[PATCH] D37121: [DivRemHoist] add a pass to move div/rem pairs into the same block (PR31028)

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 114195.
spatel added a comment.

Patch updated:

1. If the target doesn't have a divrem instruction, always decompose the rem.
2. Rename everything to 'DivRemPairs' to reflect the greater powers of the pass (open to other suggestions).
3. Improve code comments to better explain how this works.


https://reviews.llvm.org/D37121

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/Analysis/TargetTransformInfoImpl.h
  include/llvm/InitializePasses.h
  include/llvm/Transforms/Scalar.h
  include/llvm/Transforms/Scalar/DivRemPairs.h
  lib/Analysis/TargetTransformInfo.cpp
  lib/Passes/PassBuilder.cpp
  lib/Passes/PassRegistry.def
  lib/Target/X86/X86TargetTransformInfo.cpp
  lib/Target/X86/X86TargetTransformInfo.h
  lib/Transforms/IPO/PassManagerBuilder.cpp
  lib/Transforms/Scalar/CMakeLists.txt
  lib/Transforms/Scalar/DivRemPairs.cpp
  lib/Transforms/Scalar/Scalar.cpp
  test/Other/new-pm-defaults.ll
  test/Other/new-pm-thinlto-defaults.ll
  test/Transforms/DivRemPairs/div-rem-pairs.ll

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