[PATCH] D21651: AMDGPU: Fix verifier errors with undef vector indices

[Matt Arsenault via llvm-commits]

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

Also fix pointlessly adding exec to liveins.


http://reviews.llvm.org/D21651

Files:
  lib/Target/AMDGPU/SILowerControlFlow.cpp
  test/CodeGen/AMDGPU/indirect-addressing-si.ll
  test/CodeGen/AMDGPU/indirect-addressing-undef.mir

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