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Implement the AsmPrinter::getPreferredAlignmentLog method. 

llvm-svn: 25978
This commit is contained in:
Chris Lattner 2006-02-05 01:29:18 +00:00
parent 9d0b2f7b50
commit a9b2525d3e
1 changed files with 16 additions and 0 deletions
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16
llvm/lib/CodeGen/AsmPrinter.cpp
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@ -171,6 +171,22 @@ void AsmPrinter::EmitXXStructorList(Constant *List) {
}
}
/// getPreferredAlignmentLog - Return the preferred alignment of the
/// specified global, returned in log form. This includes an explicitly
/// requested alignment (if the global has one).
unsigned AsmPrinter::getPreferredAlignmentLog(const GlobalVariable *GV) const {
unsigned Alignment = TM.getTargetData().getTypeAlignmentShift(GV->getType());
if (GV->getAlignment() > (1U << Alignment))
Alignment = Log2_32(GV->getAlignment());
if (GV->hasInitializer() && Alignment < 4) {
// If the global is not external, see if it is large. If so, give it a
// larger alignment.
if (TM.getTargetData().getTypeSize(GV->getType()->getElementType()) > 128)
Alignment = 4; // 16-byte alignment.
}
return Alignment;
}
// EmitAlignment - Emit an alignment directive to the specified power of two.
void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {