[PATCH] D148463: [AMDGPU] Ressociate patterns with sub to use SALU

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

Here's a test case for the infinite loop. Can you please fix or revert?

  ; RUN: llc -march=amdgcn -mcpu=gfx1030 < %s
  define amdgpu_cs void @f(i32 inreg %arg, i32 %arg1) {
  bb:
    %i = add i32 %arg1, %arg
    %i2 = sub i32 0, %i
    call void @llvm.amdgcn.raw.buffer.store.i32(i32 %i2, <4 x i32> zeroinitializer, i32 0, i32 0, i32 0)
    ret void
  }
  declare void @llvm.amdgcn.raw.buffer.store.i32(i32, <4 x i32>, i32, i32, i32 immarg)


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https://reviews.llvm.org/D148463