[all-commits] [llvm/llvm-project] 1584e5: [X86] canonicalizeShuffleWithBinOps - handle gener...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1584e55a2602cd9fe0db059b06a217822ffac7cd
      https://github.com/llvm/llvm-project/commit/1584e55a2602cd9fe0db059b06a217822ffac7cd
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-03-04 (Thu, 04 Mar 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/combine-movmsk.ll
    M llvm/test/CodeGen/X86/combine-sdiv.ll
    M llvm/test/CodeGen/X86/masked_compressstore.ll
    M llvm/test/CodeGen/X86/masked_expandload.ll
    M llvm/test/CodeGen/X86/masked_load.ll
    M llvm/test/CodeGen/X86/masked_store.ll
    M llvm/test/CodeGen/X86/sadd_sat_vec.ll
    M llvm/test/CodeGen/X86/sar_fold64.ll
    M llvm/test/CodeGen/X86/sdiv_fix.ll
    M llvm/test/CodeGen/X86/ssub_sat_vec.ll
    M llvm/test/CodeGen/X86/vec_int_to_fp.ll
    M llvm/test/CodeGen/X86/vec_saddo.ll
    M llvm/test/CodeGen/X86/vector-fshr-rot-128.ll
    M llvm/test/CodeGen/X86/vector-pcmp.ll
    M llvm/test/CodeGen/X86/vector-shift-ashr-128.ll
    M llvm/test/CodeGen/X86/vector-shift-lshr-128.ll

  Log Message:
  -----------
  [X86] canonicalizeShuffleWithBinOps - handle general unaryshuffle(binop(x,c)) patterns not just xor(x,-1)

Generalize the shuffle(not(x)) -> not(shuffle(x)) fold to handle any binop with 0/-1.

Hopefully we can further generalize to help push target unary/binary shuffles through binops similar to what we do in DAGCombiner::visitVECTOR_SHUFFLE