[all-commits] [llvm/llvm-project] ffe0cc: [X86] Add XOR(X, MIN_SIGNED_VALUE) -> ADD(X, MIN_S...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffe0cc82dbaecde4fd1bb2bca5c6aea59be698a6
      https://github.com/llvm/llvm-project/commit/ffe0cc82dbaecde4fd1bb2bca5c6aea59be698a6
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-04-04 (Mon, 04 Apr 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86InstrCompiler.td
    M llvm/test/CodeGen/X86/avx512-cmp.ll
    M llvm/test/CodeGen/X86/combine-add-ssat.ll
    M llvm/test/CodeGen/X86/horizontal-reduce-smin.ll
    M llvm/test/CodeGen/X86/sadd_sat.ll
    M llvm/test/CodeGen/X86/sadd_sat_plus.ll
    M llvm/test/CodeGen/X86/sadd_sat_vec.ll
    M llvm/test/CodeGen/X86/ssub_sat.ll
    M llvm/test/CodeGen/X86/ssub_sat_plus.ll
    M llvm/test/CodeGen/X86/vector-reduce-smin.ll
    M llvm/test/CodeGen/X86/xor-lea.ll

  Log Message:
  -----------
  [X86] Add XOR(X, MIN_SIGNED_VALUE) -> ADD(X, MIN_SIGNED_VALUE) isel patterns (PR52267)

Improve chances of folding to LEA patterns

Differential Revision: https://reviews.llvm.org/D123043