[PATCH] D108139: [X86] Freeze vXi8 shl(x,1) -> add(x,x) vector fold (PR50468)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 367983.
RKSimon added a comment.

Add comment explaining the need for freeze


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108139/new/

https://reviews.llvm.org/D108139

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/bitreverse.ll
  llvm/test/CodeGen/X86/combine-bitreverse.ll
  llvm/test/CodeGen/X86/vector-bitreverse.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-256.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-512.ll
  llvm/test/CodeGen/X86/vector-fshr-128.ll
  llvm/test/CodeGen/X86/vector-fshr-256.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-256.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-512.ll
  llvm/test/CodeGen/X86/vector-rotate-128.ll
  llvm/test/CodeGen/X86/vector-rotate-256.ll

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