), rhs = Expression(11, Add)
-- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
-- expression 8 operands: lhs = Expression(9, Add), rhs = Counter(4)
-- expression 9 operands: lhs = Expression(10, Add), rhs = Expression(11, Add)
-- expression 10 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-- expression 11 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 1 operands: lhs = Counter(0), rhs = Expression(8, Add)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(7, Add), rhs = Counter(4)
+- expression 4 operands: lhs = Counter(0), rhs = Expression(8, Add)
+- expression 5 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 6 operands: lhs = Expression(7, Add), rhs = Counter(4)
+- expression 7 operands: lhs = Counter(0), rhs = Expression(8, Add)
+- expression 8 operands: lhs = Counter(2), rhs = Counter(3)
 Number of file 0 mappings: 10
 - Code(Counter(0)) at (prev + 4, 1) to (start + 7, 15)
 - Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(9, Add)) at (prev + 5, 9) to (start + 0, 13)
-    = ((c1 + (c0 - c1)) + (c2 + c3))
-- Code(Expression(8, Sub)) at (prev + 5, 13) to (start + 0, 22)
-    = (((c1 + (c0 - c1)) + (c2 + c3)) - c4)
+- Code(Expression(7, Add)) at (prev + 5, 9) to (start + 0, 13)
+    = (c0 + (c2 + c3))
+- Code(Expression(6, Sub)) at (prev + 5, 13) to (start + 0, 22)
+    = ((c0 + (c2 + c3)) - c4)
 - Code(Counter(2)) at (prev + 2, 13) to (start + 0, 14)
-- Code(Expression(8, Sub)) at (prev + 2, 17) to (start + 2, 18)
-    = (((c1 + (c0 - c1)) + (c2 + c3)) - c4)
+- Code(Expression(6, Sub)) at (prev + 2, 17) to (start + 2, 18)
+    = ((c0 + (c2 + c3)) - c4)
 - Code(Counter(2)) at (prev + 4, 13) to (start + 7, 14)
 - Code(Counter(3)) at (prev + 10, 13) to (start + 0, 15)
 - Code(Counter(4)) at (prev + 3, 1) to (start + 0, 2)
diff --git a/tests/coverage/sort_groups.cov-map b/tests/coverage/sort_groups.cov-map
index 3cbda6fbe1a..361b70fb74f 100644
--- a/tests/coverage/sort_groups.cov-map
+++ b/tests/coverage/sort_groups.cov-map
@@ -1,77 +1,67 @@
 Function name: sort_groups::generic_fn::<&str>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
 - Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: sort_groups::generic_fn::<()>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
 - Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: sort_groups::generic_fn::<char>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
 - Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: sort_groups::generic_fn::<i32>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
 - Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: sort_groups::main
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 06, 01, 04, 23, 05, 04, 24, 02, 06, 02, 02, 06, 00, 07, 07, 01, 05, 02, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 06, 01, 04, 23, 05, 04, 24, 02, 06, 02, 02, 06, 00, 07, 01, 01, 05, 02, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 6, 1) to (start + 4, 35)
 - Code(Counter(1)) at (prev + 4, 36) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 2, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 2, 2)
 
 Function name: sort_groups::other_fn
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 17, 01, 00, 11]
diff --git a/tests/coverage/try_error_result.cov-map b/tests/coverage/try_error_result.cov-map
index 83f1869a31e..49e6c7ceefc 100644
--- a/tests/coverage/try_error_result.cov-map
+++ b/tests/coverage/try_error_result.cov-map
@@ -1,62 +1,54 @@
 Function name: <try_error_result::Thing1>::get_thing_2
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 29, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 1a, 07, 02, 05, 00, 06]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 29, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 1a, 01, 02, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 41, 5) to (start + 1, 24)
 - Code(Counter(1)) at (prev + 2, 13) to (start + 0, 20)
 - Code(Expression(0, Sub)) at (prev + 2, 13) to (start + 0, 26)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 5) to (start + 0, 6)
 
 Function name: <try_error_result::Thing2>::call
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 34, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 13, 07, 02, 05, 00, 06]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 34, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 13, 01, 02, 05, 00, 06]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 52, 5) to (start + 1, 24)
 - Code(Counter(1)) at (prev + 2, 13) to (start + 0, 20)
 - Code(Expression(0, Sub)) at (prev + 2, 13) to (start + 0, 19)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 5) to (start + 0, 6)
 
 Function name: try_error_result::call
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 04, 01, 01, 14, 05, 02, 09, 00, 10, 02, 02, 09, 00, 0f, 07, 02, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 04, 01, 01, 14, 05, 02, 09, 00, 10, 02, 02, 09, 00, 0f, 01, 02, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 4, 1) to (start + 1, 20)
 - Code(Counter(1)) at (prev + 2, 9) to (start + 0, 16)
 - Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 15)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 2, 1) to (start + 0, 2)
 
 Function name: try_error_result::main
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 73, 01, 02, 0c, 05, 03, 05, 00, 06, 02, 02, 05, 00, 0b, 07, 01, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 73, 01, 02, 0c, 05, 03, 05, 00, 06, 02, 02, 05, 00, 0b, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 115, 1) to (start + 2, 12)
 - Code(Counter(1)) at (prev + 3, 5) to (start + 0, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 0, 11)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 1) to (start + 0, 2)
 
 Function name: try_error_result::test1
 Raw bytes (75): 0x[01, 01, 08, 01, 07, 00, 09, 03, 0d, 12, 1d, 03, 0d, 1b, 0d, 1f, 00, 11, 00, 0b, 01, 0d, 01, 02, 17, 03, 07, 09, 00, 0e, 12, 02, 09, 04, 1a, 1d, 06, 0d, 00, 29, 11, 00, 29, 00, 2a, 00, 01, 0d, 00, 2a, 00, 00, 2a, 00, 2b, 0e, 04, 0d, 00, 2a, 00, 00, 2a, 00, 2b, 0d, 03, 05, 00, 0b, 17, 01, 01, 00, 02]
diff --git a/tests/coverage/unicode.cov-map b/tests/coverage/unicode.cov-map
index aedfb2071c1..06a2c930498 100644
--- a/tests/coverage/unicode.cov-map
+++ b/tests/coverage/unicode.cov-map
@@ -1,31 +1,27 @@
 Function name: unicode::main
-Raw bytes (67): 0x[01, 01, 09, 01, 05, 03, 05, 1e, 0d, 22, 09, 03, 05, 11, 1b, 1e, 0d, 22, 09, 03, 05, 09, 01, 0e, 01, 00, 0b, 05, 01, 09, 00, 0c, 03, 00, 10, 00, 1b, 05, 00, 1c, 00, 28, 22, 02, 08, 00, 25, 09, 00, 29, 00, 46, 11, 00, 47, 02, 06, 1b, 02, 06, 00, 07, 17, 02, 05, 01, 02]
+Raw bytes (61): 0x[01, 01, 06, 01, 05, 16, 0d, 01, 09, 11, 13, 16, 0d, 01, 09, 09, 01, 0e, 01, 00, 0b, 05, 01, 09, 00, 0c, 03, 00, 10, 00, 1b, 05, 00, 1c, 00, 28, 01, 02, 08, 00, 25, 09, 00, 29, 00, 46, 11, 00, 47, 02, 06, 13, 02, 06, 00, 07, 0f, 02, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 9
+Number of expressions: 6
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(1)
-- expression 2 operands: lhs = Expression(7, Sub), rhs = Counter(3)
-- expression 3 operands: lhs = Expression(8, Sub), rhs = Counter(2)
-- expression 4 operands: lhs = Expression(0, Add), rhs = Counter(1)
-- expression 5 operands: lhs = Counter(4), rhs = Expression(6, Add)
-- expression 6 operands: lhs = Expression(7, Sub), rhs = Counter(3)
-- expression 7 operands: lhs = Expression(8, Sub), rhs = Counter(2)
-- expression 8 operands: lhs = Expression(0, Add), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(5, Sub), rhs = Counter(3)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(2)
+- expression 3 operands: lhs = Counter(4), rhs = Expression(4, Add)
+- expression 4 operands: lhs = Expression(5, Sub), rhs = Counter(3)
+- expression 5 operands: lhs = Counter(0), rhs = Counter(2)
 Number of file 0 mappings: 9
 - Code(Counter(0)) at (prev + 14, 1) to (start + 0, 11)
 - Code(Counter(1)) at (prev + 1, 9) to (start + 0, 12)
 - Code(Expression(0, Add)) at (prev + 0, 16) to (start + 0, 27)
     = (c0 + c1)
 - Code(Counter(1)) at (prev + 0, 28) to (start + 0, 40)
-- Code(Expression(8, Sub)) at (prev + 2, 8) to (start + 0, 37)
-    = ((c0 + c1) - c1)
+- Code(Counter(0)) at (prev + 2, 8) to (start + 0, 37)
 - Code(Counter(2)) at (prev + 0, 41) to (start + 0, 70)
 - Code(Counter(4)) at (prev + 0, 71) to (start + 2, 6)
-- Code(Expression(6, Add)) at (prev + 2, 6) to (start + 0, 7)
-    = ((((c0 + c1) - c1) - c2) + c3)
-- Code(Expression(5, Add)) at (prev + 2, 5) to (start + 1, 2)
-    = (c4 + ((((c0 + c1) - c1) - c2) + c3))
+- Code(Expression(4, Add)) at (prev + 2, 6) to (start + 0, 7)
+    = ((c0 - c2) + c3)
+- Code(Expression(3, Add)) at (prev + 2, 5) to (start + 1, 2)
+    = (c4 + ((c0 - c2) + c3))
 
 Function name: unicode::他 (unused)
 Raw bytes (9): 0x[01, 01, 00, 01, 00, 1e, 19, 00, 25]
diff --git a/tests/coverage/uses_inline_crate.cov-map b/tests/coverage/uses_inline_crate.cov-map
index 6b621825c88..55ceb46b060 100644
--- a/tests/coverage/uses_inline_crate.cov-map
+++ b/tests/coverage/uses_inline_crate.cov-map
@@ -7,19 +7,17 @@ Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 44, 1) to (start + 2, 2)
 
 Function name: used_inline_crate::used_inline_function
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 14, 01, 06, 0f, 05, 06, 10, 02, 06, 02, 02, 06, 00, 07, 07, 01, 05, 01, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 05, 04, 01, 14, 01, 06, 0f, 05, 06, 10, 02, 06, 02, 02, 06, 00, 07, 01, 01, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
-- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 20, 1) to (start + 6, 15)
 - Code(Counter(1)) at (prev + 6, 16) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = (c0 - c1)
-- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 1, 2)
-    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 5) to (start + 1, 2)
 
 Function name: used_inline_crate::used_only_from_bin_crate_generic_function::<&alloc::vec::Vec<i32>>
 Raw bytes (9): 0x[01, 01, 00, 01, 01, 21, 01, 02, 02]
diff --git a/tests/coverage/while.cov-map b/tests/coverage/while.cov-map
index c6557b48e27..4d813a935a0 100644
--- a/tests/coverage/while.cov-map
+++ b/tests/coverage/while.cov-map
@@ -1,15 +1,13 @@
 Function name: while::main
-Raw bytes (28): 0x[01, 01, 02, 01, 00, 03, 00, 04, 01, 01, 01, 01, 10, 03, 02, 0b, 00, 14, 00, 00, 15, 02, 06, 06, 03, 01, 00, 02]
+Raw bytes (26): 0x[01, 01, 01, 01, 00, 04, 01, 01, 01, 01, 10, 03, 02, 0b, 00, 14, 00, 00, 15, 02, 06, 01, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 2
+Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Zero
-- expression 1 operands: lhs = Expression(0, Add), rhs = Zero
 Number of file 0 mappings: 4
 - Code(Counter(0)) at (prev + 1, 1) to (start + 1, 16)
 - Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 20)
     = (c0 + Zero)
 - Code(Zero) at (prev + 0, 21) to (start + 2, 6)
-- Code(Expression(1, Sub)) at (prev + 3, 1) to (start + 0, 2)
-    = ((c0 + Zero) - Zero)
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 2)
 
diff --git a/tests/mir-opt/coverage/instrument_coverage.main.InstrumentCoverage.diff b/tests/mir-opt/coverage/instrument_coverage.main.InstrumentCoverage.diff
index 3606a9e3932..01876b494c5 100644
--- a/tests/mir-opt/coverage/instrument_coverage.main.InstrumentCoverage.diff
+++ b/tests/mir-opt/coverage/instrument_coverage.main.InstrumentCoverage.diff
@@ -8,12 +8,11 @@
       let mut _3: !;
   
 +     coverage ExpressionId(0) => Expression { lhs: Counter(0), op: Add, rhs: Counter(1) };
-+     coverage ExpressionId(1) => Expression { lhs: Expression(0), op: Subtract, rhs: Counter(1) };
 +     coverage Code(Counter(0)) => $DIR/instrument_coverage.rs:10:1 - 10:11;
 +     coverage Code(Expression(0)) => $DIR/instrument_coverage.rs:11:5 - 12:17;
-+     coverage Code(Expression(1)) => $DIR/instrument_coverage.rs:13:13 - 13:18;
++     coverage Code(Counter(0)) => $DIR/instrument_coverage.rs:13:13 - 13:18;
 +     coverage Code(Counter(1)) => $DIR/instrument_coverage.rs:14:10 - 14:11;
-+     coverage Code(Expression(1)) => $DIR/instrument_coverage.rs:16:1 - 16:2;
++     coverage Code(Counter(0)) => $DIR/instrument_coverage.rs:16:1 - 16:2;
 + 
       bb0: {
 +         Coverage::CounterIncrement(0);
@@ -35,7 +34,6 @@
       }
   
       bb4: {
-+         Coverage::ExpressionUsed(1);
           _0 = const ();
           StorageDead(_2);
           return;
diff --git a/tests/mir-opt/coverage/instrument_coverage_cleanup.main.CleanupPostBorrowck.diff b/tests/mir-opt/coverage/instrument_coverage_cleanup.main.CleanupPostBorrowck.diff
index 34d011540b9..efb1559baf5 100644
--- a/tests/mir-opt/coverage/instrument_coverage_cleanup.main.CleanupPostBorrowck.diff
+++ b/tests/mir-opt/coverage/instrument_coverage_cleanup.main.CleanupPostBorrowck.diff
@@ -8,11 +8,10 @@
       coverage branch { true: BlockMarkerId(0), false: BlockMarkerId(1) } => $DIR/instrument_coverage_cleanup.rs:14:8: 14:36 (#0)
   
       coverage ExpressionId(0) => Expression { lhs: Counter(0), op: Subtract, rhs: Counter(1) };
-      coverage ExpressionId(1) => Expression { lhs: Counter(1), op: Add, rhs: Expression(0) };
       coverage Code(Counter(0)) => $DIR/instrument_coverage_cleanup.rs:13:1 - 14:36;
       coverage Code(Expression(0)) => $DIR/instrument_coverage_cleanup.rs:14:37 - 14:39;
       coverage Code(Counter(1)) => $DIR/instrument_coverage_cleanup.rs:14:39 - 14:40;
-      coverage Code(Expression(1)) => $DIR/instrument_coverage_cleanup.rs:15:1 - 15:2;
+      coverage Code(Counter(0)) => $DIR/instrument_coverage_cleanup.rs:15:1 - 15:2;
       coverage Branch { true_term: Expression(0), false_term: Counter(1) } => $DIR/instrument_coverage_cleanup.rs:14:8 - 14:36;
   
       bb0: {
@@ -44,7 +43,6 @@
       }
   
       bb4: {
-          Coverage::ExpressionUsed(1);
           StorageDead(_1);
           return;
       }
diff --git a/tests/mir-opt/coverage/instrument_coverage_cleanup.main.InstrumentCoverage.diff b/tests/mir-opt/coverage/instrument_coverage_cleanup.main.InstrumentCoverage.diff
index 6756d5c1e1b..a0fe9a5c05c 100644
--- a/tests/mir-opt/coverage/instrument_coverage_cleanup.main.InstrumentCoverage.diff
+++ b/tests/mir-opt/coverage/instrument_coverage_cleanup.main.InstrumentCoverage.diff
@@ -8,11 +8,10 @@
       coverage branch { true: BlockMarkerId(0), false: BlockMarkerId(1) } => $DIR/instrument_coverage_cleanup.rs:14:8: 14:36 (#0)
   
 +     coverage ExpressionId(0) => Expression { lhs: Counter(0), op: Subtract, rhs: Counter(1) };
-+     coverage ExpressionId(1) => Expression { lhs: Counter(1), op: Add, rhs: Expression(0) };
 +     coverage Code(Counter(0)) => $DIR/instrument_coverage_cleanup.rs:13:1 - 14:36;
 +     coverage Code(Expression(0)) => $DIR/instrument_coverage_cleanup.rs:14:37 - 14:39;
 +     coverage Code(Counter(1)) => $DIR/instrument_coverage_cleanup.rs:14:39 - 14:40;
-+     coverage Code(Expression(1)) => $DIR/instrument_coverage_cleanup.rs:15:1 - 15:2;
++     coverage Code(Counter(0)) => $DIR/instrument_coverage_cleanup.rs:15:1 - 15:2;
 +     coverage Branch { true_term: Expression(0), false_term: Counter(1) } => $DIR/instrument_coverage_cleanup.rs:14:8 - 14:36;
 + 
       bb0: {
@@ -41,7 +40,6 @@
       }
   
       bb4: {
-+         Coverage::ExpressionUsed(1);
           StorageDead(_1);
           return;
       }