Add test for copying aggregates.

1 files changed, 55 insertions, 0 deletions

diff --git a/tests/mir-opt/dataflow-const-prop/aggregate_copy.foo.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/aggregate_copy.foo.DataflowConstProp.diff
new file mode 100644
index 00000000000..19bbbad5123
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/aggregate_copy.foo.DataflowConstProp.diff
@@ -0,0 +1,55 @@
+- // MIR for `foo` before DataflowConstProp
++ // MIR for `foo` after DataflowConstProp
+  
+  fn foo() -> u32 {
+      let mut _0: u32;
+      let _1: (u32, u32);
+      let mut _4: bool;
+      let mut _5: u32;
+      scope 1 {
+          debug a => _1;
+          let _2: (u32, u32);
+          scope 2 {
+              debug b => _2;
+              let _3: u32;
+              scope 3 {
+                  debug c => _3;
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = const Foo;
+          StorageLive(_2);
+          _2 = _1;
+          StorageLive(_3);
+          _3 = (_2.1: u32);
+          StorageLive(_4);
+          StorageLive(_5);
+          _5 = _3;
+          _4 = Ge(move _5, const 2_u32);
+          switchInt(move _4) -> [0: bb2, otherwise: bb1];
+      }
+  
+      bb1: {
+          StorageDead(_5);
+          _0 = (_2.0: u32);
+          goto -> bb3;
+      }
+  
+      bb2: {
+          StorageDead(_5);
+          _0 = const 13_u32;
+          goto -> bb3;
+      }
+  
+      bb3: {
+          StorageDead(_4);
+          StorageDead(_3);
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+