1 //===-- Attributes.cpp - Implement AttributesList -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 // \brief This file implements the Attribute, AttributeImpl, AttrBuilder,
12 // AttributeSetImpl, and AttributeSet classes.
14 //===----------------------------------------------------------------------===//
16 #include "llvm/IR/Attributes.h"
17 #include "AttributeImpl.h"
18 #include "LLVMContextImpl.h"
19 #include "llvm/ADT/StringExtras.h"
20 #include "llvm/IR/Type.h"
21 #include "llvm/Support/Atomic.h"
22 #include "llvm/Support/Debug.h"
23 #include "llvm/Support/ManagedStatic.h"
24 #include "llvm/Support/Mutex.h"
25 #include "llvm/Support/raw_ostream.h"
29 //===----------------------------------------------------------------------===//
30 // Attribute Construction Methods
31 //===----------------------------------------------------------------------===//
33 Attribute Attribute::get(LLVMContext &Context, Attribute::AttrKind Kind,
35 LLVMContextImpl *pImpl = Context.pImpl;
38 if (Val) ID.AddInteger(Val);
41 AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
44 // If we didn't find any existing attributes of the same shape then create a
45 // new one and insert it.
47 PA = new EnumAttributeImpl(Kind);
49 PA = new AlignAttributeImpl(Kind, Val);
50 pImpl->AttrsSet.InsertNode(PA, InsertPoint);
53 // Return the Attribute that we found or created.
57 Attribute Attribute::get(LLVMContext &Context, StringRef Kind, StringRef Val) {
58 LLVMContextImpl *pImpl = Context.pImpl;
61 if (!Val.empty()) ID.AddString(Val);
64 AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
67 // If we didn't find any existing attributes of the same shape then create a
68 // new one and insert it.
69 PA = new StringAttributeImpl(Kind, Val);
70 pImpl->AttrsSet.InsertNode(PA, InsertPoint);
73 // Return the Attribute that we found or created.
77 Attribute Attribute::getWithAlignment(LLVMContext &Context, uint64_t Align) {
78 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
79 assert(Align <= 0x40000000 && "Alignment too large.");
80 return get(Context, Alignment, Align);
83 Attribute Attribute::getWithStackAlignment(LLVMContext &Context,
85 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
86 assert(Align <= 0x100 && "Alignment too large.");
87 return get(Context, StackAlignment, Align);
90 //===----------------------------------------------------------------------===//
91 // Attribute Accessor Methods
92 //===----------------------------------------------------------------------===//
94 bool Attribute::isEnumAttribute() const {
95 return pImpl && pImpl->isEnumAttribute();
98 bool Attribute::isAlignAttribute() const {
99 return pImpl && pImpl->isAlignAttribute();
102 bool Attribute::isStringAttribute() const {
103 return pImpl && pImpl->isStringAttribute();
106 Attribute::AttrKind Attribute::getKindAsEnum() const {
107 assert((isEnumAttribute() || isAlignAttribute()) &&
108 "Invalid attribute type to get the kind as an enum!");
109 return pImpl ? pImpl->getKindAsEnum() : None;
112 uint64_t Attribute::getValueAsInt() const {
113 assert(isAlignAttribute() &&
114 "Expected the attribute to be an alignment attribute!");
115 return pImpl ? pImpl->getValueAsInt() : 0;
118 StringRef Attribute::getKindAsString() const {
119 assert(isStringAttribute() &&
120 "Invalid attribute type to get the kind as a string!");
121 return pImpl ? pImpl->getKindAsString() : StringRef();
124 StringRef Attribute::getValueAsString() const {
125 assert(isStringAttribute() &&
126 "Invalid attribute type to get the value as a string!");
127 return pImpl ? pImpl->getValueAsString() : StringRef();
130 bool Attribute::hasAttribute(AttrKind Kind) const {
131 return (pImpl && pImpl->hasAttribute(Kind)) || (!pImpl && Kind == None);
134 bool Attribute::hasAttribute(StringRef Kind) const {
135 if (!isStringAttribute()) return false;
136 return pImpl && pImpl->hasAttribute(Kind);
139 /// This returns the alignment field of an attribute as a byte alignment value.
140 unsigned Attribute::getAlignment() const {
141 assert(hasAttribute(Attribute::Alignment) &&
142 "Trying to get alignment from non-alignment attribute!");
143 return pImpl->getValueAsInt();
146 /// This returns the stack alignment field of an attribute as a byte alignment
148 unsigned Attribute::getStackAlignment() const {
149 assert(hasAttribute(Attribute::StackAlignment) &&
150 "Trying to get alignment from non-alignment attribute!");
151 return pImpl->getValueAsInt();
154 std::string Attribute::getAsString(bool InAttrGrp) const {
155 if (!pImpl) return "";
157 if (hasAttribute(Attribute::SanitizeAddress))
158 return "sanitize_address";
159 if (hasAttribute(Attribute::AlwaysInline))
160 return "alwaysinline";
161 if (hasAttribute(Attribute::Builtin))
163 if (hasAttribute(Attribute::ByVal))
165 if (hasAttribute(Attribute::InlineHint))
167 if (hasAttribute(Attribute::InReg))
169 if (hasAttribute(Attribute::MinSize))
171 if (hasAttribute(Attribute::Naked))
173 if (hasAttribute(Attribute::Nest))
175 if (hasAttribute(Attribute::NoAlias))
177 if (hasAttribute(Attribute::NoBuiltin))
179 if (hasAttribute(Attribute::NoCapture))
181 if (hasAttribute(Attribute::NoDuplicate))
182 return "noduplicate";
183 if (hasAttribute(Attribute::NoImplicitFloat))
184 return "noimplicitfloat";
185 if (hasAttribute(Attribute::NoInline))
187 if (hasAttribute(Attribute::NonLazyBind))
188 return "nonlazybind";
189 if (hasAttribute(Attribute::NoRedZone))
191 if (hasAttribute(Attribute::NoReturn))
193 if (hasAttribute(Attribute::NoUnwind))
195 if (hasAttribute(Attribute::OptimizeForSize))
197 if (hasAttribute(Attribute::ReadNone))
199 if (hasAttribute(Attribute::ReadOnly))
201 if (hasAttribute(Attribute::Returned))
203 if (hasAttribute(Attribute::ReturnsTwice))
204 return "returns_twice";
205 if (hasAttribute(Attribute::SExt))
207 if (hasAttribute(Attribute::StackProtect))
209 if (hasAttribute(Attribute::StackProtectReq))
211 if (hasAttribute(Attribute::StackProtectStrong))
213 if (hasAttribute(Attribute::StructRet))
215 if (hasAttribute(Attribute::SanitizeThread))
216 return "sanitize_thread";
217 if (hasAttribute(Attribute::SanitizeMemory))
218 return "sanitize_memory";
219 if (hasAttribute(Attribute::UWTable))
221 if (hasAttribute(Attribute::ZExt))
223 if (hasAttribute(Attribute::Cold))
226 // FIXME: These should be output like this:
231 if (hasAttribute(Attribute::Alignment)) {
234 Result += (InAttrGrp) ? "=" : " ";
235 Result += utostr(getValueAsInt());
239 if (hasAttribute(Attribute::StackAlignment)) {
241 Result += "alignstack";
244 Result += utostr(getValueAsInt());
247 Result += utostr(getValueAsInt());
253 // Convert target-dependent attributes to strings of the form:
258 if (isStringAttribute()) {
260 Result += '\"' + getKindAsString().str() + '"';
262 StringRef Val = pImpl->getValueAsString();
263 if (Val.empty()) return Result;
265 Result += "=\"" + Val.str() + '"';
269 llvm_unreachable("Unknown attribute");
272 bool Attribute::operator<(Attribute A) const {
273 if (!pImpl && !A.pImpl) return false;
274 if (!pImpl) return true;
275 if (!A.pImpl) return false;
276 return *pImpl < *A.pImpl;
279 //===----------------------------------------------------------------------===//
280 // AttributeImpl Definition
281 //===----------------------------------------------------------------------===//
283 AttributeImpl::~AttributeImpl() {}
285 bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
286 if (isStringAttribute()) return false;
287 return getKindAsEnum() == A;
290 bool AttributeImpl::hasAttribute(StringRef Kind) const {
291 if (!isStringAttribute()) return false;
292 return getKindAsString() == Kind;
295 Attribute::AttrKind AttributeImpl::getKindAsEnum() const {
296 assert(isEnumAttribute() || isAlignAttribute());
297 return static_cast<const EnumAttributeImpl *>(this)->getEnumKind();
300 uint64_t AttributeImpl::getValueAsInt() const {
301 assert(isAlignAttribute());
302 return static_cast<const AlignAttributeImpl *>(this)->getAlignment();
305 StringRef AttributeImpl::getKindAsString() const {
306 assert(isStringAttribute());
307 return static_cast<const StringAttributeImpl *>(this)->getStringKind();
310 StringRef AttributeImpl::getValueAsString() const {
311 assert(isStringAttribute());
312 return static_cast<const StringAttributeImpl *>(this)->getStringValue();
315 bool AttributeImpl::operator<(const AttributeImpl &AI) const {
316 // This sorts the attributes with Attribute::AttrKinds coming first (sorted
317 // relative to their enum value) and then strings.
318 if (isEnumAttribute()) {
319 if (AI.isEnumAttribute()) return getKindAsEnum() < AI.getKindAsEnum();
320 if (AI.isAlignAttribute()) return true;
321 if (AI.isStringAttribute()) return true;
324 if (isAlignAttribute()) {
325 if (AI.isEnumAttribute()) return false;
326 if (AI.isAlignAttribute()) return getValueAsInt() < AI.getValueAsInt();
327 if (AI.isStringAttribute()) return true;
330 if (AI.isEnumAttribute()) return false;
331 if (AI.isAlignAttribute()) return false;
332 if (getKindAsString() == AI.getKindAsString())
333 return getValueAsString() < AI.getValueAsString();
334 return getKindAsString() < AI.getKindAsString();
337 uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
338 // FIXME: Remove this.
340 case Attribute::EndAttrKinds:
341 llvm_unreachable("Synthetic enumerators which should never get here");
343 case Attribute::None: return 0;
344 case Attribute::ZExt: return 1 << 0;
345 case Attribute::SExt: return 1 << 1;
346 case Attribute::NoReturn: return 1 << 2;
347 case Attribute::InReg: return 1 << 3;
348 case Attribute::StructRet: return 1 << 4;
349 case Attribute::NoUnwind: return 1 << 5;
350 case Attribute::NoAlias: return 1 << 6;
351 case Attribute::ByVal: return 1 << 7;
352 case Attribute::Nest: return 1 << 8;
353 case Attribute::ReadNone: return 1 << 9;
354 case Attribute::ReadOnly: return 1 << 10;
355 case Attribute::NoInline: return 1 << 11;
356 case Attribute::AlwaysInline: return 1 << 12;
357 case Attribute::OptimizeForSize: return 1 << 13;
358 case Attribute::StackProtect: return 1 << 14;
359 case Attribute::StackProtectReq: return 1 << 15;
360 case Attribute::Alignment: return 31 << 16;
361 case Attribute::NoCapture: return 1 << 21;
362 case Attribute::NoRedZone: return 1 << 22;
363 case Attribute::NoImplicitFloat: return 1 << 23;
364 case Attribute::Naked: return 1 << 24;
365 case Attribute::InlineHint: return 1 << 25;
366 case Attribute::StackAlignment: return 7 << 26;
367 case Attribute::ReturnsTwice: return 1 << 29;
368 case Attribute::UWTable: return 1 << 30;
369 case Attribute::NonLazyBind: return 1U << 31;
370 case Attribute::SanitizeAddress: return 1ULL << 32;
371 case Attribute::MinSize: return 1ULL << 33;
372 case Attribute::NoDuplicate: return 1ULL << 34;
373 case Attribute::StackProtectStrong: return 1ULL << 35;
374 case Attribute::SanitizeThread: return 1ULL << 36;
375 case Attribute::SanitizeMemory: return 1ULL << 37;
376 case Attribute::NoBuiltin: return 1ULL << 38;
377 case Attribute::Returned: return 1ULL << 39;
378 case Attribute::Cold: return 1ULL << 40;
379 case Attribute::Builtin: return 1ULL << 41;
381 llvm_unreachable("Unsupported attribute type");
384 //===----------------------------------------------------------------------===//
385 // AttributeSetNode Definition
386 //===----------------------------------------------------------------------===//
388 AttributeSetNode *AttributeSetNode::get(LLVMContext &C,
389 ArrayRef<Attribute> Attrs) {
393 // Otherwise, build a key to look up the existing attributes.
394 LLVMContextImpl *pImpl = C.pImpl;
397 SmallVector<Attribute, 8> SortedAttrs(Attrs.begin(), Attrs.end());
398 array_pod_sort(SortedAttrs.begin(), SortedAttrs.end());
400 for (SmallVectorImpl<Attribute>::iterator I = SortedAttrs.begin(),
401 E = SortedAttrs.end(); I != E; ++I)
405 AttributeSetNode *PA =
406 pImpl->AttrsSetNodes.FindNodeOrInsertPos(ID, InsertPoint);
408 // If we didn't find any existing attributes of the same shape then create a
409 // new one and insert it.
411 // Coallocate entries after the AttributeSetNode itself.
412 void *Mem = ::operator new(sizeof(AttributeSetNode) +
413 sizeof(Attribute) * SortedAttrs.size());
414 PA = new (Mem) AttributeSetNode(SortedAttrs);
415 pImpl->AttrsSetNodes.InsertNode(PA, InsertPoint);
418 // Return the AttributesListNode that we found or created.
422 bool AttributeSetNode::hasAttribute(Attribute::AttrKind Kind) const {
423 for (iterator I = begin(), E = end(); I != E; ++I)
424 if (I->hasAttribute(Kind))
429 bool AttributeSetNode::hasAttribute(StringRef Kind) const {
430 for (iterator I = begin(), E = end(); I != E; ++I)
431 if (I->hasAttribute(Kind))
436 Attribute AttributeSetNode::getAttribute(Attribute::AttrKind Kind) const {
437 for (iterator I = begin(), E = end(); I != E; ++I)
438 if (I->hasAttribute(Kind))
443 Attribute AttributeSetNode::getAttribute(StringRef Kind) const {
444 for (iterator I = begin(), E = end(); I != E; ++I)
445 if (I->hasAttribute(Kind))
450 unsigned AttributeSetNode::getAlignment() const {
451 for (iterator I = begin(), E = end(); I != E; ++I)
452 if (I->hasAttribute(Attribute::Alignment))
453 return I->getAlignment();
457 unsigned AttributeSetNode::getStackAlignment() const {
458 for (iterator I = begin(), E = end(); I != E; ++I)
459 if (I->hasAttribute(Attribute::StackAlignment))
460 return I->getStackAlignment();
464 std::string AttributeSetNode::getAsString(bool InAttrGrp) const {
466 for (iterator I = begin(), E = end(); I != E; ++I) {
469 Str += I->getAsString(InAttrGrp);
474 //===----------------------------------------------------------------------===//
475 // AttributeSetImpl Definition
476 //===----------------------------------------------------------------------===//
478 uint64_t AttributeSetImpl::Raw(unsigned Index) const {
479 for (unsigned I = 0, E = getNumAttributes(); I != E; ++I) {
480 if (getSlotIndex(I) != Index) continue;
481 const AttributeSetNode *ASN = getSlotNode(I);
484 for (AttributeSetNode::iterator II = ASN->begin(),
485 IE = ASN->end(); II != IE; ++II) {
486 Attribute Attr = *II;
488 // This cannot handle string attributes.
489 if (Attr.isStringAttribute()) continue;
491 Attribute::AttrKind Kind = Attr.getKindAsEnum();
493 if (Kind == Attribute::Alignment)
494 Mask |= (Log2_32(ASN->getAlignment()) + 1) << 16;
495 else if (Kind == Attribute::StackAlignment)
496 Mask |= (Log2_32(ASN->getStackAlignment()) + 1) << 26;
498 Mask |= AttributeImpl::getAttrMask(Kind);
507 //===----------------------------------------------------------------------===//
508 // AttributeSet Construction and Mutation Methods
509 //===----------------------------------------------------------------------===//
512 AttributeSet::getImpl(LLVMContext &C,
513 ArrayRef<std::pair<unsigned, AttributeSetNode*> > Attrs) {
514 LLVMContextImpl *pImpl = C.pImpl;
516 AttributeSetImpl::Profile(ID, Attrs);
519 AttributeSetImpl *PA = pImpl->AttrsLists.FindNodeOrInsertPos(ID, InsertPoint);
521 // If we didn't find any existing attributes of the same shape then
522 // create a new one and insert it.
524 // Coallocate entries after the AttributeSetImpl itself.
525 void *Mem = ::operator new(sizeof(AttributeSetImpl) +
526 sizeof(std::pair<unsigned, AttributeSetNode *>) *
528 PA = new (Mem) AttributeSetImpl(C, Attrs);
529 pImpl->AttrsLists.InsertNode(PA, InsertPoint);
532 // Return the AttributesList that we found or created.
533 return AttributeSet(PA);
536 AttributeSet AttributeSet::get(LLVMContext &C,
537 ArrayRef<std::pair<unsigned, Attribute> > Attrs){
538 // If there are no attributes then return a null AttributesList pointer.
540 return AttributeSet();
543 for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
544 assert((!i || Attrs[i-1].first <= Attrs[i].first) &&
545 "Misordered Attributes list!");
546 assert(!Attrs[i].second.hasAttribute(Attribute::None) &&
547 "Pointless attribute!");
551 // Create a vector if (unsigned, AttributeSetNode*) pairs from the attributes
553 SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrPairVec;
554 for (ArrayRef<std::pair<unsigned, Attribute> >::iterator I = Attrs.begin(),
555 E = Attrs.end(); I != E; ) {
556 unsigned Index = I->first;
557 SmallVector<Attribute, 4> AttrVec;
558 while (I != E && I->first == Index) {
559 AttrVec.push_back(I->second);
563 AttrPairVec.push_back(std::make_pair(Index,
564 AttributeSetNode::get(C, AttrVec)));
567 return getImpl(C, AttrPairVec);
570 AttributeSet AttributeSet::get(LLVMContext &C,
571 ArrayRef<std::pair<unsigned,
572 AttributeSetNode*> > Attrs) {
573 // If there are no attributes then return a null AttributesList pointer.
575 return AttributeSet();
577 return getImpl(C, Attrs);
580 AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index, AttrBuilder &B) {
581 if (!B.hasAttributes())
582 return AttributeSet();
584 // Add target-independent attributes.
585 SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
586 for (Attribute::AttrKind Kind = Attribute::None;
587 Kind != Attribute::EndAttrKinds; Kind = Attribute::AttrKind(Kind + 1)) {
588 if (!B.contains(Kind))
591 if (Kind == Attribute::Alignment)
592 Attrs.push_back(std::make_pair(Index, Attribute::
593 getWithAlignment(C, B.getAlignment())));
594 else if (Kind == Attribute::StackAlignment)
595 Attrs.push_back(std::make_pair(Index, Attribute::
596 getWithStackAlignment(C, B.getStackAlignment())));
598 Attrs.push_back(std::make_pair(Index, Attribute::get(C, Kind)));
601 // Add target-dependent (string) attributes.
602 for (AttrBuilder::td_iterator I = B.td_begin(), E = B.td_end();
604 Attrs.push_back(std::make_pair(Index, Attribute::get(C, I->first,I->second)));
606 return get(C, Attrs);
609 AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index,
610 ArrayRef<Attribute::AttrKind> Kind) {
611 SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
612 for (ArrayRef<Attribute::AttrKind>::iterator I = Kind.begin(),
613 E = Kind.end(); I != E; ++I)
614 Attrs.push_back(std::make_pair(Index, Attribute::get(C, *I)));
615 return get(C, Attrs);
618 AttributeSet AttributeSet::get(LLVMContext &C, ArrayRef<AttributeSet> Attrs) {
619 if (Attrs.empty()) return AttributeSet();
621 SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrNodeVec;
622 for (unsigned I = 0, E = Attrs.size(); I != E; ++I) {
623 AttributeSetImpl *AS = Attrs[I].pImpl;
625 AttrNodeVec.append(AS->getNode(0), AS->getNode(AS->getNumAttributes()));
628 return getImpl(C, AttrNodeVec);
631 AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
632 Attribute::AttrKind Attr) const {
633 if (hasAttribute(Index, Attr)) return *this;
634 return addAttributes(C, Index, AttributeSet::get(C, Index, Attr));
637 AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
638 StringRef Kind) const {
640 B.addAttribute(Kind);
641 return addAttributes(C, Index, AttributeSet::get(C, Index, B));
644 AttributeSet AttributeSet::addAttributes(LLVMContext &C, unsigned Index,
645 AttributeSet Attrs) const {
646 if (!pImpl) return Attrs;
647 if (!Attrs.pImpl) return *this;
650 // FIXME it is not obvious how this should work for alignment. For now, say
651 // we can't change a known alignment.
652 unsigned OldAlign = getParamAlignment(Index);
653 unsigned NewAlign = Attrs.getParamAlignment(Index);
654 assert((!OldAlign || !NewAlign || OldAlign == NewAlign) &&
655 "Attempt to change alignment!");
658 // Add the attribute slots before the one we're trying to add.
659 SmallVector<AttributeSet, 4> AttrSet;
660 uint64_t NumAttrs = pImpl->getNumAttributes();
662 uint64_t LastIndex = 0;
663 for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
664 if (getSlotIndex(I) >= Index) {
665 if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
669 AttrSet.push_back(getSlotAttributes(I));
672 // Now add the attribute into the correct slot. There may already be an
673 // AttributeSet there.
674 AttrBuilder B(AS, Index);
676 for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
677 if (Attrs.getSlotIndex(I) == Index) {
678 for (AttributeSetImpl::iterator II = Attrs.pImpl->begin(I),
679 IE = Attrs.pImpl->end(I); II != IE; ++II)
684 AttrSet.push_back(AttributeSet::get(C, Index, B));
686 // Add the remaining attribute slots.
687 for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
688 AttrSet.push_back(getSlotAttributes(I));
690 return get(C, AttrSet);
693 AttributeSet AttributeSet::removeAttribute(LLVMContext &C, unsigned Index,
694 Attribute::AttrKind Attr) const {
695 if (!hasAttribute(Index, Attr)) return *this;
696 return removeAttributes(C, Index, AttributeSet::get(C, Index, Attr));
699 AttributeSet AttributeSet::removeAttributes(LLVMContext &C, unsigned Index,
700 AttributeSet Attrs) const {
701 if (!pImpl) return AttributeSet();
702 if (!Attrs.pImpl) return *this;
705 // FIXME it is not obvious how this should work for alignment.
706 // For now, say we can't pass in alignment, which no current use does.
707 assert(!Attrs.hasAttribute(Index, Attribute::Alignment) &&
708 "Attempt to change alignment!");
711 // Add the attribute slots before the one we're trying to add.
712 SmallVector<AttributeSet, 4> AttrSet;
713 uint64_t NumAttrs = pImpl->getNumAttributes();
715 uint64_t LastIndex = 0;
716 for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
717 if (getSlotIndex(I) >= Index) {
718 if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
722 AttrSet.push_back(getSlotAttributes(I));
725 // Now remove the attribute from the correct slot. There may already be an
726 // AttributeSet there.
727 AttrBuilder B(AS, Index);
729 for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
730 if (Attrs.getSlotIndex(I) == Index) {
731 B.removeAttributes(Attrs.pImpl->getSlotAttributes(I), Index);
735 AttrSet.push_back(AttributeSet::get(C, Index, B));
737 // Add the remaining attribute slots.
738 for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
739 AttrSet.push_back(getSlotAttributes(I));
741 return get(C, AttrSet);
744 //===----------------------------------------------------------------------===//
745 // AttributeSet Accessor Methods
746 //===----------------------------------------------------------------------===//
748 LLVMContext &AttributeSet::getContext() const {
749 return pImpl->getContext();
752 AttributeSet AttributeSet::getParamAttributes(unsigned Index) const {
753 return pImpl && hasAttributes(Index) ?
754 AttributeSet::get(pImpl->getContext(),
755 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
756 std::make_pair(Index, getAttributes(Index)))) :
760 AttributeSet AttributeSet::getRetAttributes() const {
761 return pImpl && hasAttributes(ReturnIndex) ?
762 AttributeSet::get(pImpl->getContext(),
763 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
764 std::make_pair(ReturnIndex,
765 getAttributes(ReturnIndex)))) :
769 AttributeSet AttributeSet::getFnAttributes() const {
770 return pImpl && hasAttributes(FunctionIndex) ?
771 AttributeSet::get(pImpl->getContext(),
772 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
773 std::make_pair(FunctionIndex,
774 getAttributes(FunctionIndex)))) :
778 bool AttributeSet::hasAttribute(unsigned Index, Attribute::AttrKind Kind) const{
779 AttributeSetNode *ASN = getAttributes(Index);
780 return ASN ? ASN->hasAttribute(Kind) : false;
783 bool AttributeSet::hasAttribute(unsigned Index, StringRef Kind) const {
784 AttributeSetNode *ASN = getAttributes(Index);
785 return ASN ? ASN->hasAttribute(Kind) : false;
788 bool AttributeSet::hasAttributes(unsigned Index) const {
789 AttributeSetNode *ASN = getAttributes(Index);
790 return ASN ? ASN->hasAttributes() : false;
793 /// \brief Return true if the specified attribute is set for at least one
794 /// parameter or for the return value.
795 bool AttributeSet::hasAttrSomewhere(Attribute::AttrKind Attr) const {
796 if (pImpl == 0) return false;
798 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
799 for (AttributeSetImpl::iterator II = pImpl->begin(I),
800 IE = pImpl->end(I); II != IE; ++II)
801 if (II->hasAttribute(Attr))
807 Attribute AttributeSet::getAttribute(unsigned Index,
808 Attribute::AttrKind Kind) const {
809 AttributeSetNode *ASN = getAttributes(Index);
810 return ASN ? ASN->getAttribute(Kind) : Attribute();
813 Attribute AttributeSet::getAttribute(unsigned Index,
814 StringRef Kind) const {
815 AttributeSetNode *ASN = getAttributes(Index);
816 return ASN ? ASN->getAttribute(Kind) : Attribute();
819 unsigned AttributeSet::getParamAlignment(unsigned Index) const {
820 AttributeSetNode *ASN = getAttributes(Index);
821 return ASN ? ASN->getAlignment() : 0;
824 unsigned AttributeSet::getStackAlignment(unsigned Index) const {
825 AttributeSetNode *ASN = getAttributes(Index);
826 return ASN ? ASN->getStackAlignment() : 0;
829 std::string AttributeSet::getAsString(unsigned Index,
830 bool InAttrGrp) const {
831 AttributeSetNode *ASN = getAttributes(Index);
832 return ASN ? ASN->getAsString(InAttrGrp) : std::string("");
835 /// \brief The attributes for the specified index are returned.
836 AttributeSetNode *AttributeSet::getAttributes(unsigned Index) const {
837 if (!pImpl) return 0;
839 // Loop through to find the attribute node we want.
840 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
841 if (pImpl->getSlotIndex(I) == Index)
842 return pImpl->getSlotNode(I);
847 AttributeSet::iterator AttributeSet::begin(unsigned Slot) const {
849 return ArrayRef<Attribute>().begin();
850 return pImpl->begin(Slot);
853 AttributeSet::iterator AttributeSet::end(unsigned Slot) const {
855 return ArrayRef<Attribute>().end();
856 return pImpl->end(Slot);
859 //===----------------------------------------------------------------------===//
860 // AttributeSet Introspection Methods
861 //===----------------------------------------------------------------------===//
863 /// \brief Return the number of slots used in this attribute list. This is the
864 /// number of arguments that have an attribute set on them (including the
865 /// function itself).
866 unsigned AttributeSet::getNumSlots() const {
867 return pImpl ? pImpl->getNumAttributes() : 0;
870 unsigned AttributeSet::getSlotIndex(unsigned Slot) const {
871 assert(pImpl && Slot < pImpl->getNumAttributes() &&
872 "Slot # out of range!");
873 return pImpl->getSlotIndex(Slot);
876 AttributeSet AttributeSet::getSlotAttributes(unsigned Slot) const {
877 assert(pImpl && Slot < pImpl->getNumAttributes() &&
878 "Slot # out of range!");
879 return pImpl->getSlotAttributes(Slot);
882 uint64_t AttributeSet::Raw(unsigned Index) const {
883 // FIXME: Remove this.
884 return pImpl ? pImpl->Raw(Index) : 0;
887 void AttributeSet::dump() const {
890 for (unsigned i = 0, e = getNumSlots(); i < e; ++i) {
891 uint64_t Index = getSlotIndex(i);
897 dbgs() << " => " << getAsString(Index) << " }\n";
903 //===----------------------------------------------------------------------===//
904 // AttrBuilder Method Implementations
905 //===----------------------------------------------------------------------===//
907 AttrBuilder::AttrBuilder(AttributeSet AS, unsigned Index)
908 : Attrs(0), Alignment(0), StackAlignment(0) {
909 AttributeSetImpl *pImpl = AS.pImpl;
912 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
913 if (pImpl->getSlotIndex(I) != Index) continue;
915 for (AttributeSetImpl::iterator II = pImpl->begin(I),
916 IE = pImpl->end(I); II != IE; ++II)
923 void AttrBuilder::clear() {
925 Alignment = StackAlignment = 0;
928 AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
929 assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
930 assert(Val != Attribute::Alignment && Val != Attribute::StackAlignment &&
931 "Adding alignment attribute without adding alignment value!");
936 AttrBuilder &AttrBuilder::addAttribute(Attribute Attr) {
937 if (Attr.isStringAttribute()) {
938 addAttribute(Attr.getKindAsString(), Attr.getValueAsString());
942 Attribute::AttrKind Kind = Attr.getKindAsEnum();
945 if (Kind == Attribute::Alignment)
946 Alignment = Attr.getAlignment();
947 else if (Kind == Attribute::StackAlignment)
948 StackAlignment = Attr.getStackAlignment();
952 AttrBuilder &AttrBuilder::addAttribute(StringRef A, StringRef V) {
953 TargetDepAttrs[A] = V;
957 AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
958 assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
961 if (Val == Attribute::Alignment)
963 else if (Val == Attribute::StackAlignment)
969 AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
971 for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
972 if (A.getSlotIndex(I) == Index) {
977 assert(Slot != ~0U && "Couldn't find index in AttributeSet!");
979 for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot); I != E; ++I) {
981 if (Attr.isEnumAttribute() || Attr.isAlignAttribute()) {
982 Attribute::AttrKind Kind = I->getKindAsEnum();
985 if (Kind == Attribute::Alignment)
987 else if (Kind == Attribute::StackAlignment)
990 assert(Attr.isStringAttribute() && "Invalid attribute type!");
991 std::map<std::string, std::string>::iterator
992 Iter = TargetDepAttrs.find(Attr.getKindAsString());
993 if (Iter != TargetDepAttrs.end())
994 TargetDepAttrs.erase(Iter);
1001 AttrBuilder &AttrBuilder::removeAttribute(StringRef A) {
1002 std::map<std::string, std::string>::iterator I = TargetDepAttrs.find(A);
1003 if (I != TargetDepAttrs.end())
1004 TargetDepAttrs.erase(I);
1008 AttrBuilder &AttrBuilder::addAlignmentAttr(unsigned Align) {
1009 if (Align == 0) return *this;
1011 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
1012 assert(Align <= 0x40000000 && "Alignment too large.");
1014 Attrs[Attribute::Alignment] = true;
1019 AttrBuilder &AttrBuilder::addStackAlignmentAttr(unsigned Align) {
1020 // Default alignment, allow the target to define how to align it.
1021 if (Align == 0) return *this;
1023 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
1024 assert(Align <= 0x100 && "Alignment too large.");
1026 Attrs[Attribute::StackAlignment] = true;
1027 StackAlignment = Align;
1031 AttrBuilder &AttrBuilder::merge(const AttrBuilder &B) {
1032 // FIXME: What if both have alignments, but they don't match?!
1034 Alignment = B.Alignment;
1036 if (!StackAlignment)
1037 StackAlignment = B.StackAlignment;
1041 for (td_const_iterator I = B.TargetDepAttrs.begin(),
1042 E = B.TargetDepAttrs.end(); I != E; ++I)
1043 TargetDepAttrs[I->first] = I->second;
1048 bool AttrBuilder::contains(StringRef A) const {
1049 return TargetDepAttrs.find(A) != TargetDepAttrs.end();
1052 bool AttrBuilder::hasAttributes() const {
1053 return !Attrs.none() || !TargetDepAttrs.empty();
1056 bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
1057 unsigned Slot = ~0U;
1058 for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
1059 if (A.getSlotIndex(I) == Index) {
1064 assert(Slot != ~0U && "Couldn't find the index!");
1066 for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot);
1068 Attribute Attr = *I;
1069 if (Attr.isEnumAttribute() || Attr.isAlignAttribute()) {
1070 if (Attrs[I->getKindAsEnum()])
1073 assert(Attr.isStringAttribute() && "Invalid attribute kind!");
1074 return TargetDepAttrs.find(Attr.getKindAsString())!=TargetDepAttrs.end();
1081 bool AttrBuilder::hasAlignmentAttr() const {
1082 return Alignment != 0;
1085 bool AttrBuilder::operator==(const AttrBuilder &B) {
1086 if (Attrs != B.Attrs)
1089 for (td_const_iterator I = TargetDepAttrs.begin(),
1090 E = TargetDepAttrs.end(); I != E; ++I)
1091 if (B.TargetDepAttrs.find(I->first) == B.TargetDepAttrs.end())
1094 return Alignment == B.Alignment && StackAlignment == B.StackAlignment;
1097 AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
1098 // FIXME: Remove this in 4.0.
1099 if (!Val) return *this;
1101 for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
1102 I = Attribute::AttrKind(I + 1)) {
1103 if (uint64_t A = (Val & AttributeImpl::getAttrMask(I))) {
1106 if (I == Attribute::Alignment)
1107 Alignment = 1ULL << ((A >> 16) - 1);
1108 else if (I == Attribute::StackAlignment)
1109 StackAlignment = 1ULL << ((A >> 26)-1);
1116 //===----------------------------------------------------------------------===//
1117 // AttributeFuncs Function Defintions
1118 //===----------------------------------------------------------------------===//
1120 /// \brief Which attributes cannot be applied to a type.
1121 AttributeSet AttributeFuncs::typeIncompatible(Type *Ty, uint64_t Index) {
1122 AttrBuilder Incompatible;
1124 if (!Ty->isIntegerTy())
1125 // Attribute that only apply to integers.
1126 Incompatible.addAttribute(Attribute::SExt)
1127 .addAttribute(Attribute::ZExt);
1129 if (!Ty->isPointerTy())
1130 // Attribute that only apply to pointers.
1131 Incompatible.addAttribute(Attribute::ByVal)
1132 .addAttribute(Attribute::Nest)
1133 .addAttribute(Attribute::NoAlias)
1134 .addAttribute(Attribute::NoCapture)
1135 .addAttribute(Attribute::ReadNone)
1136 .addAttribute(Attribute::ReadOnly)
1137 .addAttribute(Attribute::StructRet);
1139 return AttributeSet::get(Ty->getContext(), Index, Incompatible);