// Attribute Construction Methods
//===----------------------------------------------------------------------===//
-Attribute Attribute::get(LLVMContext &Context, AttrKind Kind) {
- AttrBuilder B;
- return Attribute::get(Context, B.addAttribute(Kind));
-}
-
-Attribute Attribute::get(LLVMContext &Context, AttrBuilder &B) {
- // If there are no attributes, return an empty Attribute class.
- if (!B.hasAttributes())
- return Attribute();
-
- // Otherwise, build a key to look up the existing attributes.
+Attribute Attribute::get(LLVMContext &Context, Constant *Kind, Constant *Val) {
LLVMContextImpl *pImpl = Context.pImpl;
FoldingSetNodeID ID;
- ConstantInt *CI = ConstantInt::get(Type::getInt64Ty(Context), B.Raw());
- ID.AddPointer(CI);
+ ID.AddPointer(Kind);
+ if (Val) ID.AddPointer(Val);
void *InsertPoint;
AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
if (!PA) {
// If we didn't find any existing attributes of the same shape then create a
// new one and insert it.
- PA = new AttributeImpl(Context, CI);
+ PA = new AttributeImpl(Context, Kind, Val);
pImpl->AttrsSet.InsertNode(PA, InsertPoint);
}
return Attribute(PA);
}
+Attribute Attribute::get(LLVMContext &Context, AttrKind Kind, Constant *Val) {
+ ConstantInt *KindVal = ConstantInt::get(Type::getInt64Ty(Context), Kind);
+ return get(Context, KindVal, Val);
+}
+
Attribute Attribute::getWithAlignment(LLVMContext &Context, uint64_t Align) {
- AttrBuilder B;
- return get(Context, B.addAlignmentAttr(Align));
+ assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
+ assert(Align <= 0x40000000 && "Alignment too large.");
+ return get(Context, Alignment,
+ ConstantInt::get(Type::getInt64Ty(Context), Align));
}
Attribute Attribute::getWithStackAlignment(LLVMContext &Context,
uint64_t Align) {
- AttrBuilder B;
- return get(Context, B.addStackAlignmentAttr(Align));
+ assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
+ assert(Align <= 0x100 && "Alignment too large.");
+ return get(Context, StackAlignment,
+ ConstantInt::get(Type::getInt64Ty(Context), Align));
}
//===----------------------------------------------------------------------===//
return pImpl && pImpl->hasAttribute(Val);
}
-bool Attribute::hasAttributes() const {
- return pImpl && pImpl->hasAttributes();
+Constant *Attribute::getAttributeKind() const {
+ return pImpl ? pImpl->getAttributeKind() : 0;
+}
+
+Constant *Attribute::getAttributeValues() const {
+ return pImpl ? pImpl->getAttributeValues() : 0;
}
/// This returns the alignment field of an attribute as a byte alignment value.
unsigned Attribute::getAlignment() const {
- if (!hasAttribute(Attribute::Alignment))
- return 0;
+ assert(hasAttribute(Attribute::Alignment) &&
+ "Trying to get alignment from non-alignment attribute!");
return pImpl->getAlignment();
}
/// This returns the stack alignment field of an attribute as a byte alignment
/// value.
unsigned Attribute::getStackAlignment() const {
- if (!hasAttribute(Attribute::StackAlignment))
- return 0;
+ assert(hasAttribute(Attribute::StackAlignment) &&
+ "Trying to get alignment from non-alignment attribute!");
return pImpl->getStackAlignment();
}
std::string Attribute::getAsString() const {
- if (hasAttribute(Attribute::ZExt))
- return "zeroext";
- if (hasAttribute(Attribute::SExt))
- return "signext";
- if (hasAttribute(Attribute::NoReturn))
- return "noreturn";
- if (hasAttribute(Attribute::NoUnwind))
- return "nounwind";
- if (hasAttribute(Attribute::UWTable))
- return "uwtable";
- if (hasAttribute(Attribute::ReturnsTwice))
- return "returns_twice";
+ if (!pImpl) return "";
+
+ if (hasAttribute(Attribute::AddressSafety))
+ return "address_safety";
+ if (hasAttribute(Attribute::AlwaysInline))
+ return "alwaysinline";
+ if (hasAttribute(Attribute::ByVal))
+ return "byval";
+ if (hasAttribute(Attribute::InlineHint))
+ return "inlinehint";
if (hasAttribute(Attribute::InReg))
return "inreg";
+ if (hasAttribute(Attribute::MinSize))
+ return "minsize";
+ if (hasAttribute(Attribute::Naked))
+ return "naked";
+ if (hasAttribute(Attribute::Nest))
+ return "nest";
if (hasAttribute(Attribute::NoAlias))
return "noalias";
if (hasAttribute(Attribute::NoCapture))
return "nocapture";
- if (hasAttribute(Attribute::StructRet))
- return "sret";
- if (hasAttribute(Attribute::ByVal))
- return "byval";
- if (hasAttribute(Attribute::Nest))
- return "nest";
+ if (hasAttribute(Attribute::NoDuplicate))
+ return "noduplicate";
+ if (hasAttribute(Attribute::NoImplicitFloat))
+ return "noimplicitfloat";
+ if (hasAttribute(Attribute::NoInline))
+ return "noinline";
+ if (hasAttribute(Attribute::NonLazyBind))
+ return "nonlazybind";
+ if (hasAttribute(Attribute::NoRedZone))
+ return "noredzone";
+ if (hasAttribute(Attribute::NoReturn))
+ return "noreturn";
+ if (hasAttribute(Attribute::NoUnwind))
+ return "nounwind";
+ if (hasAttribute(Attribute::OptimizeForSize))
+ return "optsize";
if (hasAttribute(Attribute::ReadNone))
return "readnone";
if (hasAttribute(Attribute::ReadOnly))
return "readonly";
- if (hasAttribute(Attribute::OptimizeForSize))
- return "optsize";
- if (hasAttribute(Attribute::NoInline))
- return "noinline";
- if (hasAttribute(Attribute::InlineHint))
- return "inlinehint";
- if (hasAttribute(Attribute::AlwaysInline))
- return "alwaysinline";
+ if (hasAttribute(Attribute::ReturnsTwice))
+ return "returns_twice";
+ if (hasAttribute(Attribute::SExt))
+ return "signext";
if (hasAttribute(Attribute::StackProtect))
return "ssp";
if (hasAttribute(Attribute::StackProtectReq))
return "sspreq";
if (hasAttribute(Attribute::StackProtectStrong))
return "sspstrong";
- if (hasAttribute(Attribute::NoRedZone))
- return "noredzone";
- if (hasAttribute(Attribute::NoImplicitFloat))
- return "noimplicitfloat";
- if (hasAttribute(Attribute::Naked))
- return "naked";
- if (hasAttribute(Attribute::NonLazyBind))
- return "nonlazybind";
- if (hasAttribute(Attribute::AddressSafety))
- return "address_safety";
- if (hasAttribute(Attribute::MinSize))
- return "minsize";
+ if (hasAttribute(Attribute::StructRet))
+ return "sret";
+ if (hasAttribute(Attribute::UWTable))
+ return "uwtable";
+ if (hasAttribute(Attribute::ZExt))
+ return "zeroext";
+
+ // FIXME: These should be output like this:
+ //
+ // align=4
+ // alignstack=8
+ //
if (hasAttribute(Attribute::StackAlignment)) {
std::string Result;
Result += "alignstack(";
std::string Result;
Result += "align ";
Result += utostr(getAlignment());
- Result += "";
return Result;
}
- if (hasAttribute(Attribute::NoDuplicate))
- return "noduplicate";
+
+ // Convert target-dependent attributes to strings of the form:
+ //
+ // "kind"
+ // "kind" = "value"
+ // "kind" = ( "value1" "value2" "value3" )
+ //
+ if (ConstantDataArray *CDA =
+ dyn_cast<ConstantDataArray>(pImpl->getAttributeKind())) {
+ std::string Result;
+ Result += '\"' + CDA->getAsString().str() + '"';
+
+ Constant *Vals = pImpl->getAttributeValues();
+ if (!Vals) return Result;
+
+ // FIXME: This should support more than just ConstantDataArrays. Also,
+ // support a vector of attribute values.
+
+ Result += " = ";
+ Result += '\"' + cast<ConstantDataArray>(Vals)->getAsString().str() + '"';
+
+ return Result;
+ }
llvm_unreachable("Unknown attribute");
}
bool Attribute::operator==(AttrKind K) const {
- return pImpl && *pImpl == K;
+ return (pImpl && *pImpl == K) || (!pImpl && K == None);
}
bool Attribute::operator!=(AttrKind K) const {
return !(*this == K);
return *pImpl < *A.pImpl;
}
-uint64_t Attribute::Raw() const {
- return pImpl ? pImpl->Raw() : 0;
-}
-
//===----------------------------------------------------------------------===//
// AttributeImpl Definition
//===----------------------------------------------------------------------===//
-AttributeImpl::AttributeImpl(LLVMContext &C, Attribute::AttrKind data)
- : Context(C) {
- Data = ConstantInt::get(Type::getInt64Ty(C), data);
-}
-AttributeImpl::AttributeImpl(LLVMContext &C, Attribute::AttrKind data,
- ArrayRef<Constant*> values)
- : Context(C) {
- Data = ConstantInt::get(Type::getInt64Ty(C), data);
- Vals.reserve(values.size());
- Vals.append(values.begin(), values.end());
-}
-AttributeImpl::AttributeImpl(LLVMContext &C, StringRef data)
- : Context(C) {
- Data = ConstantDataArray::getString(C, data);
-}
-
bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
- return (Raw() & getAttrMask(A)) != 0;
-}
-
-bool AttributeImpl::hasAttributes() const {
- return Raw() != 0;
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(Kind))
+ return CI->getZExtValue() == A;
+ return false;
}
uint64_t AttributeImpl::getAlignment() const {
- uint64_t Mask = Raw() & getAttrMask(Attribute::Alignment);
- return 1ULL << ((Mask >> 16) - 1);
+ assert(hasAttribute(Attribute::Alignment) &&
+ "Trying to retrieve the alignment from a non-alignment attr!");
+ return cast<ConstantInt>(Values)->getZExtValue();
}
uint64_t AttributeImpl::getStackAlignment() const {
- uint64_t Mask = Raw() & getAttrMask(Attribute::StackAlignment);
- return 1ULL << ((Mask >> 26) - 1);
+ assert(hasAttribute(Attribute::StackAlignment) &&
+ "Trying to retrieve the stack alignment from a non-alignment attr!");
+ return cast<ConstantInt>(Values)->getZExtValue();
}
-bool AttributeImpl::operator==(Attribute::AttrKind Kind) const {
- if (ConstantInt *CI = dyn_cast<ConstantInt>(Data))
- return CI->getZExtValue() == Kind;
+bool AttributeImpl::operator==(Attribute::AttrKind kind) const {
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(Kind))
+ return CI->getZExtValue() == kind;
return false;
}
-bool AttributeImpl::operator!=(Attribute::AttrKind Kind) const {
- return !(*this == Kind);
+bool AttributeImpl::operator!=(Attribute::AttrKind kind) const {
+ return !(*this == kind);
}
-bool AttributeImpl::operator==(StringRef Kind) const {
- if (ConstantDataArray *CDA = dyn_cast<ConstantDataArray>(Data))
+bool AttributeImpl::operator==(StringRef kind) const {
+ if (ConstantDataArray *CDA = dyn_cast<ConstantDataArray>(Kind))
if (CDA->isString())
- return CDA->getAsString() == Kind;
+ return CDA->getAsString() == kind;
return false;
}
-bool AttributeImpl::operator!=(StringRef Kind) const {
- return !(*this == Kind);
+bool AttributeImpl::operator!=(StringRef kind) const {
+ return !(*this == kind);
}
bool AttributeImpl::operator<(const AttributeImpl &AI) const {
- if (!Data && !AI.Data) return false;
- if (!Data && AI.Data) return true;
- if (Data && !AI.Data) return false;
+ // This sorts the attributes with Attribute::AttrKinds coming first (sorted
+ // relative to their enum value) and then strings.
- ConstantInt *ThisCI = dyn_cast<ConstantInt>(Data);
- ConstantInt *ThatCI = dyn_cast<ConstantInt>(AI.Data);
+ if (!Kind && !AI.Kind) return false;
+ if (!Kind && AI.Kind) return true;
+ if (Kind && !AI.Kind) return false;
- ConstantDataArray *ThisCDA = dyn_cast<ConstantDataArray>(Data);
- ConstantDataArray *ThatCDA = dyn_cast<ConstantDataArray>(AI.Data);
+ ConstantInt *ThisCI = dyn_cast<ConstantInt>(Kind);
+ ConstantInt *ThatCI = dyn_cast<ConstantInt>(AI.Kind);
+
+ ConstantDataArray *ThisCDA = dyn_cast<ConstantDataArray>(Kind);
+ ConstantDataArray *ThatCDA = dyn_cast<ConstantDataArray>(AI.Kind);
if (ThisCI && ThatCI)
return ThisCI->getZExtValue() < ThatCI->getZExtValue();
return ThisCDA->getAsString() < ThatCDA->getAsString();
}
-uint64_t AttributeImpl::Raw() const {
- // FIXME: Remove this.
- return cast<ConstantInt>(Data)->getZExtValue();
-}
-
uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
// FIXME: Remove this.
switch (Val) {
std::string AttributeSetNode::getAsString() const {
std::string Str = "";
for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
- E = AttrList.end(); I != E; ++I) {
- if (I != AttrList.begin()) Str += " ";
+ E = AttrList.end(); I != E; ) {
Str += I->getAsString();
+ if (++I != E) Str += " ";
}
return Str;
}
for (unsigned I = 0, E = getNumAttributes(); I != E; ++I) {
if (getSlotIndex(I) != Index) continue;
const AttributeSetNode *ASN = AttrNodes[I].second;
- AttrBuilder B;
+ uint64_t Mask = 0;
for (AttributeSetNode::const_iterator II = ASN->begin(),
- IE = ASN->end(); II != IE; ++II)
- B.addAttributes(*II);
- return B.Raw();
+ IE = ASN->end(); II != IE; ++II) {
+ Attribute Attr = *II;
+ ConstantInt *Kind = cast<ConstantInt>(Attr.getAttributeKind());
+ Attribute::AttrKind KindVal = Attribute::AttrKind(Kind->getZExtValue());
+
+ if (KindVal == Attribute::Alignment)
+ Mask |= (Log2_32(ASN->getAlignment()) + 1) << 16;
+ else if (KindVal == Attribute::StackAlignment)
+ Mask |= (Log2_32(ASN->getStackAlignment()) + 1) << 26;
+ else
+ Mask |= AttributeImpl::getAttrMask(KindVal);
+ }
+
+ return Mask;
}
return 0;
for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
assert((!i || Attrs[i-1].first <= Attrs[i].first) &&
"Misordered Attributes list!");
- assert(Attrs[i].second.hasAttributes() &&
+ assert(Attrs[i].second != Attribute::None &&
"Pointless attribute!");
}
#endif
if (Attrs.getSlotIndex(I) == Idx) {
for (AttributeSetImpl::const_iterator II = Attrs.pImpl->begin(I),
IE = Attrs.pImpl->end(I); II != IE; ++II)
- B.addAttributes(*II);
+ B.addAttribute(*II);
break;
}
AttrSet.push_back(getSlotAttributes(I));
}
- // Now add the attribute into the correct slot. There may already be an
+ // Now remove the attribute from the correct slot. There may already be an
// AttributeSet there.
AttrBuilder B(AS, Idx);
for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
if (Attrs.getSlotIndex(I) == Idx) {
- for (AttributeSetImpl::const_iterator II = Attrs.pImpl->begin(I),
- IE = Attrs.pImpl->end(I); II != IE; ++II)
- B.removeAttributes(*II);
+ B.removeAttributes(Attrs.pImpl->getSlotAttributes(I), Idx);
break;
}
return 0;
}
+AttributeSet::iterator AttributeSet::begin(unsigned Idx) const {
+ if (!pImpl)
+ return ArrayRef<Attribute>().begin();
+ return pImpl->begin(Idx);
+}
+
+AttributeSet::iterator AttributeSet::end(unsigned Idx) const {
+ if (!pImpl)
+ return ArrayRef<Attribute>().end();
+ return pImpl->end(Idx);
+}
+
//===----------------------------------------------------------------------===//
// AttributeSet Introspection Methods
//===----------------------------------------------------------------------===//
AttributeSetImpl *pImpl = AS.pImpl;
if (!pImpl) return;
- AttrBuilder B;
-
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
if (pImpl->getSlotIndex(I) != Idx) continue;
- for (AttributeSetNode::const_iterator II = pImpl->begin(I),
+ for (AttributeSetImpl::const_iterator II = pImpl->begin(I),
IE = pImpl->end(I); II != IE; ++II)
- B.addAttributes(*II);
+ addAttribute(*II);
break;
}
-
- if (!B.hasAttributes()) return;
-
- uint64_t Mask = B.Raw();
-
- for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
- I = Attribute::AttrKind(I + 1)) {
- if (uint64_t A = (Mask & AttributeImpl::getAttrMask(I))) {
- Attrs.insert(I);
-
- if (I == Attribute::Alignment)
- Alignment = 1ULL << ((A >> 16) - 1);
- else if (I == Attribute::StackAlignment)
- StackAlignment = 1ULL << ((A >> 26)-1);
- }
- }
}
void AttrBuilder::clear() {
}
AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
+ assert(Val != Attribute::Alignment && Val != Attribute::StackAlignment &&
+ "Adding alignment attribute without adding alignment value!");
Attrs.insert(Val);
return *this;
}
+AttrBuilder &AttrBuilder::addAttribute(Attribute Attr) {
+ ConstantInt *Kind = cast<ConstantInt>(Attr.getAttributeKind());
+ Attribute::AttrKind KindVal = Attribute::AttrKind(Kind->getZExtValue());
+ Attrs.insert(KindVal);
+
+ if (KindVal == Attribute::Alignment)
+ Alignment = Attr.getAlignment();
+ else if (KindVal == Attribute::StackAlignment)
+ StackAlignment = Attr.getStackAlignment();
+ return *this;
+}
+
AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
Attrs.erase(Val);
+
if (Val == Attribute::Alignment)
Alignment = 0;
else if (Val == Attribute::StackAlignment)
return *this;
}
-AttrBuilder &AttrBuilder::addAttributes(Attribute Attr) {
- uint64_t Mask = Attr.Raw();
-
- for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
- I = Attribute::AttrKind(I + 1))
- if ((Mask & AttributeImpl::getAttrMask(I)) != 0)
- Attrs.insert(I);
-
- if (Attr.getAlignment())
- Alignment = Attr.getAlignment();
- if (Attr.getStackAlignment())
- StackAlignment = Attr.getStackAlignment();
- return *this;
-}
+AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
+ unsigned Idx = ~0U;
+ for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
+ if (A.getSlotIndex(I) == Index) {
+ Idx = I;
+ break;
+ }
-AttrBuilder &AttrBuilder::removeAttributes(Attribute A) {
- uint64_t Mask = A.Raw();
+ assert(Idx != ~0U && "Couldn't find index in AttributeSet!");
- for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
- I = Attribute::AttrKind(I + 1)) {
- if (Mask & AttributeImpl::getAttrMask(I)) {
- Attrs.erase(I);
+ 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 (I == Attribute::Alignment)
- Alignment = 0;
- else if (I == Attribute::StackAlignment)
- StackAlignment = 0;
- }
+ if (Kind == Attribute::Alignment)
+ Alignment = 0;
+ else if (Kind == Attribute::StackAlignment)
+ StackAlignment = 0;
}
return *this;
return !Attrs.empty();
}
-bool AttrBuilder::hasAttributes(const Attribute &A) const {
- return Raw() & A.Raw();
+bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
+ 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 the index!");
+
+ for (AttributeSet::iterator I = A.begin(Idx), E = A.end(Idx);
+ I != E; ++I) {
+ Attribute Attr = *I;
+ // FIXME: Support StringRefs.
+ ConstantInt *Kind = cast<ConstantInt>(Attr.getAttributeKind());
+ Attribute::AttrKind KindVal = Attribute::AttrKind(Kind->getZExtValue());
+
+ if (Attrs.count(KindVal))
+ return true;
+ }
+
+ return false;
}
bool AttrBuilder::hasAlignmentAttr() const {
}
AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
+ // FIXME: Remove this in 4.0.
if (!Val) return *this;
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
return *this;
}
-uint64_t AttrBuilder::Raw() const {
- uint64_t Mask = 0;
-
- for (DenseSet<Attribute::AttrKind>::const_iterator I = Attrs.begin(),
- E = Attrs.end(); I != E; ++I) {
- Attribute::AttrKind Kind = *I;
-
- if (Kind == Attribute::Alignment)
- Mask |= (Log2_32(Alignment) + 1) << 16;
- else if (Kind == Attribute::StackAlignment)
- Mask |= (Log2_32(StackAlignment) + 1) << 26;
- else
- Mask |= AttributeImpl::getAttrMask(Kind);
- }
-
- return Mask;
-}
-
//===----------------------------------------------------------------------===//
// AttributeFuncs Function Defintions
//===----------------------------------------------------------------------===//
-Attribute AttributeFuncs::typeIncompatible(Type *Ty) {
+/// \brief Which attributes cannot be applied to a type.
+AttributeSet AttributeFuncs::typeIncompatible(Type *Ty, uint64_t Index) {
AttrBuilder Incompatible;
if (!Ty->isIntegerTy())
.addAttribute(Attribute::NoCapture)
.addAttribute(Attribute::StructRet);
- return Attribute::get(Ty->getContext(), Incompatible);
-}
-
-/// \brief This returns an integer containing an encoding of all the LLVM
-/// attributes found in the given attribute bitset. Any change to this encoding
-/// is a breaking change to bitcode compatibility.
-/// N.B. This should be used only by the bitcode reader!
-uint64_t AttributeFuncs::encodeLLVMAttributesForBitcode(AttributeSet Attrs,
- unsigned Index) {
- // FIXME: It doesn't make sense to store the alignment information as an
- // expanded out value, we should store it as a log2 value. However, we can't
- // just change that here without breaking bitcode compatibility. If this ever
- // becomes a problem in practice, we should introduce new tag numbers in the
- // bitcode file and have those tags use a more efficiently encoded alignment
- // field.
-
- // Store the alignment in the bitcode as a 16-bit raw value instead of a 5-bit
- // log2 encoded value. Shift the bits above the alignment up by 11 bits.
- uint64_t EncodedAttrs = Attrs.Raw(Index) & 0xffff;
- if (Attrs.hasAttribute(Index, Attribute::Alignment))
- EncodedAttrs |= Attrs.getParamAlignment(Index) << 16;
- EncodedAttrs |= (Attrs.Raw(Index) & (0xffffULL << 21)) << 11;
- return EncodedAttrs;
-}
-
-/// \brief This fills an AttrBuilder object with the LLVM attributes that have
-/// been decoded from the given integer. This function must stay in sync with
-/// 'encodeLLVMAttributesForBitcode'.
-/// N.B. This should be used only by the bitcode reader!
-void AttributeFuncs::decodeLLVMAttributesForBitcode(LLVMContext &C,
- AttrBuilder &B,
- uint64_t EncodedAttrs) {
- // The alignment is stored as a 16-bit raw value from bits 31--16. We shift
- // the bits above 31 down by 11 bits.
- unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16;
- assert((!Alignment || isPowerOf2_32(Alignment)) &&
- "Alignment must be a power of two.");
-
- if (Alignment)
- B.addAlignmentAttr(Alignment);
- B.addRawValue(((EncodedAttrs & (0xffffULL << 32)) >> 11) |
- (EncodedAttrs & 0xffff));
+ return AttributeSet::get(Ty->getContext(), Index, Incompatible);
}
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