1 files changed, 4 insertions, 1 deletions
diff --git a/gnu/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/gnu/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 60fa5e4afef..8fd8548b99d 100644
--- a/gnu/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/gnu/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1034,7 +1034,10 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
 
   setOperationAction(ISD::READCYCLECOUNTER, MVT::i64, isPPC64 ? Legal : Custom);
 
-  if (!isPPC64) {
+  if (isPPC64)
+    setMaxAtomicSizeInBitsSupported(64);
+  else {
+    setMaxAtomicSizeInBitsSupported(32);
     setOperationAction(ISD::ATOMIC_LOAD,  MVT::i64, Expand);
     setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Expand);
   }