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InstCombine: Combine (X | Y) - X to (~X & Y)
authorDavid Majnemer <david.majnemer@gmail.com>
Mon, 3 Nov 2014 05:53:55 +0000 (05:53 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Mon, 3 Nov 2014 05:53:55 +0000 (05:53 +0000)
commit9808f11b094a0b3a059e12cbe14ab627da7eecd4
tree0e6d33c3189681f1d510cfea752d397294c9b962tree | snapshot
parentc70aecad29b8e28b348c1f71bf44a05ccde5edffcommit | diff
InstCombine: Combine (X | Y) - X to (~X & Y)

This implements the transformation from (X | Y) - X to (~X & Y).

Differential Revision: http://reviews.llvm.org/D5791

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221129 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/InstCombine/InstCombineAddSub.cpp diff | blob | history
test/Transforms/InstCombine/sub.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors