[all-commits] [llvm/llvm-project] 8b6e1d: [X86] getIntImmCostInst - reduce i64 imm costs of ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8b6e1dc924fd3c35670b46d744091d2f7ce94c5f
      https://github.com/llvm/llvm-project/commit/8b6e1dc924fd3c35670b46d744091d2f7ce94c5f
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-10-07 (Mon, 07 Oct 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
    M llvm/test/CodeGen/X86/extract-lowbits.ll

  Log Message:
  -----------
  [X86] getIntImmCostInst - reduce i64 imm costs of AND(X,CMASK) case that can fold to BEXT/BZHI

With BEXT/BZHI the i64 imm mask will be replaced with a i16/i8 control mask

Fixes #111323



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