[PATCH] D140647: Handle simple diamond CFG hoisting in DivRemPairs.

[Owen Anderson via Phabricator via llvm-commits]

resistor updated this revision to Diff 485265.
resistor added a comment.

Add negative tests. Enhance comments to explain the profitability heuristic.
Attempt to fix pre-existing correctness concerns WRT non-transferring predecessors.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D140647/new/

https://reviews.llvm.org/D140647

Files:
  llvm/lib/Transforms/Scalar/DivRemPairs.cpp
  llvm/test/Transforms/DivRemPairs/MSP430/div-rem-pairs.ll
  llvm/test/Transforms/DivRemPairs/Mips/div-rem-pairs.ll
  llvm/test/Transforms/DivRemPairs/PowerPC/div-rem-pairs.ll
  llvm/test/Transforms/DivRemPairs/RISCV/div-rem-pairs.ll
  llvm/test/Transforms/DivRemPairs/X86/div-expanded-rem-pair.ll
  llvm/test/Transforms/DivRemPairs/X86/div-rem-pairs.ll

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