[PATCH] D143963: AMDGPU: Override getNegatedExpression constant handling

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

In D143963#4131640 <https://reviews.llvm.org/D143963#4131640>, @foad wrote:

> `llc -march=amdgcn -mcpu=gfx1030` hangs on this test case:
>
>   define float @f(float %arg) {
>   bb:
>     %i = fmul float %arg, 0.0
>     %i1 = fsub float 0.0, %i
>     ret float %i1
>   }
>
> Could you please fix or revert?

I've reverted the patch and added this test case to `test/CodeGen/AMDGPU/fneg-combines.new.ll`


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https://reviews.llvm.org/D143963