[all-commits] [llvm/llvm-project] 9a7e30: [VectorCombine] Add tests for UB issue, remove imm...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9a7e307b64b52fac74df9d1f7c2696939e4627f1
      https://github.com/llvm/llvm-project/commit/9a7e307b64b52fac74df9d1f7c2696939e4627f1
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-05-05 (Mon, 05 May 2025)

  Changed paths:
    M llvm/test/Transforms/VectorCombine/AArch64/scalarize-scalable.ll
    M llvm/test/Transforms/VectorCombine/X86/insert-binop-with-constant-inseltpoison.ll
    M llvm/test/Transforms/VectorCombine/X86/insert-binop-with-constant.ll
    A llvm/test/Transforms/VectorCombine/binop-scalarize.ll

  Log Message:
  -----------
  [VectorCombine] Add tests for UB issue, remove immediate UB from existing tests. NFC (#138395)

This adds a test that exercises the part of scalarizeBinOpOrCmp that
produces immediate UB as described in
https://github.com/llvm/llvm-project/pull/138095#discussion_r2070133432,
but is fortunately currently folded into a correct transform.

I also noticed a bunch of immediate UB in some of the existing tests so
this also cleans them up. They should still all be scalarized though.



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