diff options
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index 9fe538d..236db5e 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -453,8 +453,9 @@ static void computeKnownBitsMul(const Value *Op0, const Value *Op1, bool NSW, bool SelfMultiply = Op0 == Op1; // TODO: SelfMultiply can be poison, but not undef. - SelfMultiply &= - isGuaranteedNotToBeUndefOrPoison(Op0, Q.AC, Q.CxtI, Q.DT, Depth + 1); + if (SelfMultiply) + SelfMultiply &= + isGuaranteedNotToBeUndefOrPoison(Op0, Q.AC, Q.CxtI, Q.DT, Depth + 1); Known = KnownBits::mul(Known, Known2, SelfMultiply); // Only make use of no-wrap flags if we failed to compute the sign bit |