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[DAGCombiner] Do various combine on usubo.
authorAmaury Sechet <deadalnix@gmail.com>
Thu, 9 Mar 2017 19:28:00 +0000 (19:28 +0000)
committerAmaury Sechet <deadalnix@gmail.com>
Thu, 9 Mar 2017 19:28:00 +0000 (19:28 +0000)
commitf15775bffbf2a7dee6cffb16877e6208d4f591d1
tree5d32b383c1301243e1e0d043dce68ee158e9431b
parentf5d1d88cc260b93723cda02f4c5d705c9a07f0b2
[DAGCombiner] Do various combine on usubo.

Summary: This essentially does the same transform as for SUBC.

Reviewers: jyknight, nemanjai, mkuper, spatel, RKSimon, zvi, bkramer

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30437

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297404 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
test/CodeGen/X86/xaluo.ll