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

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,383 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -O0 -mcpu=gfx1200 < %s | FileCheck --check-prefix=GFX12 %s
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arsenm wrote:

Why -O0? Can you merge this with the existing buffer lowering test? 

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