================
@@ -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);
----------------
Artem-B wrote:
What's the plan for this metadata? It does not seem to exist or be used for
anything yet.
I do not see it in
https://github.com/llvm/llvm-project/blob/6b5308b7924108d63149d7c521f21c5e90da7a09/llvm/include/llvm/IR/FixedMetadataKinds.def#L21
Does this patch miss some changes or depends on other patches?
https://github.com/llvm/llvm-project/pull/102462
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