[all-commits] [llvm/llvm-project] ba769e: [X86] combinePTESTCC - canonicalize constants to t...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba769e125b106c059321de16a760658449b02c8a
      https://github.com/llvm/llvm-project/commit/ba769e125b106c059321de16a760658449b02c8a
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-10-29 (Wed, 29 Oct 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [X86] combinePTESTCC - canonicalize constants to the RHS if the PTEST/TESTP node just uses the ZF flag (#165601)

If we're just comparing against zero then move the constant to the RHS to reduce duplicated folds.

Noticed while triaging #156233



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