[PATCH] D150107: [X86] Remove patterns for shift/rotate with immediate 1 and optimize during MC lowering

[Kan Shengchen via Phabricator via llvm-commits]

skan updated this revision to Diff 523002.
skan added a comment.

Rebase


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150107/new/

https://reviews.llvm.org/D150107

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86InstrInfo.cpp
  llvm/lib/Target/X86/X86InstrShiftRotate.td
  llvm/lib/Target/X86/X86MCInstLower.cpp
  llvm/test/CodeGen/X86/GlobalISel/ashr-scalar.ll
  llvm/test/CodeGen/X86/GlobalISel/lshr-scalar.ll
  llvm/test/CodeGen/X86/GlobalISel/select-ashr-scalar.mir
  llvm/test/CodeGen/X86/GlobalISel/select-lshr-scalar.mir
  llvm/test/CodeGen/X86/fast-isel-shift.ll
  llvm/test/CodeGen/X86/gpr-to-mask.ll
  llvm/test/CodeGen/X86/is_fpclass.ll

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