[all-commits] [llvm/llvm-project] 9e29f7: [X86] Remove extra MOV after widening atomic store...

[jofrn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9e29f7ddc42e325aa34dcf58a5da800afa9f64ad
      https://github.com/llvm/llvm-project/commit/9e29f7ddc42e325aa34dcf58a5da800afa9f64ad
  Author: jofrn <jo7frn1 at gmail.com>
  Date:   2026-06-01 (Mon, 01 Jun 2026)

  Changed paths:
    M llvm/include/llvm/Target/TargetSelectionDAG.td
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86InstrAVX512.td
    M llvm/lib/Target/X86/X86InstrSSE.td
    M llvm/test/CodeGen/X86/atomic-load-store.ll
    M llvm/test/CodeGen/X86/atomic-unordered.ll

  Log Message:
  -----------
  [X86] Remove extra MOV after widening atomic store (#197619)

This change adds patterns to optimize out an extra MOV present after
widening the atomic store. Covers `<2 x i8>` (SSE4.1+), `<2 x i16>`,
`<4 x i8>`, `<2 x i32>`, `<2 x float>`, `<4 x i16>`,
`<2 x ptr addrspace(270)>`.

Store-side counterpart to #148898. Stacked on top of #197618; and below
of #197860.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications