[llvm-branch-commits] [llvm] [AMDGPU] Use reverse iteration in CodeGenPrepare (PR #145484)

[Pierre van Houtryve via llvm-branch-commits]

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@@ -109,6 +110,7 @@ class AMDGPUCodeGenPrepareImpl
   bool FlowChanged = false;
   mutable Function *SqrtF32 = nullptr;
   mutable Function *LdexpF32 = nullptr;
+  mutable SetVector<Value *> DeadVals;
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Pierre-vh wrote:

I didn't use a set because I thought we could visit twice, I used one because I call the recursive delete function and I need to avoid cases where it may delete another instruction in that set (and then we visit a dead pointer).

I can use a vector + find of course if you prefer

https://github.com/llvm/llvm-project/pull/145484