[PATCH] D142444: [IPSCCP][FuncSpec] Fix compiler crash 60191.

Tue Jan 24 05:55:00 PST 2023

jhuber6 added a subscriber: arsenm.
jhuber6 added inline comments.

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Comment at: llvm/test/Transforms/FunctionSpecialization/compiler-crash-60191.ll:1
+; RUN: opt -S -mtriple=amdgcn-amd-amdhsa --passes="default<O3>" < %s
+
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labrinea wrote:
> nikic wrote:
> > Can you avoid the triple in the test?
> > 
> > Also, is it possible to reduce the test such that it only requires running ipsccp, and not the whole opt pipeline?
> I couldn't get the compiler crash without the triple, or if I further reduced the test. I'll try harder. If I change the pass to "ipsccp<func-spec>" or just "ipsccp" (func-spec is implied by default) the test will still crash.
The fact that this crashes only on `amdgcn-amd-amdhsa` is weird, see https://godbolt.org/z/1h1fdPs4c. @arsenm, do you have any idea what it could be? It works fine with `nvptx64-nvidia-cuda` FWIW.

Repository:
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  https://reviews.llvm.org/D142444/new/

https://reviews.llvm.org/D142444