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 "llvm/IR/Function.h"
18 #include "AttributeImpl.h"
19 #include "LLVMContextImpl.h"
20 #include "llvm/ADT/STLExtras.h"
21 #include "llvm/ADT/StringExtras.h"
22 #include "llvm/IR/Type.h"
23 #include "llvm/Support/Atomic.h"
24 #include "llvm/Support/Debug.h"
25 #include "llvm/Support/ManagedStatic.h"
26 #include "llvm/Support/Mutex.h"
27 #include "llvm/Support/raw_ostream.h"
31 //===----------------------------------------------------------------------===//
32 // Attribute Construction Methods
33 //===----------------------------------------------------------------------===//
35 Attribute Attribute::get(LLVMContext &Context, Attribute::AttrKind Kind,
37 LLVMContextImpl *pImpl = Context.pImpl;
40 if (Val) ID.AddInteger(Val);
43 AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
46 // If we didn't find any existing attributes of the same shape then create a
47 // new one and insert it.
49 PA = new EnumAttributeImpl(Kind);
51 PA = new IntAttributeImpl(Kind, Val);
52 pImpl->AttrsSet.InsertNode(PA, InsertPoint);
55 // Return the Attribute that we found or created.
59 Attribute Attribute::get(LLVMContext &Context, StringRef Kind, StringRef Val) {
60 LLVMContextImpl *pImpl = Context.pImpl;
63 if (!Val.empty()) ID.AddString(Val);
66 AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
69 // If we didn't find any existing attributes of the same shape then create a
70 // new one and insert it.
71 PA = new StringAttributeImpl(Kind, Val);
72 pImpl->AttrsSet.InsertNode(PA, InsertPoint);
75 // Return the Attribute that we found or created.
79 Attribute Attribute::getWithAlignment(LLVMContext &Context, uint64_t Align) {
80 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
81 assert(Align <= 0x40000000 && "Alignment too large.");
82 return get(Context, Alignment, Align);
85 Attribute Attribute::getWithStackAlignment(LLVMContext &Context,
87 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
88 assert(Align <= 0x100 && "Alignment too large.");
89 return get(Context, StackAlignment, Align);
92 Attribute Attribute::getWithDereferenceableBytes(LLVMContext &Context,
94 assert(Bytes && "Bytes must be non-zero.");
95 return get(Context, Dereferenceable, Bytes);
98 Attribute Attribute::getWithDereferenceableOrNullBytes(LLVMContext &Context,
100 assert(Bytes && "Bytes must be non-zero.");
101 return get(Context, DereferenceableOrNull, Bytes);
104 //===----------------------------------------------------------------------===//
105 // Attribute Accessor Methods
106 //===----------------------------------------------------------------------===//
108 bool Attribute::isEnumAttribute() const {
109 return pImpl && pImpl->isEnumAttribute();
112 bool Attribute::isIntAttribute() const {
113 return pImpl && pImpl->isIntAttribute();
116 bool Attribute::isStringAttribute() const {
117 return pImpl && pImpl->isStringAttribute();
120 Attribute::AttrKind Attribute::getKindAsEnum() const {
121 if (!pImpl) return None;
122 assert((isEnumAttribute() || isIntAttribute()) &&
123 "Invalid attribute type to get the kind as an enum!");
124 return pImpl->getKindAsEnum();
127 uint64_t Attribute::getValueAsInt() const {
128 if (!pImpl) return 0;
129 assert(isIntAttribute() &&
130 "Expected the attribute to be an integer attribute!");
131 return pImpl->getValueAsInt();
134 StringRef Attribute::getKindAsString() const {
135 if (!pImpl) return StringRef();
136 assert(isStringAttribute() &&
137 "Invalid attribute type to get the kind as a string!");
138 return pImpl->getKindAsString();
141 StringRef Attribute::getValueAsString() const {
142 if (!pImpl) return StringRef();
143 assert(isStringAttribute() &&
144 "Invalid attribute type to get the value as a string!");
145 return pImpl->getValueAsString();
148 bool Attribute::hasAttribute(AttrKind Kind) const {
149 return (pImpl && pImpl->hasAttribute(Kind)) || (!pImpl && Kind == None);
152 bool Attribute::hasAttribute(StringRef Kind) const {
153 if (!isStringAttribute()) return false;
154 return pImpl && pImpl->hasAttribute(Kind);
157 /// This returns the alignment field of an attribute as a byte alignment value.
158 unsigned Attribute::getAlignment() const {
159 assert(hasAttribute(Attribute::Alignment) &&
160 "Trying to get alignment from non-alignment attribute!");
161 return pImpl->getValueAsInt();
164 /// This returns the stack alignment field of an attribute as a byte alignment
166 unsigned Attribute::getStackAlignment() const {
167 assert(hasAttribute(Attribute::StackAlignment) &&
168 "Trying to get alignment from non-alignment attribute!");
169 return pImpl->getValueAsInt();
172 /// This returns the number of dereferenceable bytes.
173 uint64_t Attribute::getDereferenceableBytes() const {
174 assert(hasAttribute(Attribute::Dereferenceable) &&
175 "Trying to get dereferenceable bytes from "
176 "non-dereferenceable attribute!");
177 return pImpl->getValueAsInt();
180 uint64_t Attribute::getDereferenceableOrNullBytes() const {
181 assert(hasAttribute(Attribute::DereferenceableOrNull) &&
182 "Trying to get dereferenceable bytes from "
183 "non-dereferenceable attribute!");
184 return pImpl->getValueAsInt();
187 std::string Attribute::getAsString(bool InAttrGrp) const {
188 if (!pImpl) return "";
190 if (hasAttribute(Attribute::SanitizeAddress))
191 return "sanitize_address";
192 if (hasAttribute(Attribute::AlwaysInline))
193 return "alwaysinline";
194 if (hasAttribute(Attribute::ArgMemOnly))
196 if (hasAttribute(Attribute::Builtin))
198 if (hasAttribute(Attribute::ByVal))
200 if (hasAttribute(Attribute::Convergent))
202 if (hasAttribute(Attribute::InaccessibleMemOnly))
203 return "inaccessiblememonly";
204 if (hasAttribute(Attribute::InaccessibleMemOrArgMemOnly))
205 return "inaccessiblemem_or_argmemonly";
206 if (hasAttribute(Attribute::InAlloca))
208 if (hasAttribute(Attribute::InlineHint))
210 if (hasAttribute(Attribute::InReg))
212 if (hasAttribute(Attribute::JumpTable))
214 if (hasAttribute(Attribute::MinSize))
216 if (hasAttribute(Attribute::Naked))
218 if (hasAttribute(Attribute::Nest))
220 if (hasAttribute(Attribute::NoAlias))
222 if (hasAttribute(Attribute::NoBuiltin))
224 if (hasAttribute(Attribute::NoCapture))
226 if (hasAttribute(Attribute::NoDuplicate))
227 return "noduplicate";
228 if (hasAttribute(Attribute::NoImplicitFloat))
229 return "noimplicitfloat";
230 if (hasAttribute(Attribute::NoInline))
232 if (hasAttribute(Attribute::NonLazyBind))
233 return "nonlazybind";
234 if (hasAttribute(Attribute::NonNull))
236 if (hasAttribute(Attribute::NoRedZone))
238 if (hasAttribute(Attribute::NoReturn))
240 if (hasAttribute(Attribute::NoRecurse))
242 if (hasAttribute(Attribute::NoUnwind))
244 if (hasAttribute(Attribute::OptimizeNone))
246 if (hasAttribute(Attribute::OptimizeForSize))
248 if (hasAttribute(Attribute::ReadNone))
250 if (hasAttribute(Attribute::ReadOnly))
252 if (hasAttribute(Attribute::Returned))
254 if (hasAttribute(Attribute::ReturnsTwice))
255 return "returns_twice";
256 if (hasAttribute(Attribute::SExt))
258 if (hasAttribute(Attribute::StackProtect))
260 if (hasAttribute(Attribute::StackProtectReq))
262 if (hasAttribute(Attribute::StackProtectStrong))
264 if (hasAttribute(Attribute::SafeStack))
266 if (hasAttribute(Attribute::StructRet))
268 if (hasAttribute(Attribute::SanitizeThread))
269 return "sanitize_thread";
270 if (hasAttribute(Attribute::SanitizeMemory))
271 return "sanitize_memory";
272 if (hasAttribute(Attribute::UWTable))
274 if (hasAttribute(Attribute::ZExt))
276 if (hasAttribute(Attribute::Cold))
279 // FIXME: These should be output like this:
284 if (hasAttribute(Attribute::Alignment)) {
287 Result += (InAttrGrp) ? "=" : " ";
288 Result += utostr(getValueAsInt());
292 auto AttrWithBytesToString = [&](const char *Name) {
297 Result += utostr(getValueAsInt());
300 Result += utostr(getValueAsInt());
306 if (hasAttribute(Attribute::StackAlignment))
307 return AttrWithBytesToString("alignstack");
309 if (hasAttribute(Attribute::Dereferenceable))
310 return AttrWithBytesToString("dereferenceable");
312 if (hasAttribute(Attribute::DereferenceableOrNull))
313 return AttrWithBytesToString("dereferenceable_or_null");
315 // Convert target-dependent attributes to strings of the form:
320 if (isStringAttribute()) {
322 Result += (Twine('"') + getKindAsString() + Twine('"')).str();
324 StringRef Val = pImpl->getValueAsString();
325 if (Val.empty()) return Result;
327 Result += ("=\"" + Val + Twine('"')).str();
331 llvm_unreachable("Unknown attribute");
334 bool Attribute::operator<(Attribute A) const {
335 if (!pImpl && !A.pImpl) return false;
336 if (!pImpl) return true;
337 if (!A.pImpl) return false;
338 return *pImpl < *A.pImpl;
341 //===----------------------------------------------------------------------===//
342 // AttributeImpl Definition
343 //===----------------------------------------------------------------------===//
345 // Pin the vtables to this file.
346 AttributeImpl::~AttributeImpl() {}
347 void EnumAttributeImpl::anchor() {}
348 void IntAttributeImpl::anchor() {}
349 void StringAttributeImpl::anchor() {}
351 bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
352 if (isStringAttribute()) return false;
353 return getKindAsEnum() == A;
356 bool AttributeImpl::hasAttribute(StringRef Kind) const {
357 if (!isStringAttribute()) return false;
358 return getKindAsString() == Kind;
361 Attribute::AttrKind AttributeImpl::getKindAsEnum() const {
362 assert(isEnumAttribute() || isIntAttribute());
363 return static_cast<const EnumAttributeImpl *>(this)->getEnumKind();
366 uint64_t AttributeImpl::getValueAsInt() const {
367 assert(isIntAttribute());
368 return static_cast<const IntAttributeImpl *>(this)->getValue();
371 StringRef AttributeImpl::getKindAsString() const {
372 assert(isStringAttribute());
373 return static_cast<const StringAttributeImpl *>(this)->getStringKind();
376 StringRef AttributeImpl::getValueAsString() const {
377 assert(isStringAttribute());
378 return static_cast<const StringAttributeImpl *>(this)->getStringValue();
381 bool AttributeImpl::operator<(const AttributeImpl &AI) const {
382 // This sorts the attributes with Attribute::AttrKinds coming first (sorted
383 // relative to their enum value) and then strings.
384 if (isEnumAttribute()) {
385 if (AI.isEnumAttribute()) return getKindAsEnum() < AI.getKindAsEnum();
386 if (AI.isIntAttribute()) return true;
387 if (AI.isStringAttribute()) return true;
390 if (isIntAttribute()) {
391 if (AI.isEnumAttribute()) return false;
392 if (AI.isIntAttribute()) return getValueAsInt() < AI.getValueAsInt();
393 if (AI.isStringAttribute()) return true;
396 if (AI.isEnumAttribute()) return false;
397 if (AI.isIntAttribute()) return false;
398 if (getKindAsString() == AI.getKindAsString())
399 return getValueAsString() < AI.getValueAsString();
400 return getKindAsString() < AI.getKindAsString();
403 uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
404 // FIXME: Remove this.
406 case Attribute::EndAttrKinds:
407 llvm_unreachable("Synthetic enumerators which should never get here");
409 case Attribute::None: return 0;
410 case Attribute::ZExt: return 1 << 0;
411 case Attribute::SExt: return 1 << 1;
412 case Attribute::NoReturn: return 1 << 2;
413 case Attribute::InReg: return 1 << 3;
414 case Attribute::StructRet: return 1 << 4;
415 case Attribute::NoUnwind: return 1 << 5;
416 case Attribute::NoAlias: return 1 << 6;
417 case Attribute::ByVal: return 1 << 7;
418 case Attribute::Nest: return 1 << 8;
419 case Attribute::ReadNone: return 1 << 9;
420 case Attribute::ReadOnly: return 1 << 10;
421 case Attribute::NoInline: return 1 << 11;
422 case Attribute::AlwaysInline: return 1 << 12;
423 case Attribute::OptimizeForSize: return 1 << 13;
424 case Attribute::StackProtect: return 1 << 14;
425 case Attribute::StackProtectReq: return 1 << 15;
426 case Attribute::Alignment: return 31 << 16;
427 case Attribute::NoCapture: return 1 << 21;
428 case Attribute::NoRedZone: return 1 << 22;
429 case Attribute::NoImplicitFloat: return 1 << 23;
430 case Attribute::Naked: return 1 << 24;
431 case Attribute::InlineHint: return 1 << 25;
432 case Attribute::StackAlignment: return 7 << 26;
433 case Attribute::ReturnsTwice: return 1 << 29;
434 case Attribute::UWTable: return 1 << 30;
435 case Attribute::NonLazyBind: return 1U << 31;
436 case Attribute::SanitizeAddress: return 1ULL << 32;
437 case Attribute::MinSize: return 1ULL << 33;
438 case Attribute::NoDuplicate: return 1ULL << 34;
439 case Attribute::StackProtectStrong: return 1ULL << 35;
440 case Attribute::SanitizeThread: return 1ULL << 36;
441 case Attribute::SanitizeMemory: return 1ULL << 37;
442 case Attribute::NoBuiltin: return 1ULL << 38;
443 case Attribute::Returned: return 1ULL << 39;
444 case Attribute::Cold: return 1ULL << 40;
445 case Attribute::Builtin: return 1ULL << 41;
446 case Attribute::OptimizeNone: return 1ULL << 42;
447 case Attribute::InAlloca: return 1ULL << 43;
448 case Attribute::NonNull: return 1ULL << 44;
449 case Attribute::JumpTable: return 1ULL << 45;
450 case Attribute::Convergent: return 1ULL << 46;
451 case Attribute::SafeStack: return 1ULL << 47;
452 case Attribute::NoRecurse: return 1ULL << 48;
453 case Attribute::InaccessibleMemOnly: return 1ULL << 49;
454 case Attribute::InaccessibleMemOrArgMemOnly: return 1ULL << 50;
455 case Attribute::Dereferenceable:
456 llvm_unreachable("dereferenceable attribute not supported in raw format");
458 case Attribute::DereferenceableOrNull:
459 llvm_unreachable("dereferenceable_or_null attribute not supported in raw "
462 case Attribute::ArgMemOnly:
463 llvm_unreachable("argmemonly attribute not supported in raw format");
466 llvm_unreachable("Unsupported attribute type");
469 //===----------------------------------------------------------------------===//
470 // AttributeSetNode Definition
471 //===----------------------------------------------------------------------===//
473 AttributeSetNode *AttributeSetNode::get(LLVMContext &C,
474 ArrayRef<Attribute> Attrs) {
478 // Otherwise, build a key to look up the existing attributes.
479 LLVMContextImpl *pImpl = C.pImpl;
482 SmallVector<Attribute, 8> SortedAttrs(Attrs.begin(), Attrs.end());
483 array_pod_sort(SortedAttrs.begin(), SortedAttrs.end());
485 for (Attribute Attr : SortedAttrs)
489 AttributeSetNode *PA =
490 pImpl->AttrsSetNodes.FindNodeOrInsertPos(ID, InsertPoint);
492 // If we didn't find any existing attributes of the same shape then create a
493 // new one and insert it.
495 // Coallocate entries after the AttributeSetNode itself.
496 void *Mem = ::operator new(totalSizeToAlloc<Attribute>(SortedAttrs.size()));
497 PA = new (Mem) AttributeSetNode(SortedAttrs);
498 pImpl->AttrsSetNodes.InsertNode(PA, InsertPoint);
501 // Return the AttributesListNode that we found or created.
505 bool AttributeSetNode::hasAttribute(Attribute::AttrKind Kind) const {
506 for (iterator I = begin(), E = end(); I != E; ++I)
507 if (I->hasAttribute(Kind))
512 bool AttributeSetNode::hasAttribute(StringRef Kind) const {
513 for (iterator I = begin(), E = end(); I != E; ++I)
514 if (I->hasAttribute(Kind))
519 Attribute AttributeSetNode::getAttribute(Attribute::AttrKind Kind) const {
520 for (iterator I = begin(), E = end(); I != E; ++I)
521 if (I->hasAttribute(Kind))
526 Attribute AttributeSetNode::getAttribute(StringRef Kind) const {
527 for (iterator I = begin(), E = end(); I != E; ++I)
528 if (I->hasAttribute(Kind))
533 unsigned AttributeSetNode::getAlignment() const {
534 for (iterator I = begin(), E = end(); I != E; ++I)
535 if (I->hasAttribute(Attribute::Alignment))
536 return I->getAlignment();
540 unsigned AttributeSetNode::getStackAlignment() const {
541 for (iterator I = begin(), E = end(); I != E; ++I)
542 if (I->hasAttribute(Attribute::StackAlignment))
543 return I->getStackAlignment();
547 uint64_t AttributeSetNode::getDereferenceableBytes() const {
548 for (iterator I = begin(), E = end(); I != E; ++I)
549 if (I->hasAttribute(Attribute::Dereferenceable))
550 return I->getDereferenceableBytes();
554 uint64_t AttributeSetNode::getDereferenceableOrNullBytes() const {
555 for (iterator I = begin(), E = end(); I != E; ++I)
556 if (I->hasAttribute(Attribute::DereferenceableOrNull))
557 return I->getDereferenceableOrNullBytes();
561 std::string AttributeSetNode::getAsString(bool InAttrGrp) const {
563 for (iterator I = begin(), E = end(); I != E; ++I) {
566 Str += I->getAsString(InAttrGrp);
571 //===----------------------------------------------------------------------===//
572 // AttributeSetImpl Definition
573 //===----------------------------------------------------------------------===//
575 uint64_t AttributeSetImpl::Raw(unsigned Index) const {
576 for (unsigned I = 0, E = getNumAttributes(); I != E; ++I) {
577 if (getSlotIndex(I) != Index) continue;
578 const AttributeSetNode *ASN = getSlotNode(I);
581 for (AttributeSetNode::iterator II = ASN->begin(),
582 IE = ASN->end(); II != IE; ++II) {
583 Attribute Attr = *II;
585 // This cannot handle string attributes.
586 if (Attr.isStringAttribute()) continue;
588 Attribute::AttrKind Kind = Attr.getKindAsEnum();
590 if (Kind == Attribute::Alignment)
591 Mask |= (Log2_32(ASN->getAlignment()) + 1) << 16;
592 else if (Kind == Attribute::StackAlignment)
593 Mask |= (Log2_32(ASN->getStackAlignment()) + 1) << 26;
594 else if (Kind == Attribute::Dereferenceable)
595 llvm_unreachable("dereferenceable not supported in bit mask");
597 Mask |= AttributeImpl::getAttrMask(Kind);
606 void AttributeSetImpl::dump() const {
607 AttributeSet(const_cast<AttributeSetImpl *>(this)).dump();
610 //===----------------------------------------------------------------------===//
611 // AttributeSet Construction and Mutation Methods
612 //===----------------------------------------------------------------------===//
615 AttributeSet::getImpl(LLVMContext &C,
616 ArrayRef<std::pair<unsigned, AttributeSetNode*> > Attrs) {
617 LLVMContextImpl *pImpl = C.pImpl;
619 AttributeSetImpl::Profile(ID, Attrs);
622 AttributeSetImpl *PA = pImpl->AttrsLists.FindNodeOrInsertPos(ID, InsertPoint);
624 // If we didn't find any existing attributes of the same shape then
625 // create a new one and insert it.
627 // Coallocate entries after the AttributeSetImpl itself.
628 void *Mem = ::operator new(
629 AttributeSetImpl::totalSizeToAlloc<IndexAttrPair>(Attrs.size()));
630 PA = new (Mem) AttributeSetImpl(C, Attrs);
631 pImpl->AttrsLists.InsertNode(PA, InsertPoint);
634 // Return the AttributesList that we found or created.
635 return AttributeSet(PA);
638 AttributeSet AttributeSet::get(LLVMContext &C,
639 ArrayRef<std::pair<unsigned, Attribute> > Attrs){
640 // If there are no attributes then return a null AttributesList pointer.
642 return AttributeSet();
644 assert(std::is_sorted(Attrs.begin(), Attrs.end(),
645 [](const std::pair<unsigned, Attribute> &LHS,
646 const std::pair<unsigned, Attribute> &RHS) {
647 return LHS.first < RHS.first;
648 }) && "Misordered Attributes list!");
649 assert(std::none_of(Attrs.begin(), Attrs.end(),
650 [](const std::pair<unsigned, Attribute> &Pair) {
651 return Pair.second.hasAttribute(Attribute::None);
652 }) && "Pointless attribute!");
654 // Create a vector if (unsigned, AttributeSetNode*) pairs from the attributes
656 SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrPairVec;
657 for (ArrayRef<std::pair<unsigned, Attribute> >::iterator I = Attrs.begin(),
658 E = Attrs.end(); I != E; ) {
659 unsigned Index = I->first;
660 SmallVector<Attribute, 4> AttrVec;
661 while (I != E && I->first == Index) {
662 AttrVec.push_back(I->second);
666 AttrPairVec.push_back(std::make_pair(Index,
667 AttributeSetNode::get(C, AttrVec)));
670 return getImpl(C, AttrPairVec);
673 AttributeSet AttributeSet::get(LLVMContext &C,
674 ArrayRef<std::pair<unsigned,
675 AttributeSetNode*> > Attrs) {
676 // If there are no attributes then return a null AttributesList pointer.
678 return AttributeSet();
680 return getImpl(C, Attrs);
683 AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index,
684 const AttrBuilder &B) {
685 if (!B.hasAttributes())
686 return AttributeSet();
688 // Add target-independent attributes.
689 SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
690 for (Attribute::AttrKind Kind = Attribute::None;
691 Kind != Attribute::EndAttrKinds; Kind = Attribute::AttrKind(Kind + 1)) {
692 if (!B.contains(Kind))
697 case Attribute::Alignment:
698 Attr = Attribute::getWithAlignment(C, B.getAlignment());
700 case Attribute::StackAlignment:
701 Attr = Attribute::getWithStackAlignment(C, B.getStackAlignment());
703 case Attribute::Dereferenceable:
704 Attr = Attribute::getWithDereferenceableBytes(
705 C, B.getDereferenceableBytes());
707 case Attribute::DereferenceableOrNull:
708 Attr = Attribute::getWithDereferenceableOrNullBytes(
709 C, B.getDereferenceableOrNullBytes());
712 Attr = Attribute::get(C, Kind);
714 Attrs.push_back(std::make_pair(Index, Attr));
717 // Add target-dependent (string) attributes.
718 for (const AttrBuilder::td_type &TDA : B.td_attrs())
720 std::make_pair(Index, Attribute::get(C, TDA.first, TDA.second)));
722 return get(C, Attrs);
725 AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index,
726 ArrayRef<Attribute::AttrKind> Kind) {
727 SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
728 for (Attribute::AttrKind K : Kind)
729 Attrs.push_back(std::make_pair(Index, Attribute::get(C, K)));
730 return get(C, Attrs);
733 AttributeSet AttributeSet::get(LLVMContext &C, ArrayRef<AttributeSet> Attrs) {
734 if (Attrs.empty()) return AttributeSet();
735 if (Attrs.size() == 1) return Attrs[0];
737 SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrNodeVec;
738 AttributeSetImpl *A0 = Attrs[0].pImpl;
740 AttrNodeVec.append(A0->getNode(0), A0->getNode(A0->getNumAttributes()));
741 // Copy all attributes from Attrs into AttrNodeVec while keeping AttrNodeVec
742 // ordered by index. Because we know that each list in Attrs is ordered by
743 // index we only need to merge each successive list in rather than doing a
745 for (unsigned I = 1, E = Attrs.size(); I != E; ++I) {
746 AttributeSetImpl *AS = Attrs[I].pImpl;
748 SmallVector<std::pair<unsigned, AttributeSetNode *>, 8>::iterator
749 ANVI = AttrNodeVec.begin(), ANVE;
750 for (const IndexAttrPair *AI = AS->getNode(0),
751 *AE = AS->getNode(AS->getNumAttributes());
753 ANVE = AttrNodeVec.end();
754 while (ANVI != ANVE && ANVI->first <= AI->first)
756 ANVI = AttrNodeVec.insert(ANVI, *AI) + 1;
760 return getImpl(C, AttrNodeVec);
763 AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
764 Attribute::AttrKind Attr) const {
765 if (hasAttribute(Index, Attr)) return *this;
766 return addAttributes(C, Index, AttributeSet::get(C, Index, Attr));
769 AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
770 StringRef Kind) const {
772 B.addAttribute(Kind);
773 return addAttributes(C, Index, AttributeSet::get(C, Index, B));
776 AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
777 StringRef Kind, StringRef Value) const {
779 B.addAttribute(Kind, Value);
780 return addAttributes(C, Index, AttributeSet::get(C, Index, B));
783 AttributeSet AttributeSet::addAttribute(LLVMContext &C,
784 ArrayRef<unsigned> Indices,
786 unsigned I = 0, E = pImpl ? pImpl->getNumAttributes() : 0;
787 auto IdxI = Indices.begin(), IdxE = Indices.end();
788 SmallVector<AttributeSet, 4> AttrSet;
790 while (I != E && IdxI != IdxE) {
791 if (getSlotIndex(I) < *IdxI)
792 AttrSet.emplace_back(getSlotAttributes(I++));
793 else if (getSlotIndex(I) > *IdxI)
794 AttrSet.emplace_back(AttributeSet::get(C, std::make_pair(*IdxI++, A)));
796 AttrBuilder B(getSlotAttributes(I), *IdxI);
798 AttrSet.emplace_back(AttributeSet::get(C, *IdxI, B));
805 AttrSet.emplace_back(getSlotAttributes(I++));
808 AttrSet.emplace_back(AttributeSet::get(C, std::make_pair(*IdxI++, A)));
810 return get(C, AttrSet);
813 AttributeSet AttributeSet::addAttributes(LLVMContext &C, unsigned Index,
814 AttributeSet Attrs) const {
815 if (!pImpl) return Attrs;
816 if (!Attrs.pImpl) return *this;
819 // FIXME it is not obvious how this should work for alignment. For now, say
820 // we can't change a known alignment.
821 unsigned OldAlign = getParamAlignment(Index);
822 unsigned NewAlign = Attrs.getParamAlignment(Index);
823 assert((!OldAlign || !NewAlign || OldAlign == NewAlign) &&
824 "Attempt to change alignment!");
827 // Add the attribute slots before the one we're trying to add.
828 SmallVector<AttributeSet, 4> AttrSet;
829 uint64_t NumAttrs = pImpl->getNumAttributes();
831 uint64_t LastIndex = 0;
832 for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
833 if (getSlotIndex(I) >= Index) {
834 if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
838 AttrSet.push_back(getSlotAttributes(I));
841 // Now add the attribute into the correct slot. There may already be an
842 // AttributeSet there.
843 AttrBuilder B(AS, Index);
845 for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
846 if (Attrs.getSlotIndex(I) == Index) {
847 for (AttributeSetImpl::iterator II = Attrs.pImpl->begin(I),
848 IE = Attrs.pImpl->end(I); II != IE; ++II)
853 AttrSet.push_back(AttributeSet::get(C, Index, B));
855 // Add the remaining attribute slots.
856 for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
857 AttrSet.push_back(getSlotAttributes(I));
859 return get(C, AttrSet);
862 AttributeSet AttributeSet::removeAttribute(LLVMContext &C, unsigned Index,
863 Attribute::AttrKind Attr) const {
864 if (!hasAttribute(Index, Attr)) return *this;
865 return removeAttributes(C, Index, AttributeSet::get(C, Index, Attr));
868 AttributeSet AttributeSet::removeAttributes(LLVMContext &C, unsigned Index,
869 AttributeSet Attrs) const {
870 if (!pImpl) return AttributeSet();
871 if (!Attrs.pImpl) return *this;
873 // FIXME it is not obvious how this should work for alignment.
874 // For now, say we can't pass in alignment, which no current use does.
875 assert(!Attrs.hasAttribute(Index, Attribute::Alignment) &&
876 "Attempt to change alignment!");
878 // Add the attribute slots before the one we're trying to add.
879 SmallVector<AttributeSet, 4> AttrSet;
880 uint64_t NumAttrs = pImpl->getNumAttributes();
882 uint64_t LastIndex = 0;
883 for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
884 if (getSlotIndex(I) >= Index) {
885 if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
889 AttrSet.push_back(getSlotAttributes(I));
892 // Now remove the attribute from the correct slot. There may already be an
893 // AttributeSet there.
894 AttrBuilder B(AS, Index);
896 for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
897 if (Attrs.getSlotIndex(I) == Index) {
898 B.removeAttributes(Attrs.pImpl->getSlotAttributes(I), Index);
902 AttrSet.push_back(AttributeSet::get(C, Index, B));
904 // Add the remaining attribute slots.
905 for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
906 AttrSet.push_back(getSlotAttributes(I));
908 return get(C, AttrSet);
911 AttributeSet AttributeSet::removeAttributes(LLVMContext &C, unsigned Index,
912 const AttrBuilder &Attrs) const {
913 if (!pImpl) return AttributeSet();
915 // FIXME it is not obvious how this should work for alignment.
916 // For now, say we can't pass in alignment, which no current use does.
917 assert(!Attrs.hasAlignmentAttr() && "Attempt to change alignment!");
919 // Add the attribute slots before the one we're trying to add.
920 SmallVector<AttributeSet, 4> AttrSet;
921 uint64_t NumAttrs = pImpl->getNumAttributes();
923 uint64_t LastIndex = 0;
924 for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
925 if (getSlotIndex(I) >= Index) {
926 if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
930 AttrSet.push_back(getSlotAttributes(I));
933 // Now remove the attribute from the correct slot. There may already be an
934 // AttributeSet there.
935 AttrBuilder B(AS, Index);
938 AttrSet.push_back(AttributeSet::get(C, Index, B));
940 // Add the remaining attribute slots.
941 for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
942 AttrSet.push_back(getSlotAttributes(I));
944 return get(C, AttrSet);
947 AttributeSet AttributeSet::addDereferenceableAttr(LLVMContext &C, unsigned Index,
948 uint64_t Bytes) const {
950 B.addDereferenceableAttr(Bytes);
951 return addAttributes(C, Index, AttributeSet::get(C, Index, B));
954 AttributeSet AttributeSet::addDereferenceableOrNullAttr(LLVMContext &C,
956 uint64_t Bytes) const {
958 B.addDereferenceableOrNullAttr(Bytes);
959 return addAttributes(C, Index, AttributeSet::get(C, Index, B));
962 //===----------------------------------------------------------------------===//
963 // AttributeSet Accessor Methods
964 //===----------------------------------------------------------------------===//
966 LLVMContext &AttributeSet::getContext() const {
967 return pImpl->getContext();
970 AttributeSet AttributeSet::getParamAttributes(unsigned Index) const {
971 return pImpl && hasAttributes(Index) ?
972 AttributeSet::get(pImpl->getContext(),
973 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
974 std::make_pair(Index, getAttributes(Index)))) :
978 AttributeSet AttributeSet::getRetAttributes() const {
979 return pImpl && hasAttributes(ReturnIndex) ?
980 AttributeSet::get(pImpl->getContext(),
981 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
982 std::make_pair(ReturnIndex,
983 getAttributes(ReturnIndex)))) :
987 AttributeSet AttributeSet::getFnAttributes() const {
988 return pImpl && hasAttributes(FunctionIndex) ?
989 AttributeSet::get(pImpl->getContext(),
990 ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
991 std::make_pair(FunctionIndex,
992 getAttributes(FunctionIndex)))) :
996 bool AttributeSet::hasAttribute(unsigned Index, Attribute::AttrKind Kind) const{
997 AttributeSetNode *ASN = getAttributes(Index);
998 return ASN && ASN->hasAttribute(Kind);
1001 bool AttributeSet::hasAttribute(unsigned Index, StringRef Kind) const {
1002 AttributeSetNode *ASN = getAttributes(Index);
1003 return ASN && ASN->hasAttribute(Kind);
1006 bool AttributeSet::hasAttributes(unsigned Index) const {
1007 AttributeSetNode *ASN = getAttributes(Index);
1008 return ASN && ASN->hasAttributes();
1011 /// \brief Return true if the specified attribute is set for at least one
1012 /// parameter or for the return value.
1013 bool AttributeSet::hasAttrSomewhere(Attribute::AttrKind Attr) const {
1014 if (!pImpl) return false;
1016 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
1017 for (AttributeSetImpl::iterator II = pImpl->begin(I),
1018 IE = pImpl->end(I); II != IE; ++II)
1019 if (II->hasAttribute(Attr))
1025 Attribute AttributeSet::getAttribute(unsigned Index,
1026 Attribute::AttrKind Kind) const {
1027 AttributeSetNode *ASN = getAttributes(Index);
1028 return ASN ? ASN->getAttribute(Kind) : Attribute();
1031 Attribute AttributeSet::getAttribute(unsigned Index,
1032 StringRef Kind) const {
1033 AttributeSetNode *ASN = getAttributes(Index);
1034 return ASN ? ASN->getAttribute(Kind) : Attribute();
1037 unsigned AttributeSet::getParamAlignment(unsigned Index) const {
1038 AttributeSetNode *ASN = getAttributes(Index);
1039 return ASN ? ASN->getAlignment() : 0;
1042 unsigned AttributeSet::getStackAlignment(unsigned Index) const {
1043 AttributeSetNode *ASN = getAttributes(Index);
1044 return ASN ? ASN->getStackAlignment() : 0;
1047 uint64_t AttributeSet::getDereferenceableBytes(unsigned Index) const {
1048 AttributeSetNode *ASN = getAttributes(Index);
1049 return ASN ? ASN->getDereferenceableBytes() : 0;
1052 uint64_t AttributeSet::getDereferenceableOrNullBytes(unsigned Index) const {
1053 AttributeSetNode *ASN = getAttributes(Index);
1054 return ASN ? ASN->getDereferenceableOrNullBytes() : 0;
1057 std::string AttributeSet::getAsString(unsigned Index,
1058 bool InAttrGrp) const {
1059 AttributeSetNode *ASN = getAttributes(Index);
1060 return ASN ? ASN->getAsString(InAttrGrp) : std::string("");
1063 /// \brief The attributes for the specified index are returned.
1064 AttributeSetNode *AttributeSet::getAttributes(unsigned Index) const {
1065 if (!pImpl) return nullptr;
1067 // Loop through to find the attribute node we want.
1068 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
1069 if (pImpl->getSlotIndex(I) == Index)
1070 return pImpl->getSlotNode(I);
1075 AttributeSet::iterator AttributeSet::begin(unsigned Slot) const {
1077 return ArrayRef<Attribute>().begin();
1078 return pImpl->begin(Slot);
1081 AttributeSet::iterator AttributeSet::end(unsigned Slot) const {
1083 return ArrayRef<Attribute>().end();
1084 return pImpl->end(Slot);
1087 //===----------------------------------------------------------------------===//
1088 // AttributeSet Introspection Methods
1089 //===----------------------------------------------------------------------===//
1091 /// \brief Return the number of slots used in this attribute list. This is the
1092 /// number of arguments that have an attribute set on them (including the
1093 /// function itself).
1094 unsigned AttributeSet::getNumSlots() const {
1095 return pImpl ? pImpl->getNumAttributes() : 0;
1098 unsigned AttributeSet::getSlotIndex(unsigned Slot) const {
1099 assert(pImpl && Slot < pImpl->getNumAttributes() &&
1100 "Slot # out of range!");
1101 return pImpl->getSlotIndex(Slot);
1104 AttributeSet AttributeSet::getSlotAttributes(unsigned Slot) const {
1105 assert(pImpl && Slot < pImpl->getNumAttributes() &&
1106 "Slot # out of range!");
1107 return pImpl->getSlotAttributes(Slot);
1110 uint64_t AttributeSet::Raw(unsigned Index) const {
1111 // FIXME: Remove this.
1112 return pImpl ? pImpl->Raw(Index) : 0;
1115 void AttributeSet::dump() const {
1118 for (unsigned i = 0, e = getNumSlots(); i < e; ++i) {
1119 uint64_t Index = getSlotIndex(i);
1125 dbgs() << " => " << getAsString(Index) << " }\n";
1131 //===----------------------------------------------------------------------===//
1132 // AttrBuilder Method Implementations
1133 //===----------------------------------------------------------------------===//
1135 AttrBuilder::AttrBuilder(AttributeSet AS, unsigned Index)
1136 : Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0),
1137 DerefOrNullBytes(0) {
1138 AttributeSetImpl *pImpl = AS.pImpl;
1141 for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
1142 if (pImpl->getSlotIndex(I) != Index) continue;
1144 for (AttributeSetImpl::iterator II = pImpl->begin(I),
1145 IE = pImpl->end(I); II != IE; ++II)
1152 void AttrBuilder::clear() {
1154 TargetDepAttrs.clear();
1155 Alignment = StackAlignment = DerefBytes = DerefOrNullBytes = 0;
1158 AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
1159 assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
1160 assert(Val != Attribute::Alignment && Val != Attribute::StackAlignment &&
1161 Val != Attribute::Dereferenceable &&
1162 "Adding integer attribute without adding a value!");
1167 AttrBuilder &AttrBuilder::addAttribute(Attribute Attr) {
1168 if (Attr.isStringAttribute()) {
1169 addAttribute(Attr.getKindAsString(), Attr.getValueAsString());
1173 Attribute::AttrKind Kind = Attr.getKindAsEnum();
1176 if (Kind == Attribute::Alignment)
1177 Alignment = Attr.getAlignment();
1178 else if (Kind == Attribute::StackAlignment)
1179 StackAlignment = Attr.getStackAlignment();
1180 else if (Kind == Attribute::Dereferenceable)
1181 DerefBytes = Attr.getDereferenceableBytes();
1182 else if (Kind == Attribute::DereferenceableOrNull)
1183 DerefOrNullBytes = Attr.getDereferenceableOrNullBytes();
1187 AttrBuilder &AttrBuilder::addAttribute(StringRef A, StringRef V) {
1188 TargetDepAttrs[A] = V;
1192 AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
1193 assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
1196 if (Val == Attribute::Alignment)
1198 else if (Val == Attribute::StackAlignment)
1200 else if (Val == Attribute::Dereferenceable)
1202 else if (Val == Attribute::DereferenceableOrNull)
1203 DerefOrNullBytes = 0;
1208 AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
1209 unsigned Slot = ~0U;
1210 for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
1211 if (A.getSlotIndex(I) == Index) {
1216 assert(Slot != ~0U && "Couldn't find index in AttributeSet!");
1218 for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot); I != E; ++I) {
1219 Attribute Attr = *I;
1220 if (Attr.isEnumAttribute() || Attr.isIntAttribute()) {
1221 removeAttribute(Attr.getKindAsEnum());
1223 assert(Attr.isStringAttribute() && "Invalid attribute type!");
1224 removeAttribute(Attr.getKindAsString());
1231 AttrBuilder &AttrBuilder::removeAttribute(StringRef A) {
1232 std::map<std::string, std::string>::iterator I = TargetDepAttrs.find(A);
1233 if (I != TargetDepAttrs.end())
1234 TargetDepAttrs.erase(I);
1238 AttrBuilder &AttrBuilder::addAlignmentAttr(unsigned Align) {
1239 if (Align == 0) return *this;
1241 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
1242 assert(Align <= 0x40000000 && "Alignment too large.");
1244 Attrs[Attribute::Alignment] = true;
1249 AttrBuilder &AttrBuilder::addStackAlignmentAttr(unsigned Align) {
1250 // Default alignment, allow the target to define how to align it.
1251 if (Align == 0) return *this;
1253 assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
1254 assert(Align <= 0x100 && "Alignment too large.");
1256 Attrs[Attribute::StackAlignment] = true;
1257 StackAlignment = Align;
1261 AttrBuilder &AttrBuilder::addDereferenceableAttr(uint64_t Bytes) {
1262 if (Bytes == 0) return *this;
1264 Attrs[Attribute::Dereferenceable] = true;
1269 AttrBuilder &AttrBuilder::addDereferenceableOrNullAttr(uint64_t Bytes) {
1273 Attrs[Attribute::DereferenceableOrNull] = true;
1274 DerefOrNullBytes = Bytes;
1278 AttrBuilder &AttrBuilder::merge(const AttrBuilder &B) {
1279 // FIXME: What if both have alignments, but they don't match?!
1281 Alignment = B.Alignment;
1283 if (!StackAlignment)
1284 StackAlignment = B.StackAlignment;
1287 DerefBytes = B.DerefBytes;
1289 if (!DerefOrNullBytes)
1290 DerefOrNullBytes = B.DerefOrNullBytes;
1294 for (auto I : B.td_attrs())
1295 TargetDepAttrs[I.first] = I.second;
1300 AttrBuilder &AttrBuilder::remove(const AttrBuilder &B) {
1301 // FIXME: What if both have alignments, but they don't match?!
1305 if (B.StackAlignment)
1311 if (B.DerefOrNullBytes)
1312 DerefOrNullBytes = 0;
1316 for (auto I : B.td_attrs())
1317 TargetDepAttrs.erase(I.first);
1322 bool AttrBuilder::overlaps(const AttrBuilder &B) const {
1323 // First check if any of the target independent attributes overlap.
1324 if ((Attrs & B.Attrs).any())
1327 // Then check if any target dependent ones do.
1328 for (auto I : td_attrs())
1329 if (B.contains(I.first))
1335 bool AttrBuilder::contains(StringRef A) const {
1336 return TargetDepAttrs.find(A) != TargetDepAttrs.end();
1339 bool AttrBuilder::hasAttributes() const {
1340 return !Attrs.none() || !TargetDepAttrs.empty();
1343 bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
1344 unsigned Slot = ~0U;
1345 for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
1346 if (A.getSlotIndex(I) == Index) {
1351 assert(Slot != ~0U && "Couldn't find the index!");
1353 for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot); I != E; ++I) {
1354 Attribute Attr = *I;
1355 if (Attr.isEnumAttribute() || Attr.isIntAttribute()) {
1356 if (Attrs[I->getKindAsEnum()])
1359 assert(Attr.isStringAttribute() && "Invalid attribute kind!");
1360 return TargetDepAttrs.find(Attr.getKindAsString())!=TargetDepAttrs.end();
1367 bool AttrBuilder::hasAlignmentAttr() const {
1368 return Alignment != 0;
1371 bool AttrBuilder::operator==(const AttrBuilder &B) {
1372 if (Attrs != B.Attrs)
1375 for (td_const_iterator I = TargetDepAttrs.begin(),
1376 E = TargetDepAttrs.end(); I != E; ++I)
1377 if (B.TargetDepAttrs.find(I->first) == B.TargetDepAttrs.end())
1380 return Alignment == B.Alignment && StackAlignment == B.StackAlignment &&
1381 DerefBytes == B.DerefBytes;
1384 AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
1385 // FIXME: Remove this in 4.0.
1386 if (!Val) return *this;
1388 for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
1389 I = Attribute::AttrKind(I + 1)) {
1390 if (I == Attribute::Dereferenceable ||
1391 I == Attribute::DereferenceableOrNull ||
1392 I == Attribute::ArgMemOnly)
1394 if (uint64_t A = (Val & AttributeImpl::getAttrMask(I))) {
1397 if (I == Attribute::Alignment)
1398 Alignment = 1ULL << ((A >> 16) - 1);
1399 else if (I == Attribute::StackAlignment)
1400 StackAlignment = 1ULL << ((A >> 26)-1);
1407 //===----------------------------------------------------------------------===//
1408 // AttributeFuncs Function Defintions
1409 //===----------------------------------------------------------------------===//
1411 /// \brief Which attributes cannot be applied to a type.
1412 AttrBuilder AttributeFuncs::typeIncompatible(Type *Ty) {
1413 AttrBuilder Incompatible;
1415 if (!Ty->isIntegerTy())
1416 // Attribute that only apply to integers.
1417 Incompatible.addAttribute(Attribute::SExt)
1418 .addAttribute(Attribute::ZExt);
1420 if (!Ty->isPointerTy())
1421 // Attribute that only apply to pointers.
1422 Incompatible.addAttribute(Attribute::ByVal)
1423 .addAttribute(Attribute::Nest)
1424 .addAttribute(Attribute::NoAlias)
1425 .addAttribute(Attribute::NoCapture)
1426 .addAttribute(Attribute::NonNull)
1427 .addDereferenceableAttr(1) // the int here is ignored
1428 .addDereferenceableOrNullAttr(1) // the int here is ignored
1429 .addAttribute(Attribute::ReadNone)
1430 .addAttribute(Attribute::ReadOnly)
1431 .addAttribute(Attribute::StructRet)
1432 .addAttribute(Attribute::InAlloca);
1434 return Incompatible;
1437 template<typename AttrClass>
1438 static bool isEqual(const Function &Caller, const Function &Callee) {
1439 return Caller.getFnAttribute(AttrClass::getKind()) ==
1440 Callee.getFnAttribute(AttrClass::getKind());
1443 /// \brief Compute the logical AND of the attributes of the caller and the
1446 /// This function sets the caller's attribute to false if the callee's attribute
1448 template<typename AttrClass>
1449 static void setAND(Function &Caller, const Function &Callee) {
1450 if (AttrClass::isSet(Caller, AttrClass::getKind()) &&
1451 !AttrClass::isSet(Callee, AttrClass::getKind()))
1452 AttrClass::set(Caller, AttrClass::getKind(), false);
1455 /// \brief Compute the logical OR of the attributes of the caller and the
1458 /// This function sets the caller's attribute to true if the callee's attribute
1460 template<typename AttrClass>
1461 static void setOR(Function &Caller, const Function &Callee) {
1462 if (!AttrClass::isSet(Caller, AttrClass::getKind()) &&
1463 AttrClass::isSet(Callee, AttrClass::getKind()))
1464 AttrClass::set(Caller, AttrClass::getKind(), true);
1467 /// \brief If the inlined function had a higher stack protection level than the
1468 /// calling function, then bump up the caller's stack protection level.
1469 static void adjustCallerSSPLevel(Function &Caller, const Function &Callee) {
1470 // If upgrading the SSP attribute, clear out the old SSP Attributes first.
1471 // Having multiple SSP attributes doesn't actually hurt, but it adds useless
1472 // clutter to the IR.
1474 B.addAttribute(Attribute::StackProtect)
1475 .addAttribute(Attribute::StackProtectStrong)
1476 .addAttribute(Attribute::StackProtectReq);
1477 AttributeSet OldSSPAttr = AttributeSet::get(Caller.getContext(),
1478 AttributeSet::FunctionIndex,
1481 if (Callee.hasFnAttribute(Attribute::SafeStack)) {
1482 Caller.removeAttributes(AttributeSet::FunctionIndex, OldSSPAttr);
1483 Caller.addFnAttr(Attribute::SafeStack);
1484 } else if (Callee.hasFnAttribute(Attribute::StackProtectReq) &&
1485 !Caller.hasFnAttribute(Attribute::SafeStack)) {
1486 Caller.removeAttributes(AttributeSet::FunctionIndex, OldSSPAttr);
1487 Caller.addFnAttr(Attribute::StackProtectReq);
1488 } else if (Callee.hasFnAttribute(Attribute::StackProtectStrong) &&
1489 !Caller.hasFnAttribute(Attribute::SafeStack) &&
1490 !Caller.hasFnAttribute(Attribute::StackProtectReq)) {
1491 Caller.removeAttributes(AttributeSet::FunctionIndex, OldSSPAttr);
1492 Caller.addFnAttr(Attribute::StackProtectStrong);
1493 } else if (Callee.hasFnAttribute(Attribute::StackProtect) &&
1494 !Caller.hasFnAttribute(Attribute::SafeStack) &&
1495 !Caller.hasFnAttribute(Attribute::StackProtectReq) &&
1496 !Caller.hasFnAttribute(Attribute::StackProtectStrong))
1497 Caller.addFnAttr(Attribute::StackProtect);
1500 #define GET_ATTR_COMPAT_FUNC
1501 #include "AttributesCompatFunc.inc"
1503 bool AttributeFuncs::areInlineCompatible(const Function &Caller,
1504 const Function &Callee) {
1505 return hasCompatibleFnAttrs(Caller, Callee);
1509 void AttributeFuncs::mergeAttributesForInlining(Function &Caller,
1510 const Function &Callee) {
1511 mergeFnAttrs(Caller, Callee);