================
@@ -550,6 +551,16 @@ AMDGPUTargetCodeGenInfo::getLLVMSyncScopeID(const
LangOptions &LangOpts,
void AMDGPUTargetCodeGenInfo::setTargetAtomicMetadata(
CodeGenFunction &CGF, llvm::AtomicRMWInst &RMW) const {
+
+ if (RMW.getPointerAddressSpace() == llvm::AMDGPUAS::FLAT_ADDRESS &&
+ CGF.CGM.getLangOpts().threadPrivateMemoryAtomicsAreUndefined()) {
+ llvm::MDBuilder MDHelper(CGF.getLLVMContext());
+ llvm::MDNode *ASRange = MDHelper.createRange(
+ llvm::APInt(32, llvm::AMDGPUAS::PRIVATE_ADDRESS),
+ llvm::APInt(32, llvm::AMDGPUAS::PRIVATE_ADDRESS + 1));
+ RMW.setMetadata(llvm::LLVMContext::MD_noalias_addrspace, ASRange);
----------------
arsenm wrote:
It's defined in the parent PR #102461. I haven't posted the patch to use it
yet, but the primary use is the AtomicExpand hooks
https://github.com/llvm/llvm-project/pull/102462
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