3 files changed, 8 insertions, 15 deletions
diff --git a/compiler/rustc_middle/src/mir/coverage.rs b/compiler/rustc_middle/src/mir/coverage.rs
index 9ef67392291..a6d6f6f5df4 100644
--- a/compiler/rustc_middle/src/mir/coverage.rs
+++ b/compiler/rustc_middle/src/mir/coverage.rs
@@ -18,11 +18,6 @@ rustc_index::newtype_index! {
 
 impl CounterId {
     pub const START: Self = Self::from_u32(0);
-
-    #[inline(always)]
-    pub fn next_id(self) -> Self {
-        Self::from_u32(self.as_u32() + 1)
-    }
 }
 
 rustc_index::newtype_index! {
@@ -38,11 +33,6 @@ rustc_index::newtype_index! {
 
 impl ExpressionId {
     pub const START: Self = Self::from_u32(0);
-
-    #[inline(always)]
-    pub fn next_id(self) -> Self {
-        Self::from_u32(self.as_u32() + 1)
-    }
 }
 
 /// Operand of a coverage-counter expression.
diff --git a/compiler/rustc_middle/src/mir/pretty.rs b/compiler/rustc_middle/src/mir/pretty.rs
index 9361d32a0d5..c5e3ee575e1 100644
--- a/compiler/rustc_middle/src/mir/pretty.rs
+++ b/compiler/rustc_middle/src/mir/pretty.rs
@@ -16,7 +16,7 @@ use rustc_middle::mir::interpret::{
     Pointer, Provenance,
 };
 use rustc_middle::mir::visit::Visitor;
-use rustc_middle::mir::*;
+use rustc_middle::mir::{self, *};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_target::abi::Size;
 
@@ -685,10 +685,13 @@ impl Debug for Statement<'_> {
             AscribeUserType(box (ref place, ref c_ty), ref variance) => {
                 write!(fmt, "AscribeUserType({place:?}, {variance:?}, {c_ty:?})")
             }
-            Coverage(box self::Coverage { ref kind, code_region: Some(ref rgn) }) => {
-                write!(fmt, "Coverage::{kind:?} for {rgn:?}")
+            Coverage(box mir::Coverage { ref kind, ref code_regions }) => {
+                if code_regions.is_empty() {
+                    write!(fmt, "Coverage::{kind:?}")
+                } else {
+                    write!(fmt, "Coverage::{kind:?} for {code_regions:?}")
+                }
             }
-            Coverage(box ref coverage) => write!(fmt, "Coverage::{:?}", coverage.kind),
             Intrinsic(box ref intrinsic) => write!(fmt, "{intrinsic}"),
             ConstEvalCounter => write!(fmt, "ConstEvalCounter"),
             Nop => write!(fmt, "nop"),
diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs
index 49f4def6dfb..bc28735a45d 100644
--- a/compiler/rustc_middle/src/mir/syntax.rs
+++ b/compiler/rustc_middle/src/mir/syntax.rs
@@ -514,7 +514,7 @@ pub enum FakeReadCause {
 #[derive(TypeFoldable, TypeVisitable)]
 pub struct Coverage {
     pub kind: CoverageKind,
-    pub code_region: Option<CodeRegion>,
+    pub code_regions: Vec<CodeRegion>,
 }
 
 #[derive(Clone, Debug, PartialEq, TyEncodable, TyDecodable, Hash, HashStable)]