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(parent: 14706f9) | patch
Prevent division by 0.
authorMichael Zolotukhin <mzolotukhin@apple.com>
Fri, 13 Feb 2015 00:17:03 +0000 (00:17 +0000)
committerMichael Zolotukhin <mzolotukhin@apple.com>
Fri, 13 Feb 2015 00:17:03 +0000 (00:17 +0000)
commit8b9c97493f03f14de6d88710a767828dc08d66fb
tree585e2442183f2e99ec5a74574378a2fa07ae290etree | snapshot
parent14706f93f8db72b50a6df657e00da8c776b3b848commit | diff
Prevent division by 0.

When we try to estimate number of potentially removed instructions in
loop unroller, we analyze first N iterations and then scale the
computed number by TripCount/N. We should bail out early if N is 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228988 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/LoopUnrollPass.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors