[PATCH] D22099: AMDGPU: WQM cleanups

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: nhaehnle.
arsenm added a subscriber: llvm-commits.
Herald added a reviewer: tstellarAMD.
Herald added subscribers: kzhuravl, arsenm.

- Add new TTI instruction checks
 - Don't use const for blocks that are mutated.
- Checking isBranch and isTerminator should be redundant

http://reviews.llvm.org/D22099

Files:
  lib/Target/AMDGPU/SIInstrInfo.h
  lib/Target/AMDGPU/SIWholeQuadMode.cpp

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