Fix return status of AtomicExpandPass

Correctly reflect change in the return status.

Differential Revision: https://reviews.llvm.org/D83457

1 files changed, 4 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/AtomicExpandPass.cpp b/llvm/lib/CodeGen/AtomicExpandPass.cpp
index 2b51e8c..a503030 100644
--- a/llvm/lib/CodeGen/AtomicExpandPass.cpp
+++ b/llvm/lib/CodeGen/AtomicExpandPass.cpp
@@ -89,7 +89,7 @@ namespace {
         AtomicRMWInst *I,
         TargetLoweringBase::AtomicExpansionKind ExpansionKind);
     AtomicRMWInst *widenPartwordAtomicRMW(AtomicRMWInst *AI);
-    void expandPartwordCmpXchg(AtomicCmpXchgInst *I);
+    bool expandPartwordCmpXchg(AtomicCmpXchgInst *I);
     void expandAtomicRMWToMaskedIntrinsic(AtomicRMWInst *AI);
     void expandAtomicCmpXchgToMaskedIntrinsic(AtomicCmpXchgInst *CI);
 
@@ -826,7 +826,7 @@ AtomicRMWInst *AtomicExpand::widenPartwordAtomicRMW(AtomicRMWInst *AI) {
   return NewAI;
 }
 
-void AtomicExpand::expandPartwordCmpXchg(AtomicCmpXchgInst *CI) {
+bool AtomicExpand::expandPartwordCmpXchg(AtomicCmpXchgInst *CI) {
   // The basic idea here is that we're expanding a cmpxchg of a
   // smaller memory size up to a word-sized cmpxchg. To do this, we
   // need to add a retry-loop for strong cmpxchg, so that
@@ -949,6 +949,7 @@ void AtomicExpand::expandPartwordCmpXchg(AtomicCmpXchgInst *CI) {
 
   CI->replaceAllUsesWith(Res);
   CI->eraseFromParent();
+  return true;
 }
 
 void AtomicExpand::expandAtomicOpToLLSC(
@@ -1448,7 +1449,7 @@ bool AtomicExpand::tryExpandAtomicCmpXchg(AtomicCmpXchgInst *CI) {
     llvm_unreachable("Unhandled case in tryExpandAtomicCmpXchg");
   case TargetLoweringBase::AtomicExpansionKind::None:
     if (ValueSize < MinCASSize)
-      expandPartwordCmpXchg(CI);
+      return expandPartwordCmpXchg(CI);
     return false;
   case TargetLoweringBase::AtomicExpansionKind::LLSC: {
     return expandAtomicCmpXchg(CI);