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(parent: c21da27) | patch
[LoopReroll] Don't crash on dead code
authorJames Molloy <james.molloy@arm.com>
Mon, 16 Feb 2015 17:01:52 +0000 (17:01 +0000)
committerJames Molloy <james.molloy@arm.com>
Mon, 16 Feb 2015 17:01:52 +0000 (17:01 +0000)
commit4b739069e477d04f7b7fc7d263a3de38c977b732
treeb0fd440857148a375797bd6e45b78b6fbda303bdtree | snapshot
parentc21da273fe448f235b3e5ed0c9997cda8c2b343dcommit | diff
[LoopReroll] Don't crash on dead code

If a PHI has no users, don't crash; bail gracefully. This shouldn't
happen often, but we can make no guarantees that previous passes didn't leave
dead code around.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229405 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/LoopRerollPass.cpp diff | blob | history
test/Transforms/LoopReroll/reduction.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors