//===----------------------------------------------------------------------===//
//
// This file implements the Attributes, AttributeImpl, AttrBuilder,
-// AttributeListImpl, and AttrListPtr classes.
+// AttributeListImpl, and AttributeSet classes.
//
//===----------------------------------------------------------------------===//
#include "llvm/Attributes.h"
#include "AttributesImpl.h"
#include "LLVMContextImpl.h"
-#include "llvm/Type.h"
-#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Atomic.h"
-#include "llvm/Support/Mutex.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Mutex.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Type.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
uint64_t EncodedAttrs = Attrs.Raw() & 0xffff;
if (Attrs.hasAttribute(Attributes::Alignment))
EncodedAttrs |= Attrs.getAlignment() << 16;
- EncodedAttrs |= (Attrs.Raw() & (0xfffULL << 21)) << 11;
+ EncodedAttrs |= (Attrs.Raw() & (0xffffULL << 21)) << 11;
return EncodedAttrs;
}
AttrBuilder B(EncodedAttrs & 0xffff);
if (Alignment)
B.addAlignmentAttr(Alignment);
- B.addRawValue((EncodedAttrs & (0xfffULL << 32)) >> 11);
+ B.addRawValue((EncodedAttrs & (0xffffULL << 32)) >> 11);
return Attributes::get(C, B);
}
Result += "nonlazybind ";
if (hasAttribute(Attributes::AddressSafety))
Result += "address_safety ";
+ if (hasAttribute(Attributes::MinSize))
+ Result += "minsize ";
if (hasAttribute(Attributes::StackAlignment)) {
Result += "alignstack(";
Result += utostr(getStackAlignment());
uint64_t AttrBuilder::getAlignment() const {
if (!hasAlignmentAttr())
return 0;
- return 1U <<
+ return 1ULL <<
(((Bits & AttributesImpl::getAttrMask(Attributes::Alignment)) >> 16) - 1);
}
uint64_t AttrBuilder::getStackAlignment() const {
if (!hasAlignmentAttr())
return 0;
- return 1U <<
+ return 1ULL <<
(((Bits & AttributesImpl::getAttrMask(Attributes::StackAlignment))>>26)-1);
}
case Attributes::UWTable: return 1 << 30;
case Attributes::NonLazyBind: return 1U << 31;
case Attributes::AddressSafety: return 1ULL << 32;
+ case Attributes::MinSize: return 1ULL << 33;
}
llvm_unreachable("Unsupported attribute type");
}
// AttributeListImpl Definition
//===----------------------------------------------------------------------===//
-namespace llvm {
- class AttributeListImpl;
-}
-
-static ManagedStatic<FoldingSet<AttributeListImpl> > AttributesLists;
-
-namespace llvm {
-static ManagedStatic<sys::SmartMutex<true> > ALMutex;
-
-class AttributeListImpl : public FoldingSetNode {
- sys::cas_flag RefCount;
-
- // AttributesList is uniqued, these should not be publicly available.
- void operator=(const AttributeListImpl &) LLVM_DELETED_FUNCTION;
- AttributeListImpl(const AttributeListImpl &) LLVM_DELETED_FUNCTION;
- ~AttributeListImpl(); // Private implementation
-public:
- SmallVector<AttributeWithIndex, 4> Attrs;
-
- AttributeListImpl(ArrayRef<AttributeWithIndex> attrs)
- : Attrs(attrs.begin(), attrs.end()) {
- RefCount = 0;
- }
-
- void AddRef() {
- sys::SmartScopedLock<true> Lock(*ALMutex);
- ++RefCount;
- }
- void DropRef() {
- sys::SmartScopedLock<true> Lock(*ALMutex);
- if (!AttributesLists.isConstructed())
- return;
- sys::cas_flag new_val = --RefCount;
- if (new_val == 0)
- delete this;
- }
-
- void Profile(FoldingSetNodeID &ID) const {
- Profile(ID, Attrs);
- }
- static void Profile(FoldingSetNodeID &ID, ArrayRef<AttributeWithIndex> Attrs){
- for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
- ID.AddInteger(Attrs[i].Attrs.Raw());
- ID.AddInteger(Attrs[i].Index);
- }
- }
-};
-
-} // end llvm namespace
-
-AttributeListImpl::~AttributeListImpl() {
- // NOTE: Lock must be acquired by caller.
- AttributesLists->RemoveNode(this);
-}
-
-AttrListPtr AttrListPtr::get(ArrayRef<AttributeWithIndex> Attrs) {
+AttributeSet AttributeSet::get(LLVMContext &C,
+ ArrayRef<AttributeWithIndex> Attrs) {
// If there are no attributes then return a null AttributesList pointer.
if (Attrs.empty())
- return AttrListPtr();
+ return AttributeSet();
#ifndef NDEBUG
for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
#endif
// Otherwise, build a key to look up the existing attributes.
+ LLVMContextImpl *pImpl = C.pImpl;
FoldingSetNodeID ID;
AttributeListImpl::Profile(ID, Attrs);
- void *InsertPos;
-
- sys::SmartScopedLock<true> Lock(*ALMutex);
- AttributeListImpl *PAL =
- AttributesLists->FindNodeOrInsertPos(ID, InsertPos);
+ void *InsertPoint;
+ AttributeListImpl *PA = pImpl->AttrsLists.FindNodeOrInsertPos(ID,
+ InsertPoint);
// If we didn't find any existing attributes of the same shape then
// create a new one and insert it.
- if (!PAL) {
- PAL = new AttributeListImpl(Attrs);
- AttributesLists->InsertNode(PAL, InsertPos);
+ if (!PA) {
+ PA = new AttributeListImpl(Attrs);
+ pImpl->AttrsLists.InsertNode(PA, InsertPoint);
}
// Return the AttributesList that we found or created.
- return AttrListPtr(PAL);
+ return AttributeSet(PA);
}
//===----------------------------------------------------------------------===//
-// AttrListPtr Method Implementations
+// AttributeSet Method Implementations
//===----------------------------------------------------------------------===//
-AttrListPtr::AttrListPtr(AttributeListImpl *LI) : AttrList(LI) {
- if (LI) LI->AddRef();
-}
-
-AttrListPtr::AttrListPtr(const AttrListPtr &P) : AttrList(P.AttrList) {
- if (AttrList) AttrList->AddRef();
-}
-
-const AttrListPtr &AttrListPtr::operator=(const AttrListPtr &RHS) {
- sys::SmartScopedLock<true> Lock(*ALMutex);
+const AttributeSet &AttributeSet::operator=(const AttributeSet &RHS) {
if (AttrList == RHS.AttrList) return *this;
- if (AttrList) AttrList->DropRef();
+
AttrList = RHS.AttrList;
- if (AttrList) AttrList->AddRef();
return *this;
}
-AttrListPtr::~AttrListPtr() {
- if (AttrList) AttrList->DropRef();
-}
-
/// getNumSlots - Return the number of slots used in this attribute list.
/// This is the number of arguments that have an attribute set on them
/// (including the function itself).
-unsigned AttrListPtr::getNumSlots() const {
+unsigned AttributeSet::getNumSlots() const {
return AttrList ? AttrList->Attrs.size() : 0;
}
/// getSlot - Return the AttributeWithIndex at the specified slot. This
/// holds a number plus a set of attributes.
-const AttributeWithIndex &AttrListPtr::getSlot(unsigned Slot) const {
+const AttributeWithIndex &AttributeSet::getSlot(unsigned Slot) const {
assert(AttrList && Slot < AttrList->Attrs.size() && "Slot # out of range!");
return AttrList->Attrs[Slot];
}
/// getAttributes - The attributes for the specified index are returned.
/// Attributes for the result are denoted with Idx = 0. Function notes are
/// denoted with idx = ~0.
-Attributes AttrListPtr::getAttributes(unsigned Idx) const {
+Attributes AttributeSet::getAttributes(unsigned Idx) const {
if (AttrList == 0) return Attributes();
const SmallVector<AttributeWithIndex, 4> &Attrs = AttrList->Attrs;
/// hasAttrSomewhere - Return true if the specified attribute is set for at
/// least one parameter or for the return value.
-bool AttrListPtr::hasAttrSomewhere(Attributes::AttrVal Attr) const {
+bool AttributeSet::hasAttrSomewhere(Attributes::AttrVal Attr) const {
if (AttrList == 0) return false;
const SmallVector<AttributeWithIndex, 4> &Attrs = AttrList->Attrs;
for (unsigned i = 0, e = Attrs.size(); i != e; ++i)
if (Attrs[i].Attrs.hasAttribute(Attr))
return true;
+
return false;
}
-unsigned AttrListPtr::getNumAttrs() const {
+unsigned AttributeSet::getNumAttrs() const {
return AttrList ? AttrList->Attrs.size() : 0;
}
-Attributes &AttrListPtr::getAttributesAtIndex(unsigned i) const {
+Attributes &AttributeSet::getAttributesAtIndex(unsigned i) const {
assert(AttrList && "Trying to get an attribute from an empty list!");
assert(i < AttrList->Attrs.size() && "Index out of range!");
return AttrList->Attrs[i].Attrs;
}
-AttrListPtr AttrListPtr::addAttr(LLVMContext &C, unsigned Idx,
+AttributeSet AttributeSet::addAttr(LLVMContext &C, unsigned Idx,
Attributes Attrs) const {
Attributes OldAttrs = getAttributes(Idx);
#ifndef NDEBUG
OldAttrList.begin()+i, OldAttrList.end());
}
- return get(NewAttrList);
+ return get(C, NewAttrList);
}
-AttrListPtr AttrListPtr::removeAttr(LLVMContext &C, unsigned Idx,
+AttributeSet AttributeSet::removeAttr(LLVMContext &C, unsigned Idx,
Attributes Attrs) const {
#ifndef NDEBUG
// FIXME it is not obvious how this should work for alignment.
assert(!Attrs.hasAttribute(Attributes::Alignment) &&
"Attempt to exclude alignment!");
#endif
- if (AttrList == 0) return AttrListPtr();
+ if (AttrList == 0) return AttributeSet();
Attributes OldAttrs = getAttributes(Idx);
AttrBuilder NewAttrs =
NewAttrList.insert(NewAttrList.end(),
OldAttrList.begin()+i, OldAttrList.end());
- return get(NewAttrList);
+ return get(C, NewAttrList);
}
-void AttrListPtr::dump() const {
+void AttributeSet::dump() const {
dbgs() << "PAL[ ";
for (unsigned i = 0; i < getNumSlots(); ++i) {
const AttributeWithIndex &PAWI = getSlot(i);
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