[llvm-branch-commits] [clang] [llvm] [AMDGPU][Attributor] Rework update of `AAAMDWavesPerEU` (PR #123995)

[Matt Arsenault via llvm-branch-commits]

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@@ -4,17 +4,17 @@
 
 declare void @llvm.memcpy.p1.p4.i32(ptr addrspace(1) nocapture, ptr addrspace(4) nocapture, i32, i1) #0
 
- at lds.i32 = unnamed_addr addrspace(3) global i32 poison, align 4
- at lds.arr = unnamed_addr addrspace(3) global [256 x i32] poison, align 4
+ at lds.i32 = unnamed_addr addrspace(3) global i32 undef, align 4
+ at lds.arr = unnamed_addr addrspace(3) global [256 x i32] undef, align 4
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arsenm wrote:

These are unnecessarily regressing from poison to undef 

https://github.com/llvm/llvm-project/pull/123995