[all-commits] [llvm/llvm-project] 765690: [X86] Fold (v4i32 (scalar_to_vector (i32 (anyext (...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 76569025dd8b026b3309dedbcaf877d16eace805
      https://github.com/llvm/llvm-project/commit/76569025dd8b026b3309dedbcaf877d16eace805
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-01-17 (Fri, 17 Jan 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/bfloat.ll
    M llvm/test/CodeGen/X86/canonicalize-vars-f16-type.ll
    M llvm/test/CodeGen/X86/cvt16.ll
    M llvm/test/CodeGen/X86/fp-roundeven.ll
    M llvm/test/CodeGen/X86/fp16-libcalls.ll
    M llvm/test/CodeGen/X86/half-darwin.ll
    M llvm/test/CodeGen/X86/half-fp80-darwin.ll
    M llvm/test/CodeGen/X86/half.ll
    M llvm/test/CodeGen/X86/pr114520.ll
    M llvm/test/CodeGen/X86/pr31088.ll
    M llvm/test/CodeGen/X86/pr86305.ll
    M llvm/test/CodeGen/X86/vector-half-conversions.ll

  Log Message:
  -----------
  [X86] Fold (v4i32 (scalar_to_vector (i32 (anyext (bitcast (f16)))))) -> (v4i32 bitcast (v8f16 scalar_to_vector)) (#123338)

This pattern tends to appear during f16 -> f32 promotion

Partially addresses the unnecessary XMM->GPR->XMM moves when working with f16 types (#107086)



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