[PATCH] D44540: [X86] Merge ADDSUB/SUBADD detection into single methods that can detect either and indicate what they found.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: spatel, RKSimon.

Previously, we called the same functions twice with a bool flag determining whether we should look for ADDSUB or SUBADD. It would be more efficient to run the code once and detect either pattern with a flag to tell which type it found.


https://reviews.llvm.org/D44540

Files:
  lib/Target/X86/X86ISelLowering.cpp

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