[PATCH] D113335: [X86] Preserve FPSW when popping x87 stack

[Serge Pavlov via Phabricator via llvm-commits]

sepavloff updated this revision to Diff 385339.
sepavloff added a comment.

Update patch

- function `doesInstructionSetFPSW` is implemented using `MachineInstr::findRegisterDefOperand`,
- function `doesInstructionUseFPSW` is removed, `MachineInstr::readsRegister` is used instead,
- function `isX87Instruction` is moved to `X86InstrInfo.cpp`,
- tests are simplified,
- a test for dead definition is added.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D113335/new/

https://reviews.llvm.org/D113335

Files:
  llvm/lib/Target/X86/X86FloatingPoint.cpp
  llvm/lib/Target/X86/X86InsertWait.cpp
  llvm/lib/Target/X86/X86InstrFPStack.td
  llvm/lib/Target/X86/X86InstrInfo.cpp
  llvm/lib/Target/X86/X86InstrInfo.h
  llvm/test/CodeGen/X86/x87-stack-pop.mir

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