[all-commits] [llvm/llvm-project] 750d00: [X86] combineConcatVectorOps - add concatenation h...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 750d009bb22015be4b8b6278fb24dbda90c7b485
      https://github.com/llvm/llvm-project/commit/750d009bb22015be4b8b6278fb24dbda90c7b485
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-04-10 (Thu, 10 Apr 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/shift-i512.ll
    M llvm/test/CodeGen/X86/shuffle-vs-trunc-512.ll
    M llvm/test/CodeGen/X86/vector-fshr-256.ll
    M llvm/test/CodeGen/X86/vector-fshr-rot-256.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-7.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-8.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-6.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-7.ll
    M llvm/test/CodeGen/X86/vector-reduce-ctpop.ll
    M llvm/test/CodeGen/X86/widen_fdiv.ll

  Log Message:
  -----------
  [X86] combineConcatVectorOps - add concatenation handling for BITCAST nodes (#133913)

These nodes are effectively free, so we should only concatenate if the
inner nodes will concatenate together.

This also exposed a regression in canonicalizeShuffleWithOp that failed
to realize it could potentially merge shuffles with a CONCAT_VECTORS
node.



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