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(parent: 95ae09a) | patch
When checking for signed multiplication overflow, watch out for INT_MIN and -1.
authorDan Gohman <gohman@apple.com>
Mon, 23 May 2011 21:07:39 +0000 (21:07 +0000)
committerDan Gohman <gohman@apple.com>
Mon, 23 May 2011 21:07:39 +0000 (21:07 +0000)
commit1b58d4536a561f28bf935dcb29b483c52a6bf4c6
tree80e36c471ebb01345cc1c381f1c526c8f9af5546tree | snapshot
parent95ae09afdedcb8de3d20307c7ee924079d12c68acommit | diff
When checking for signed multiplication overflow, watch out for INT_MIN and -1.
This fixes PR9845.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131919 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/LoopStrengthReduce.cpp diff | blob | history
test/CodeGen/X86/lsr-overflow.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors