Duncan P. N. Exon Smith b1b208a1f5 Analysis: Return early for UndefValue in computeKnownBits ...

There is no benefit in looking through assumptions on UndefValue to
guess known bits.  Return early to avoid walking their use-lists, and
assert that all instances of ConstantData are handled here for similar
reasons (UndefValue was the only integer/pointer holdout).

llvm-svn: 282337

2016-09-24 20:42:02 +00:00

163 KiB

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