[PATCH] D70009: [ARM][ReachingDefs] RDA in LoLoops

[Sam Parker via Phabricator via llvm-commits]

samparker updated this revision to Diff 229861.
samparker retitled this revision from "[ARM][ReachingDefAnalysis] Use RDA for loloops" to "[ARM][ReachingDefs] RDA in LoLoops".
samparker edited the summary of this revision.
samparker added a comment.

Taken hasSameReachingDef from D70240 <https://reviews.llvm.org/D70240> and added isRegUsedAfter to RDA. This allows a great simplication for finding an insertion point and allows us to check for CPSR use/def within the loop too. I've added a couple of extra tests for the CPSR logic.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70009/new/

https://reviews.llvm.org/D70009

Files:
  llvm/include/llvm/CodeGen/ReachingDefAnalysis.h
  llvm/lib/CodeGen/ReachingDefAnalysis.cpp
  llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
  llvm/test/CodeGen/ARM/O3-pipeline.ll
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/unsafe-cpsr-loop-def.mir
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/unsafe-cpsr-loop-use.mir
  llvm/test/CodeGen/Thumb2/ifcvt-neon-deprecated.mir

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