diff options
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 22f1c144ea..8192c1471f 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -103,14 +103,16 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask, if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) { unsigned Align = GV->getAlignment(); if (Align == 0 && TD && GV->getType()->getElementType()->isSized()) { - Type *ObjectType = GV->getType()->getElementType(); - // If the object is defined in the current Module, we'll be giving - // it the preferred alignment. Otherwise, we have to assume that it - // may only have the minimum ABI alignment. - if (!GV->isDeclaration() && !GV->mayBeOverridden()) - Align = TD->getPrefTypeAlignment(ObjectType); - else - Align = TD->getABITypeAlignment(ObjectType); + if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) { + Type *ObjectType = GVar->getType()->getElementType(); + // If the object is defined in the current Module, we'll be giving + // it the preferred alignment. Otherwise, we have to assume that it + // may only have the minimum ABI alignment. + if (!GVar->isDeclaration() && !GVar->mayBeOverridden()) + Align = TD->getPreferredAlignment(GVar); + else + Align = TD->getABITypeAlignment(ObjectType); + } } if (Align > 0) KnownZero = Mask & APInt::getLowBitsSet(BitWidth, |