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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-04-02 22:11:56 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-04-02 22:11:56 +0000 |
| commit | 6bdd261df972b5e70e4242721ab16b57c6fe3d1f (patch) | |
| tree | 791a2844654d94db65e968aa13aeb217005fa856 /lib | |
| parent | f5b75932b8c23db5789ad19687c98070c551e896 (diff) | |
| download | llvm-6bdd261df972b5e70e4242721ab16b57c6fe3d1f.tar.gz llvm-6bdd261df972b5e70e4242721ab16b57c6fe3d1f.tar.bz2 llvm-6bdd261df972b5e70e4242721ab16b57c6fe3d1f.tar.xz | |
Don't assume something which might be a constant expression is an instruction.
Based on PR9429, but no testcase because I can't figure out how to trigger it
anymore given other changes to the relevant code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128781 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 0f4bfb7b0d..a8117e6e42 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -729,9 +729,9 @@ bool llvm::isPowerOfTwo(Value *V, const TargetData *TD, unsigned Depth) { // copying a sign bit (sdiv int_min, 2). if (match(V, m_LShr(m_Value(), m_Value())) || match(V, m_UDiv(m_Value(), m_Value()))) { - BinaryOperator *BO = cast<BinaryOperator>(V); - if (BO->isExact()) - return isPowerOfTwo(BO->getOperand(0), TD, Depth); + PossiblyExactOperator *PEO = cast<PossiblyExactOperator>(V); + if (PEO->isExact()) + return isPowerOfTwo(PEO->getOperand(0), TD, Depth); } return false; |