[PATCH] D110867: X86InstrInfo: Support immediates that are +1/-1 different in optimizeCompareInstr

[Matthias Braun via Phabricator via llvm-commits]

MatzeB updated this revision to Diff 384505.
MatzeB added a comment.

- Fix EFLAGS live-out not triggering, even though we need to update CC flags for `ImmDelta != 0`.
- While on it rename `IsSafe` to the more descriptive `FlagsMayLiveOut`.
- Added new tests `opt_adjusted_imm_multiple_blocks`, `opt_adjusted_imm_multiple_blocks_noopt`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110867/new/

https://reviews.llvm.org/D110867

Files:
  llvm/lib/Target/X86/X86InstrInfo.cpp
  llvm/lib/Target/X86/X86InstrInfo.h
  llvm/test/CodeGen/X86/optimize-compare.mir
  llvm/test/CodeGen/X86/peep-test-5.ll
  llvm/test/CodeGen/X86/use-cr-result-of-dom-icmp-st.ll

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