[PATCH] D30648: In Thumb1, materialize a move between low registers as a `movs`, if CPSR isn't live.

[A. Skrobov via Phabricator via llvm-commits]

tyomitch created this revision.
Herald added a subscriber: rengolin.

Previously, it had always been materialized as a push/pop sequence.


https://reviews.llvm.org/D30648

Files:
  lib/Target/ARM/Thumb1InstrInfo.cpp
  test/CodeGen/ARM/arm-and-tst-peephole.ll
  test/CodeGen/ARM/atomic-cmpxchg.ll
  test/CodeGen/Thumb/copy_thumb.ll
  test/CodeGen/Thumb/thumb-shrink-wrapping.ll

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