[llvm] [AMDGPU] Handle nontemporal and amdgpu.last.use metadata in amdgpu-lower-buffer-fat-pointers (PR #120139)

[Jay Foad via llvm-commits]

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@@ -1240,6 +1240,11 @@ bool SITargetLowering::getTgtMemIntrinsic(IntrinsicInfo &Info,
     }
 
     Info.flags |= MachineMemOperand::MODereferenceable;
+
+    if (CI.hasMetadata(LLVMContext::MD_nontemporal))
+      Info.flags |= MachineMemOperand::MONonTemporal;
+    Info.flags |= getTargetMMOFlags(CI);
+
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jayfoad wrote:

Move this up to the top of the function? It seems like it could apply to all intrinsics, not just buffer intrinsics.

https://github.com/llvm/llvm-project/pull/120139