[all-commits] [llvm/llvm-project] a6ace2: [X86] combineConcatVectorOps - ensure we're only c...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a6ace2801e8900a6fe8c3b8295938f3b3c1e4466
      https://github.com/llvm/llvm-project/commit/a6ace2801e8900a6fe8c3b8295938f3b3c1e4466
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-06-11 (Wed, 11 Jun 2025)

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

  Log Message:
  -----------
  [X86] combineConcatVectorOps - ensure we're only concatenating v2f64 generic shuffles into vXf64 vshufpd

Identified while triaging #143606 - we can't concat v4f64 lhs/rhs subvecs and then expect the v2f64 operands to be in the correct place for VSHUFPD

Test coverage will follow



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