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Implement the AsmPrinter::getPreferredAlignmentLog method.
llvm-svn: 25978
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@ -171,6 +171,22 @@ void AsmPrinter::EmitXXStructorList(Constant *List) {
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}
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}
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/// getPreferredAlignmentLog - Return the preferred alignment of the
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/// specified global, returned in log form. This includes an explicitly
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/// requested alignment (if the global has one).
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unsigned AsmPrinter::getPreferredAlignmentLog(const GlobalVariable *GV) const {
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unsigned Alignment = TM.getTargetData().getTypeAlignmentShift(GV->getType());
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if (GV->getAlignment() > (1U << Alignment))
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Alignment = Log2_32(GV->getAlignment());
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if (GV->hasInitializer() && Alignment < 4) {
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// If the global is not external, see if it is large. If so, give it a
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// larger alignment.
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if (TM.getTargetData().getTypeSize(GV->getType()->getElementType()) > 128)
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Alignment = 4; // 16-byte alignment.
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}
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return Alignment;
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}
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// EmitAlignment - Emit an alignment directive to the specified power of two.
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void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {
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