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Use iterators instead of relying upon a bitmask of attributes to remove attributes from an AttrBuilder. 

llvm-svn: 174123
This commit is contained in:
Bill Wendling 2013-02-01 00:13:50 +00:00
parent b3e2d3a638
commit f1c94e3241
1 changed files with 18 additions and 12 deletions
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30
llvm/lib/IR/Attributes.cpp
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@ -749,7 +749,7 @@ AttributeSet::iterator AttributeSet::begin(unsigned Idx) {
AttributeSet::iterator AttributeSet::end(unsigned Idx) {
if (!pImpl)
return ArrayRef<Attribute>().end();
return pImpl->begin(Idx);
return pImpl->end(Idx);
}
//===----------------------------------------------------------------------===//
@ -852,18 +852,24 @@ AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
}
AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
uint64_t Mask = A.Raw(Index);
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
I = Attribute::AttrKind(I + 1)) {
if (Mask & AttributeImpl::getAttrMask(I)) {
Attrs.erase(I);
if (I == Attribute::Alignment)
Alignment = 0;
else if (I == Attribute::StackAlignment)
StackAlignment = 0;
unsigned Idx = ~0U;
for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
if (A.getSlotIndex(I) == Index) {
Idx = I;
break;
}
assert(Idx != ~0U && "Couldn't find index in AttributeSet!");
for (AttributeSet::iterator I = A.begin(Idx), E = A.end(Idx); I != E; ++I) {
ConstantInt *CI = cast<ConstantInt>(I->getAttributeKind());
Attribute::AttrKind Kind = Attribute::AttrKind(CI->getZExtValue());
Attrs.erase(Kind);
if (Kind == Attribute::Alignment)
Alignment = 0;
else if (Kind == Attribute::StackAlignment)
StackAlignment = 0;
}
return *this;