[PATCH] D74605: [ARM][RDA] add getUniqueReachingMIDef

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: dmgreen, SjoerdMeijer.
Herald added subscribers: hiraditya, kristof.beyls.
Herald added a project: LLVM.

Add getUniqueReachingMIDef to RDA which performs a global search for a machine instruction that produces a unique definition of a given register at a given point. This now replaces the uses of getReachingMIDef in ARMLowOverheadLoops. getReachingMIDef has been renamed to getReachingLocalMIDef and has been made private along with getInstFromId.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D74605

Files:
  llvm/include/llvm/CodeGen/ReachingDefAnalysis.h
  llvm/lib/CodeGen/ReachingDefAnalysis.cpp
  llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/matrix.mir
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/multiple-do-loops.mir

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