Matt Arsenault 8e57f79569 AMDGPU: Check cheaper condition before SignBitIsZero
Don't do an expensive computeKnownBits call when we
can do the cheap check for legal offsets first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261720 91177308-0d34-0410-b5e6-96231b3b80d8
2016-02-24 04:55:29 +00:00
..
2016-01-26 21:29:08 +00:00
2016-01-26 21:29:08 +00:00
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