[PATCH] D65275: [ARM][LowOverheadLoops] Add CPSR defs

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: SjoerdMeijer, dmgreen.
Herald added subscribers: kristof.beyls, javed.absar, qcolombet.

Both WhileLoopStart and LoopDec may get turned into a sub and cmp pair, so add an implicit def to these pseudo instructions in that WLS and LE aren't generated. This has resulted in all the mir test changes.


https://reviews.llvm.org/D65275

Files:
  lib/Target/ARM/ARMInstrThumb2.td
  test/CodeGen/Thumb2/LowOverheadLoops/cond-mov.mir
  test/CodeGen/Thumb2/LowOverheadLoops/end-positive-offset.mir
  test/CodeGen/Thumb2/LowOverheadLoops/massive.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-call.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-spill.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-non-loop.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-while.mir
  test/CodeGen/Thumb2/LowOverheadLoops/size-limit.mir
  test/CodeGen/Thumb2/LowOverheadLoops/switch.mir
  test/CodeGen/Thumb2/LowOverheadLoops/while-negative-offset.mir
  test/CodeGen/Thumb2/LowOverheadLoops/while.mir

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