No functionality change. Type::isSized() can be expensive, so avoid calling it
until after other inexpensive tests. llvm-svn: 152195
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@ -106,16 +106,18 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,
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// The address of an aligned GlobalValue has trailing zeros.
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if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
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unsigned Align = GV->getAlignment();
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if (Align == 0 && TD && GV->getType()->getElementType()->isSized()) {
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if (Align == 0 && TD) {
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if (GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) {
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Type *ObjectType = GVar->getType()->getElementType();
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// If the object is defined in the current Module, we'll be giving
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// it the preferred alignment. Otherwise, we have to assume that it
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// may only have the minimum ABI alignment.
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if (!GVar->isDeclaration() && !GVar->isWeakForLinker())
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Align = TD->getPreferredAlignment(GVar);
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else
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Align = TD->getABITypeAlignment(ObjectType);
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if (ObjectType->isSized()) {
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// If the object is defined in the current Module, we'll be giving
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// it the preferred alignment. Otherwise, we have to assume that it
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// may only have the minimum ABI alignment.
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if (!GVar->isDeclaration() && !GVar->isWeakForLinker())
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Align = TD->getPreferredAlignment(GVar);
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else
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Align = TD->getABITypeAlignment(ObjectType);
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}
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}
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}
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if (Align > 0)
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