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(parent: c589098) | patch
InstSimplify: Optimize away useless unsigned comparisons
authorDavid Majnemer <david.majnemer@gmail.com>
Sat, 6 Dec 2014 10:51:40 +0000 (10:51 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Sat, 6 Dec 2014 10:51:40 +0000 (10:51 +0000)
commit620e8763ecbd555e956b3377a5d7b103dd4f3d80
tree85c2d92e0286be1a75749c4b0f86052c6d9b1b79tree | snapshot
parentc589098319a2a919a3fb57f1966325ea141f8b5fcommit | diff
InstSimplify: Optimize away useless unsigned comparisons

Code like X < Y && Y == 0 should always be folded away to false.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223583 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/InstructionSimplify.cpp diff | blob | history
lib/IR/ConstantFold.cpp diff | blob | history
test/Transforms/InstSimplify/AndOrXor.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors