[clang] [llvm] [AMDGPU] Apply alignment attr for make.buffer.rsrc (PR #166914)

[Shilei Tian via llvm-commits]

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@@ -1657,6 +1769,10 @@ static bool runImpl(Module &M, AnalysisGetter &AG, TargetMachine &TM,
         Ptr = RMW->getPointerOperand();
       else if (auto *CmpX = dyn_cast<AtomicCmpXchgInst>(&I))
         Ptr = CmpX->getPointerOperand();
+      else if (const IntrinsicInst *II = dyn_cast<IntrinsicInst>(&I))
+        if (II->getIntrinsicID() == Intrinsic::amdgcn_make_buffer_rsrc)
+          A.getOrCreateAAFor<AAAMDGPUMakeBufferRsrcAlign>(
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shiltian wrote:

The creation of the AA is weird here as well. I'd expect that we want to know the alignment of a load/store instruction, and we see the pointer is a buffer pointer, then we do something. Here it looks like it is completely up side down.

https://github.com/llvm/llvm-project/pull/166914