[PATCH] D60504: NFC: Improve pattern matching in computeKnownBitsFromAssume.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
sdesmalen added reviewers: nikic, spatel, craig.topper, mkazantsev.

This patch changes the order of pattern matching by first testing
a compare instruction's predicate, before doing the pattern
match for the whole expression tree. This has a positive impact
on compilation cost.

Patch by Paul Walker.


https://reviews.llvm.org/D60504

Files:
  lib/Analysis/ValueTracking.cpp

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