[PATCH] D150068: [X86][AsmParser] Refactor code in AsmParser

[Kan Shengchen via Phabricator via llvm-commits]

skan created this revision.
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1. Share code `optimizeInstFromVEX3ToVEX2` with MCInstLower
2. Move the code of optimization for shift/rotate to a separate file
3. Remove the comments like "asm matcher is currently incapable of matching a fixed immediate". Different targets have different literal constants for immediate, and each literal is treated as individual token. Since "gen-asm-matcher" is target-independent backend, I believe tblgen will not and should not support this.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D150068

Files:
  llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
  llvm/lib/Target/X86/MCTargetDesc/CMakeLists.txt
  llvm/lib/Target/X86/MCTargetDesc/X86InstrOptimization.cpp
  llvm/lib/Target/X86/MCTargetDesc/X86InstrOptimization.h
  llvm/lib/Target/X86/X86InstrAsmAlias.td
  llvm/lib/Target/X86/X86MCInstLower.cpp

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