1 //===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===//
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 //===----------------------------------------------------------------------===//
10 // This library implements the functionality defined in llvm/IR/Writer.h
12 // Note that these routines must be extremely tolerant of various errors in the
13 // LLVM code, because it can be used for debugging transformations.
15 //===----------------------------------------------------------------------===//
17 #include "llvm/ADT/DenseMap.h"
18 #include "llvm/ADT/STLExtras.h"
19 #include "llvm/ADT/SetVector.h"
20 #include "llvm/ADT/SmallString.h"
21 #include "llvm/ADT/StringExtras.h"
22 #include "llvm/IR/AssemblyAnnotationWriter.h"
23 #include "llvm/IR/CFG.h"
24 #include "llvm/IR/CallingConv.h"
25 #include "llvm/IR/Constants.h"
26 #include "llvm/IR/DebugInfo.h"
27 #include "llvm/IR/DerivedTypes.h"
28 #include "llvm/IR/IRPrintingPasses.h"
29 #include "llvm/IR/InlineAsm.h"
30 #include "llvm/IR/IntrinsicInst.h"
31 #include "llvm/IR/LLVMContext.h"
32 #include "llvm/IR/Module.h"
33 #include "llvm/IR/Operator.h"
34 #include "llvm/IR/Statepoint.h"
35 #include "llvm/IR/TypeFinder.h"
36 #include "llvm/IR/UseListOrder.h"
37 #include "llvm/IR/ValueSymbolTable.h"
38 #include "llvm/Support/Debug.h"
39 #include "llvm/Support/Dwarf.h"
40 #include "llvm/Support/ErrorHandling.h"
41 #include "llvm/Support/FormattedStream.h"
42 #include "llvm/Support/MathExtras.h"
43 #include "llvm/Support/raw_ostream.h"
48 // Make virtual table appear in this compilation unit.
49 AssemblyAnnotationWriter::~AssemblyAnnotationWriter() {}
51 //===----------------------------------------------------------------------===//
53 //===----------------------------------------------------------------------===//
57 DenseMap<const Value *, std::pair<unsigned, bool>> IDs;
59 unsigned size() const { return IDs.size(); }
60 std::pair<unsigned, bool> &operator[](const Value *V) { return IDs[V]; }
61 std::pair<unsigned, bool> lookup(const Value *V) const {
64 void index(const Value *V) {
65 // Explicitly sequence get-size and insert-value operations to avoid UB.
66 unsigned ID = IDs.size() + 1;
72 static void orderValue(const Value *V, OrderMap &OM) {
73 if (OM.lookup(V).first)
76 if (const Constant *C = dyn_cast<Constant>(V))
77 if (C->getNumOperands() && !isa<GlobalValue>(C))
78 for (const Value *Op : C->operands())
79 if (!isa<BasicBlock>(Op) && !isa<GlobalValue>(Op))
82 // Note: we cannot cache this lookup above, since inserting into the map
83 // changes the map's size, and thus affects the other IDs.
87 static OrderMap orderModule(const Module *M) {
88 // This needs to match the order used by ValueEnumerator::ValueEnumerator()
89 // and ValueEnumerator::incorporateFunction().
92 for (const GlobalVariable &G : M->globals()) {
93 if (G.hasInitializer())
94 if (!isa<GlobalValue>(G.getInitializer()))
95 orderValue(G.getInitializer(), OM);
98 for (const GlobalAlias &A : M->aliases()) {
99 if (!isa<GlobalValue>(A.getAliasee()))
100 orderValue(A.getAliasee(), OM);
103 for (const Function &F : *M) {
104 if (F.hasPrefixData())
105 if (!isa<GlobalValue>(F.getPrefixData()))
106 orderValue(F.getPrefixData(), OM);
108 if (F.hasPrologueData())
109 if (!isa<GlobalValue>(F.getPrologueData()))
110 orderValue(F.getPrologueData(), OM);
114 if (F.isDeclaration())
117 for (const Argument &A : F.args())
119 for (const BasicBlock &BB : F) {
121 for (const Instruction &I : BB) {
122 for (const Value *Op : I.operands())
123 if ((isa<Constant>(*Op) && !isa<GlobalValue>(*Op)) ||
133 static void predictValueUseListOrderImpl(const Value *V, const Function *F,
134 unsigned ID, const OrderMap &OM,
135 UseListOrderStack &Stack) {
136 // Predict use-list order for this one.
137 typedef std::pair<const Use *, unsigned> Entry;
138 SmallVector<Entry, 64> List;
139 for (const Use &U : V->uses())
140 // Check if this user will be serialized.
141 if (OM.lookup(U.getUser()).first)
142 List.push_back(std::make_pair(&U, List.size()));
145 // We may have lost some users.
149 !isa<GlobalVariable>(V) && !isa<Function>(V) && !isa<BasicBlock>(V);
150 if (auto *BA = dyn_cast<BlockAddress>(V))
151 ID = OM.lookup(BA->getBasicBlock()).first;
152 std::sort(List.begin(), List.end(), [&](const Entry &L, const Entry &R) {
153 const Use *LU = L.first;
154 const Use *RU = R.first;
158 auto LID = OM.lookup(LU->getUser()).first;
159 auto RID = OM.lookup(RU->getUser()).first;
161 // If ID is 4, then expect: 7 6 5 1 2 3.
175 // LID and RID are equal, so we have different operands of the same user.
176 // Assume operands are added in order for all instructions.
179 return LU->getOperandNo() < RU->getOperandNo();
180 return LU->getOperandNo() > RU->getOperandNo();
184 List.begin(), List.end(),
185 [](const Entry &L, const Entry &R) { return L.second < R.second; }))
186 // Order is already correct.
189 // Store the shuffle.
190 Stack.emplace_back(V, F, List.size());
191 assert(List.size() == Stack.back().Shuffle.size() && "Wrong size");
192 for (size_t I = 0, E = List.size(); I != E; ++I)
193 Stack.back().Shuffle[I] = List[I].second;
196 static void predictValueUseListOrder(const Value *V, const Function *F,
197 OrderMap &OM, UseListOrderStack &Stack) {
198 auto &IDPair = OM[V];
199 assert(IDPair.first && "Unmapped value");
201 // Already predicted.
204 // Do the actual prediction.
205 IDPair.second = true;
206 if (!V->use_empty() && std::next(V->use_begin()) != V->use_end())
207 predictValueUseListOrderImpl(V, F, IDPair.first, OM, Stack);
209 // Recursive descent into constants.
210 if (const Constant *C = dyn_cast<Constant>(V))
211 if (C->getNumOperands()) // Visit GlobalValues.
212 for (const Value *Op : C->operands())
213 if (isa<Constant>(Op)) // Visit GlobalValues.
214 predictValueUseListOrder(Op, F, OM, Stack);
217 static UseListOrderStack predictUseListOrder(const Module *M) {
218 OrderMap OM = orderModule(M);
220 // Use-list orders need to be serialized after all the users have been added
221 // to a value, or else the shuffles will be incomplete. Store them per
222 // function in a stack.
224 // Aside from function order, the order of values doesn't matter much here.
225 UseListOrderStack Stack;
227 // We want to visit the functions backward now so we can list function-local
228 // constants in the last Function they're used in. Module-level constants
229 // have already been visited above.
230 for (auto I = M->rbegin(), E = M->rend(); I != E; ++I) {
231 const Function &F = *I;
232 if (F.isDeclaration())
234 for (const BasicBlock &BB : F)
235 predictValueUseListOrder(&BB, &F, OM, Stack);
236 for (const Argument &A : F.args())
237 predictValueUseListOrder(&A, &F, OM, Stack);
238 for (const BasicBlock &BB : F)
239 for (const Instruction &I : BB)
240 for (const Value *Op : I.operands())
241 if (isa<Constant>(*Op) || isa<InlineAsm>(*Op)) // Visit GlobalValues.
242 predictValueUseListOrder(Op, &F, OM, Stack);
243 for (const BasicBlock &BB : F)
244 for (const Instruction &I : BB)
245 predictValueUseListOrder(&I, &F, OM, Stack);
248 // Visit globals last.
249 for (const GlobalVariable &G : M->globals())
250 predictValueUseListOrder(&G, nullptr, OM, Stack);
251 for (const Function &F : *M)
252 predictValueUseListOrder(&F, nullptr, OM, Stack);
253 for (const GlobalAlias &A : M->aliases())
254 predictValueUseListOrder(&A, nullptr, OM, Stack);
255 for (const GlobalVariable &G : M->globals())
256 if (G.hasInitializer())
257 predictValueUseListOrder(G.getInitializer(), nullptr, OM, Stack);
258 for (const GlobalAlias &A : M->aliases())
259 predictValueUseListOrder(A.getAliasee(), nullptr, OM, Stack);
260 for (const Function &F : *M)
261 if (F.hasPrefixData())
262 predictValueUseListOrder(F.getPrefixData(), nullptr, OM, Stack);
267 static const Module *getModuleFromVal(const Value *V) {
268 if (const Argument *MA = dyn_cast<Argument>(V))
269 return MA->getParent() ? MA->getParent()->getParent() : nullptr;
271 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
272 return BB->getParent() ? BB->getParent()->getParent() : nullptr;
274 if (const Instruction *I = dyn_cast<Instruction>(V)) {
275 const Function *M = I->getParent() ? I->getParent()->getParent() : nullptr;
276 return M ? M->getParent() : nullptr;
279 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V))
280 return GV->getParent();
282 if (const auto *MAV = dyn_cast<MetadataAsValue>(V)) {
283 for (const User *U : MAV->users())
284 if (isa<Instruction>(U))
285 if (const Module *M = getModuleFromVal(U))
293 static void PrintCallingConv(unsigned cc, raw_ostream &Out) {
295 default: Out << "cc" << cc; break;
296 case CallingConv::Fast: Out << "fastcc"; break;
297 case CallingConv::Cold: Out << "coldcc"; break;
298 case CallingConv::WebKit_JS: Out << "webkit_jscc"; break;
299 case CallingConv::AnyReg: Out << "anyregcc"; break;
300 case CallingConv::PreserveMost: Out << "preserve_mostcc"; break;
301 case CallingConv::PreserveAll: Out << "preserve_allcc"; break;
302 case CallingConv::GHC: Out << "ghccc"; break;
303 case CallingConv::X86_StdCall: Out << "x86_stdcallcc"; break;
304 case CallingConv::X86_FastCall: Out << "x86_fastcallcc"; break;
305 case CallingConv::X86_ThisCall: Out << "x86_thiscallcc"; break;
306 case CallingConv::X86_VectorCall:Out << "x86_vectorcallcc"; break;
307 case CallingConv::Intel_OCL_BI: Out << "intel_ocl_bicc"; break;
308 case CallingConv::ARM_APCS: Out << "arm_apcscc"; break;
309 case CallingConv::ARM_AAPCS: Out << "arm_aapcscc"; break;
310 case CallingConv::ARM_AAPCS_VFP: Out << "arm_aapcs_vfpcc"; break;
311 case CallingConv::MSP430_INTR: Out << "msp430_intrcc"; break;
312 case CallingConv::PTX_Kernel: Out << "ptx_kernel"; break;
313 case CallingConv::PTX_Device: Out << "ptx_device"; break;
314 case CallingConv::X86_64_SysV: Out << "x86_64_sysvcc"; break;
315 case CallingConv::X86_64_Win64: Out << "x86_64_win64cc"; break;
316 case CallingConv::SPIR_FUNC: Out << "spir_func"; break;
317 case CallingConv::SPIR_KERNEL: Out << "spir_kernel"; break;
321 // PrintEscapedString - Print each character of the specified string, escaping
322 // it if it is not printable or if it is an escape char.
323 static void PrintEscapedString(StringRef Name, raw_ostream &Out) {
324 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
325 unsigned char C = Name[i];
326 if (isprint(C) && C != '\\' && C != '"')
329 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
341 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
342 /// prefixed with % (if the string only contains simple characters) or is
343 /// surrounded with ""'s (if it has special chars in it). Print it out.
344 static void PrintLLVMName(raw_ostream &OS, StringRef Name, PrefixType Prefix) {
345 assert(!Name.empty() && "Cannot get empty name!");
347 case NoPrefix: break;
348 case GlobalPrefix: OS << '@'; break;
349 case ComdatPrefix: OS << '$'; break;
350 case LabelPrefix: break;
351 case LocalPrefix: OS << '%'; break;
354 // Scan the name to see if it needs quotes first.
355 bool NeedsQuotes = isdigit(static_cast<unsigned char>(Name[0]));
357 for (unsigned i = 0, e = Name.size(); i != e; ++i) {
358 // By making this unsigned, the value passed in to isalnum will always be
359 // in the range 0-255. This is important when building with MSVC because
360 // its implementation will assert. This situation can arise when dealing
361 // with UTF-8 multibyte characters.
362 unsigned char C = Name[i];
363 if (!isalnum(static_cast<unsigned char>(C)) && C != '-' && C != '.' &&
371 // If we didn't need any quotes, just write out the name in one blast.
377 // Okay, we need quotes. Output the quotes and escape any scary characters as
380 PrintEscapedString(Name, OS);
384 /// PrintLLVMName - Turn the specified name into an 'LLVM name', which is either
385 /// prefixed with % (if the string only contains simple characters) or is
386 /// surrounded with ""'s (if it has special chars in it). Print it out.
387 static void PrintLLVMName(raw_ostream &OS, const Value *V) {
388 PrintLLVMName(OS, V->getName(),
389 isa<GlobalValue>(V) ? GlobalPrefix : LocalPrefix);
395 TypePrinting(const TypePrinting &) = delete;
396 void operator=(const TypePrinting&) = delete;
399 /// NamedTypes - The named types that are used by the current module.
400 TypeFinder NamedTypes;
402 /// NumberedTypes - The numbered types, along with their value.
403 DenseMap<StructType*, unsigned> NumberedTypes;
405 TypePrinting() = default;
407 void incorporateTypes(const Module &M);
409 void print(Type *Ty, raw_ostream &OS);
411 void printStructBody(StructType *Ty, raw_ostream &OS);
415 void TypePrinting::incorporateTypes(const Module &M) {
416 NamedTypes.run(M, false);
418 // The list of struct types we got back includes all the struct types, split
419 // the unnamed ones out to a numbering and remove the anonymous structs.
420 unsigned NextNumber = 0;
422 std::vector<StructType*>::iterator NextToUse = NamedTypes.begin(), I, E;
423 for (I = NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I) {
424 StructType *STy = *I;
426 // Ignore anonymous types.
427 if (STy->isLiteral())
430 if (STy->getName().empty())
431 NumberedTypes[STy] = NextNumber++;
436 NamedTypes.erase(NextToUse, NamedTypes.end());
440 /// CalcTypeName - Write the specified type to the specified raw_ostream, making
441 /// use of type names or up references to shorten the type name where possible.
442 void TypePrinting::print(Type *Ty, raw_ostream &OS) {
443 switch (Ty->getTypeID()) {
444 case Type::VoidTyID: OS << "void"; return;
445 case Type::HalfTyID: OS << "half"; return;
446 case Type::FloatTyID: OS << "float"; return;
447 case Type::DoubleTyID: OS << "double"; return;
448 case Type::X86_FP80TyID: OS << "x86_fp80"; return;
449 case Type::FP128TyID: OS << "fp128"; return;
450 case Type::PPC_FP128TyID: OS << "ppc_fp128"; return;
451 case Type::LabelTyID: OS << "label"; return;
452 case Type::MetadataTyID: OS << "metadata"; return;
453 case Type::X86_MMXTyID: OS << "x86_mmx"; return;
454 case Type::IntegerTyID:
455 OS << 'i' << cast<IntegerType>(Ty)->getBitWidth();
458 case Type::FunctionTyID: {
459 FunctionType *FTy = cast<FunctionType>(Ty);
460 print(FTy->getReturnType(), OS);
462 for (FunctionType::param_iterator I = FTy->param_begin(),
463 E = FTy->param_end(); I != E; ++I) {
464 if (I != FTy->param_begin())
468 if (FTy->isVarArg()) {
469 if (FTy->getNumParams()) OS << ", ";
475 case Type::StructTyID: {
476 StructType *STy = cast<StructType>(Ty);
478 if (STy->isLiteral())
479 return printStructBody(STy, OS);
481 if (!STy->getName().empty())
482 return PrintLLVMName(OS, STy->getName(), LocalPrefix);
484 DenseMap<StructType*, unsigned>::iterator I = NumberedTypes.find(STy);
485 if (I != NumberedTypes.end())
486 OS << '%' << I->second;
487 else // Not enumerated, print the hex address.
488 OS << "%\"type " << STy << '\"';
491 case Type::PointerTyID: {
492 PointerType *PTy = cast<PointerType>(Ty);
493 print(PTy->getElementType(), OS);
494 if (unsigned AddressSpace = PTy->getAddressSpace())
495 OS << " addrspace(" << AddressSpace << ')';
499 case Type::ArrayTyID: {
500 ArrayType *ATy = cast<ArrayType>(Ty);
501 OS << '[' << ATy->getNumElements() << " x ";
502 print(ATy->getElementType(), OS);
506 case Type::VectorTyID: {
507 VectorType *PTy = cast<VectorType>(Ty);
508 OS << "<" << PTy->getNumElements() << " x ";
509 print(PTy->getElementType(), OS);
514 llvm_unreachable("Invalid TypeID");
517 void TypePrinting::printStructBody(StructType *STy, raw_ostream &OS) {
518 if (STy->isOpaque()) {
526 if (STy->getNumElements() == 0) {
529 StructType::element_iterator I = STy->element_begin();
532 for (StructType::element_iterator E = STy->element_end(); I != E; ++I) {
544 //===----------------------------------------------------------------------===//
545 // SlotTracker Class: Enumerate slot numbers for unnamed values
546 //===----------------------------------------------------------------------===//
547 /// This class provides computation of slot numbers for LLVM Assembly writing.
551 /// ValueMap - A mapping of Values to slot numbers.
552 typedef DenseMap<const Value*, unsigned> ValueMap;
555 /// TheModule - The module for which we are holding slot numbers.
556 const Module* TheModule;
558 /// TheFunction - The function for which we are holding slot numbers.
559 const Function* TheFunction;
560 bool FunctionProcessed;
561 bool ShouldInitializeAllMetadata;
563 /// mMap - The slot map for the module level data.
567 /// fMap - The slot map for the function level data.
571 /// mdnMap - Map for MDNodes.
572 DenseMap<const MDNode*, unsigned> mdnMap;
575 /// asMap - The slot map for attribute sets.
576 DenseMap<AttributeSet, unsigned> asMap;
579 /// Construct from a module.
581 /// If \c ShouldInitializeAllMetadata, initializes all metadata in all
582 /// functions, giving correct numbering for metadata referenced only from
583 /// within a function (even if no functions have been initialized).
584 explicit SlotTracker(const Module *M,
585 bool ShouldInitializeAllMetadata = false);
586 /// Construct from a function, starting out in incorp state.
588 /// If \c ShouldInitializeAllMetadata, initializes all metadata in all
589 /// functions, giving correct numbering for metadata referenced only from
590 /// within a function (even if no functions have been initialized).
591 explicit SlotTracker(const Function *F,
592 bool ShouldInitializeAllMetadata = false);
594 /// Return the slot number of the specified value in it's type
595 /// plane. If something is not in the SlotTracker, return -1.
596 int getLocalSlot(const Value *V);
597 int getGlobalSlot(const GlobalValue *V);
598 int getMetadataSlot(const MDNode *N);
599 int getAttributeGroupSlot(AttributeSet AS);
601 /// If you'd like to deal with a function instead of just a module, use
602 /// this method to get its data into the SlotTracker.
603 void incorporateFunction(const Function *F) {
605 FunctionProcessed = false;
608 const Function *getFunction() const { return TheFunction; }
610 /// After calling incorporateFunction, use this method to remove the
611 /// most recently incorporated function from the SlotTracker. This
612 /// will reset the state of the machine back to just the module contents.
613 void purgeFunction();
615 /// MDNode map iterators.
616 typedef DenseMap<const MDNode*, unsigned>::iterator mdn_iterator;
617 mdn_iterator mdn_begin() { return mdnMap.begin(); }
618 mdn_iterator mdn_end() { return mdnMap.end(); }
619 unsigned mdn_size() const { return mdnMap.size(); }
620 bool mdn_empty() const { return mdnMap.empty(); }
622 /// AttributeSet map iterators.
623 typedef DenseMap<AttributeSet, unsigned>::iterator as_iterator;
624 as_iterator as_begin() { return asMap.begin(); }
625 as_iterator as_end() { return asMap.end(); }
626 unsigned as_size() const { return asMap.size(); }
627 bool as_empty() const { return asMap.empty(); }
629 /// This function does the actual initialization.
630 inline void initialize();
632 // Implementation Details
634 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
635 void CreateModuleSlot(const GlobalValue *V);
637 /// CreateMetadataSlot - Insert the specified MDNode* into the slot table.
638 void CreateMetadataSlot(const MDNode *N);
640 /// CreateFunctionSlot - Insert the specified Value* into the slot table.
641 void CreateFunctionSlot(const Value *V);
643 /// \brief Insert the specified AttributeSet into the slot table.
644 void CreateAttributeSetSlot(AttributeSet AS);
646 /// Add all of the module level global variables (and their initializers)
647 /// and function declarations, but not the contents of those functions.
648 void processModule();
650 /// Add all of the functions arguments, basic blocks, and instructions.
651 void processFunction();
653 /// Add all of the metadata from a function.
654 void processFunctionMetadata(const Function &F);
656 /// Add all of the metadata from an instruction.
657 void processInstructionMetadata(const Instruction &I);
659 SlotTracker(const SlotTracker &) = delete;
660 void operator=(const SlotTracker &) = delete;
664 static SlotTracker *createSlotTracker(const Module *M) {
665 return new SlotTracker(M);
668 static SlotTracker *createSlotTracker(const Value *V) {
669 if (const Argument *FA = dyn_cast<Argument>(V))
670 return new SlotTracker(FA->getParent());
672 if (const Instruction *I = dyn_cast<Instruction>(V))
674 return new SlotTracker(I->getParent()->getParent());
676 if (const BasicBlock *BB = dyn_cast<BasicBlock>(V))
677 return new SlotTracker(BB->getParent());
679 if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
680 return new SlotTracker(GV->getParent());
682 if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
683 return new SlotTracker(GA->getParent());
685 if (const Function *Func = dyn_cast<Function>(V))
686 return new SlotTracker(Func);
692 #define ST_DEBUG(X) dbgs() << X
697 // Module level constructor. Causes the contents of the Module (sans functions)
698 // to be added to the slot table.
699 SlotTracker::SlotTracker(const Module *M, bool ShouldInitializeAllMetadata)
700 : TheModule(M), TheFunction(nullptr), FunctionProcessed(false),
701 ShouldInitializeAllMetadata(ShouldInitializeAllMetadata), mNext(0),
702 fNext(0), mdnNext(0), asNext(0) {}
704 // Function level constructor. Causes the contents of the Module and the one
705 // function provided to be added to the slot table.
706 SlotTracker::SlotTracker(const Function *F, bool ShouldInitializeAllMetadata)
707 : TheModule(F ? F->getParent() : nullptr), TheFunction(F),
708 FunctionProcessed(false),
709 ShouldInitializeAllMetadata(ShouldInitializeAllMetadata), mNext(0),
710 fNext(0), mdnNext(0), asNext(0) {}
712 inline void SlotTracker::initialize() {
715 TheModule = nullptr; ///< Prevent re-processing next time we're called.
718 if (TheFunction && !FunctionProcessed)
722 // Iterate through all the global variables, functions, and global
723 // variable initializers and create slots for them.
724 void SlotTracker::processModule() {
725 ST_DEBUG("begin processModule!\n");
727 // Add all of the unnamed global variables to the value table.
728 for (const GlobalVariable &Var : TheModule->globals()) {
730 CreateModuleSlot(&Var);
733 // Add metadata used by named metadata.
734 for (const NamedMDNode &NMD : TheModule->named_metadata()) {
735 for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i)
736 CreateMetadataSlot(NMD.getOperand(i));
739 for (const Function &F : *TheModule) {
741 // Add all the unnamed functions to the table.
742 CreateModuleSlot(&F);
744 if (ShouldInitializeAllMetadata)
745 processFunctionMetadata(F);
747 // Add all the function attributes to the table.
748 // FIXME: Add attributes of other objects?
749 AttributeSet FnAttrs = F.getAttributes().getFnAttributes();
750 if (FnAttrs.hasAttributes(AttributeSet::FunctionIndex))
751 CreateAttributeSetSlot(FnAttrs);
754 ST_DEBUG("end processModule!\n");
757 // Process the arguments, basic blocks, and instructions of a function.
758 void SlotTracker::processFunction() {
759 ST_DEBUG("begin processFunction!\n");
762 // Add all the function arguments with no names.
763 for(Function::const_arg_iterator AI = TheFunction->arg_begin(),
764 AE = TheFunction->arg_end(); AI != AE; ++AI)
766 CreateFunctionSlot(AI);
768 ST_DEBUG("Inserting Instructions:\n");
770 // Add all of the basic blocks and instructions with no names.
771 for (auto &BB : *TheFunction) {
773 CreateFunctionSlot(&BB);
775 processFunctionMetadata(*TheFunction);
778 if (!I.getType()->isVoidTy() && !I.hasName())
779 CreateFunctionSlot(&I);
781 // We allow direct calls to any llvm.foo function here, because the
782 // target may not be linked into the optimizer.
783 if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
784 // Add all the call attributes to the table.
785 AttributeSet Attrs = CI->getAttributes().getFnAttributes();
786 if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
787 CreateAttributeSetSlot(Attrs);
788 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
789 // Add all the call attributes to the table.
790 AttributeSet Attrs = II->getAttributes().getFnAttributes();
791 if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
792 CreateAttributeSetSlot(Attrs);
797 FunctionProcessed = true;
799 ST_DEBUG("end processFunction!\n");
802 void SlotTracker::processFunctionMetadata(const Function &F) {
803 SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
805 F.getAllMetadata(MDs);
807 CreateMetadataSlot(MD.second);
810 processInstructionMetadata(I);
814 void SlotTracker::processInstructionMetadata(const Instruction &I) {
815 // Process metadata used directly by intrinsics.
816 if (const CallInst *CI = dyn_cast<CallInst>(&I))
817 if (Function *F = CI->getCalledFunction())
818 if (F->isIntrinsic())
819 for (auto &Op : I.operands())
820 if (auto *V = dyn_cast_or_null<MetadataAsValue>(Op))
821 if (MDNode *N = dyn_cast<MDNode>(V->getMetadata()))
822 CreateMetadataSlot(N);
824 // Process metadata attached to this instruction.
825 SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
826 I.getAllMetadata(MDs);
828 CreateMetadataSlot(MD.second);
831 /// Clean up after incorporating a function. This is the only way to get out of
832 /// the function incorporation state that affects get*Slot/Create*Slot. Function
833 /// incorporation state is indicated by TheFunction != 0.
834 void SlotTracker::purgeFunction() {
835 ST_DEBUG("begin purgeFunction!\n");
836 fMap.clear(); // Simply discard the function level map
837 TheFunction = nullptr;
838 FunctionProcessed = false;
839 ST_DEBUG("end purgeFunction!\n");
842 /// getGlobalSlot - Get the slot number of a global value.
843 int SlotTracker::getGlobalSlot(const GlobalValue *V) {
844 // Check for uninitialized state and do lazy initialization.
847 // Find the value in the module map
848 ValueMap::iterator MI = mMap.find(V);
849 return MI == mMap.end() ? -1 : (int)MI->second;
852 /// getMetadataSlot - Get the slot number of a MDNode.
853 int SlotTracker::getMetadataSlot(const MDNode *N) {
854 // Check for uninitialized state and do lazy initialization.
857 // Find the MDNode in the module map
858 mdn_iterator MI = mdnMap.find(N);
859 return MI == mdnMap.end() ? -1 : (int)MI->second;
863 /// getLocalSlot - Get the slot number for a value that is local to a function.
864 int SlotTracker::getLocalSlot(const Value *V) {
865 assert(!isa<Constant>(V) && "Can't get a constant or global slot with this!");
867 // Check for uninitialized state and do lazy initialization.
870 ValueMap::iterator FI = fMap.find(V);
871 return FI == fMap.end() ? -1 : (int)FI->second;
874 int SlotTracker::getAttributeGroupSlot(AttributeSet AS) {
875 // Check for uninitialized state and do lazy initialization.
878 // Find the AttributeSet in the module map.
879 as_iterator AI = asMap.find(AS);
880 return AI == asMap.end() ? -1 : (int)AI->second;
883 /// CreateModuleSlot - Insert the specified GlobalValue* into the slot table.
884 void SlotTracker::CreateModuleSlot(const GlobalValue *V) {
885 assert(V && "Can't insert a null Value into SlotTracker!");
886 assert(!V->getType()->isVoidTy() && "Doesn't need a slot!");
887 assert(!V->hasName() && "Doesn't need a slot!");
889 unsigned DestSlot = mNext++;
892 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
894 // G = Global, F = Function, A = Alias, o = other
895 ST_DEBUG((isa<GlobalVariable>(V) ? 'G' :
896 (isa<Function>(V) ? 'F' :
897 (isa<GlobalAlias>(V) ? 'A' : 'o'))) << "]\n");
900 /// CreateSlot - Create a new slot for the specified value if it has no name.
901 void SlotTracker::CreateFunctionSlot(const Value *V) {
902 assert(!V->getType()->isVoidTy() && !V->hasName() && "Doesn't need a slot!");
904 unsigned DestSlot = fNext++;
907 // G = Global, F = Function, o = other
908 ST_DEBUG(" Inserting value [" << V->getType() << "] = " << V << " slot=" <<
909 DestSlot << " [o]\n");
912 /// CreateModuleSlot - Insert the specified MDNode* into the slot table.
913 void SlotTracker::CreateMetadataSlot(const MDNode *N) {
914 assert(N && "Can't insert a null Value into SlotTracker!");
916 unsigned DestSlot = mdnNext;
917 if (!mdnMap.insert(std::make_pair(N, DestSlot)).second)
921 // Recursively add any MDNodes referenced by operands.
922 for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
923 if (const MDNode *Op = dyn_cast_or_null<MDNode>(N->getOperand(i)))
924 CreateMetadataSlot(Op);
927 void SlotTracker::CreateAttributeSetSlot(AttributeSet AS) {
928 assert(AS.hasAttributes(AttributeSet::FunctionIndex) &&
929 "Doesn't need a slot!");
931 as_iterator I = asMap.find(AS);
932 if (I != asMap.end())
935 unsigned DestSlot = asNext++;
936 asMap[AS] = DestSlot;
939 //===----------------------------------------------------------------------===//
940 // AsmWriter Implementation
941 //===----------------------------------------------------------------------===//
943 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
944 TypePrinting *TypePrinter,
945 SlotTracker *Machine,
946 const Module *Context);
948 static void WriteAsOperandInternal(raw_ostream &Out, const Metadata *MD,
949 TypePrinting *TypePrinter,
950 SlotTracker *Machine, const Module *Context,
951 bool FromValue = false);
953 static const char *getPredicateText(unsigned predicate) {
954 const char * pred = "unknown";
956 case FCmpInst::FCMP_FALSE: pred = "false"; break;
957 case FCmpInst::FCMP_OEQ: pred = "oeq"; break;
958 case FCmpInst::FCMP_OGT: pred = "ogt"; break;
959 case FCmpInst::FCMP_OGE: pred = "oge"; break;
960 case FCmpInst::FCMP_OLT: pred = "olt"; break;
961 case FCmpInst::FCMP_OLE: pred = "ole"; break;
962 case FCmpInst::FCMP_ONE: pred = "one"; break;
963 case FCmpInst::FCMP_ORD: pred = "ord"; break;
964 case FCmpInst::FCMP_UNO: pred = "uno"; break;
965 case FCmpInst::FCMP_UEQ: pred = "ueq"; break;
966 case FCmpInst::FCMP_UGT: pred = "ugt"; break;
967 case FCmpInst::FCMP_UGE: pred = "uge"; break;
968 case FCmpInst::FCMP_ULT: pred = "ult"; break;
969 case FCmpInst::FCMP_ULE: pred = "ule"; break;
970 case FCmpInst::FCMP_UNE: pred = "une"; break;
971 case FCmpInst::FCMP_TRUE: pred = "true"; break;
972 case ICmpInst::ICMP_EQ: pred = "eq"; break;
973 case ICmpInst::ICMP_NE: pred = "ne"; break;
974 case ICmpInst::ICMP_SGT: pred = "sgt"; break;
975 case ICmpInst::ICMP_SGE: pred = "sge"; break;
976 case ICmpInst::ICMP_SLT: pred = "slt"; break;
977 case ICmpInst::ICMP_SLE: pred = "sle"; break;
978 case ICmpInst::ICMP_UGT: pred = "ugt"; break;
979 case ICmpInst::ICMP_UGE: pred = "uge"; break;
980 case ICmpInst::ICMP_ULT: pred = "ult"; break;
981 case ICmpInst::ICMP_ULE: pred = "ule"; break;
986 static void writeAtomicRMWOperation(raw_ostream &Out,
987 AtomicRMWInst::BinOp Op) {
989 default: Out << " <unknown operation " << Op << ">"; break;
990 case AtomicRMWInst::Xchg: Out << " xchg"; break;
991 case AtomicRMWInst::Add: Out << " add"; break;
992 case AtomicRMWInst::Sub: Out << " sub"; break;
993 case AtomicRMWInst::And: Out << " and"; break;
994 case AtomicRMWInst::Nand: Out << " nand"; break;
995 case AtomicRMWInst::Or: Out << " or"; break;
996 case AtomicRMWInst::Xor: Out << " xor"; break;
997 case AtomicRMWInst::Max: Out << " max"; break;
998 case AtomicRMWInst::Min: Out << " min"; break;
999 case AtomicRMWInst::UMax: Out << " umax"; break;
1000 case AtomicRMWInst::UMin: Out << " umin"; break;
1004 static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
1005 if (const FPMathOperator *FPO = dyn_cast<const FPMathOperator>(U)) {
1006 // Unsafe algebra implies all the others, no need to write them all out
1007 if (FPO->hasUnsafeAlgebra())
1010 if (FPO->hasNoNaNs())
1012 if (FPO->hasNoInfs())
1014 if (FPO->hasNoSignedZeros())
1016 if (FPO->hasAllowReciprocal())
1021 if (const OverflowingBinaryOperator *OBO =
1022 dyn_cast<OverflowingBinaryOperator>(U)) {
1023 if (OBO->hasNoUnsignedWrap())
1025 if (OBO->hasNoSignedWrap())
1027 } else if (const PossiblyExactOperator *Div =
1028 dyn_cast<PossiblyExactOperator>(U)) {
1031 } else if (const GEPOperator *GEP = dyn_cast<GEPOperator>(U)) {
1032 if (GEP->isInBounds())
1037 static void WriteConstantInternal(raw_ostream &Out, const Constant *CV,
1038 TypePrinting &TypePrinter,
1039 SlotTracker *Machine,
1040 const Module *Context) {
1041 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1042 if (CI->getType()->isIntegerTy(1)) {
1043 Out << (CI->getZExtValue() ? "true" : "false");
1046 Out << CI->getValue();
1050 if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
1051 if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEsingle ||
1052 &CFP->getValueAPF().getSemantics() == &APFloat::IEEEdouble) {
1053 // We would like to output the FP constant value in exponential notation,
1054 // but we cannot do this if doing so will lose precision. Check here to
1055 // make sure that we only output it in exponential format if we can parse
1056 // the value back and get the same value.
1059 bool isHalf = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEhalf;
1060 bool isDouble = &CFP->getValueAPF().getSemantics()==&APFloat::IEEEdouble;
1061 bool isInf = CFP->getValueAPF().isInfinity();
1062 bool isNaN = CFP->getValueAPF().isNaN();
1063 if (!isHalf && !isInf && !isNaN) {
1064 double Val = isDouble ? CFP->getValueAPF().convertToDouble() :
1065 CFP->getValueAPF().convertToFloat();
1066 SmallString<128> StrVal;
1067 raw_svector_ostream(StrVal) << Val;
1069 // Check to make sure that the stringized number is not some string like
1070 // "Inf" or NaN, that atof will accept, but the lexer will not. Check
1071 // that the string matches the "[-+]?[0-9]" regex.
1073 if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
1074 ((StrVal[0] == '-' || StrVal[0] == '+') &&
1075 (StrVal[1] >= '0' && StrVal[1] <= '9'))) {
1076 // Reparse stringized version!
1077 if (APFloat(APFloat::IEEEdouble, StrVal).convertToDouble() == Val) {
1083 // Otherwise we could not reparse it to exactly the same value, so we must
1084 // output the string in hexadecimal format! Note that loading and storing
1085 // floating point types changes the bits of NaNs on some hosts, notably
1086 // x86, so we must not use these types.
1087 static_assert(sizeof(double) == sizeof(uint64_t),
1088 "assuming that double is 64 bits!");
1090 APFloat apf = CFP->getValueAPF();
1091 // Halves and floats are represented in ASCII IR as double, convert.
1093 apf.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
1096 utohex_buffer(uint64_t(apf.bitcastToAPInt().getZExtValue()),
1101 // Either half, or some form of long double.
1102 // These appear as a magic letter identifying the type, then a
1103 // fixed number of hex digits.
1105 // Bit position, in the current word, of the next nibble to print.
1108 if (&CFP->getValueAPF().getSemantics() == &APFloat::x87DoubleExtended) {
1110 // api needed to prevent premature destruction
1111 APInt api = CFP->getValueAPF().bitcastToAPInt();
1112 const uint64_t* p = api.getRawData();
1113 uint64_t word = p[1];
1115 int width = api.getBitWidth();
1116 for (int j=0; j<width; j+=4, shiftcount-=4) {
1117 unsigned int nibble = (word>>shiftcount) & 15;
1119 Out << (unsigned char)(nibble + '0');
1121 Out << (unsigned char)(nibble - 10 + 'A');
1122 if (shiftcount == 0 && j+4 < width) {
1126 shiftcount = width-j-4;
1130 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEquad) {
1133 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble) {
1136 } else if (&CFP->getValueAPF().getSemantics() == &APFloat::IEEEhalf) {
1140 llvm_unreachable("Unsupported floating point type");
1141 // api needed to prevent premature destruction
1142 APInt api = CFP->getValueAPF().bitcastToAPInt();
1143 const uint64_t* p = api.getRawData();
1145 int width = api.getBitWidth();
1146 for (int j=0; j<width; j+=4, shiftcount-=4) {
1147 unsigned int nibble = (word>>shiftcount) & 15;
1149 Out << (unsigned char)(nibble + '0');
1151 Out << (unsigned char)(nibble - 10 + 'A');
1152 if (shiftcount == 0 && j+4 < width) {
1156 shiftcount = width-j-4;
1162 if (isa<ConstantAggregateZero>(CV)) {
1163 Out << "zeroinitializer";
1167 if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV)) {
1168 Out << "blockaddress(";
1169 WriteAsOperandInternal(Out, BA->getFunction(), &TypePrinter, Machine,
1172 WriteAsOperandInternal(Out, BA->getBasicBlock(), &TypePrinter, Machine,
1178 if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
1179 Type *ETy = CA->getType()->getElementType();
1181 TypePrinter.print(ETy, Out);
1183 WriteAsOperandInternal(Out, CA->getOperand(0),
1184 &TypePrinter, Machine,
1186 for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
1188 TypePrinter.print(ETy, Out);
1190 WriteAsOperandInternal(Out, CA->getOperand(i), &TypePrinter, Machine,
1197 if (const ConstantDataArray *CA = dyn_cast<ConstantDataArray>(CV)) {
1198 // As a special case, print the array as a string if it is an array of
1199 // i8 with ConstantInt values.
1200 if (CA->isString()) {
1202 PrintEscapedString(CA->getAsString(), Out);
1207 Type *ETy = CA->getType()->getElementType();
1209 TypePrinter.print(ETy, Out);
1211 WriteAsOperandInternal(Out, CA->getElementAsConstant(0),
1212 &TypePrinter, Machine,
1214 for (unsigned i = 1, e = CA->getNumElements(); i != e; ++i) {
1216 TypePrinter.print(ETy, Out);
1218 WriteAsOperandInternal(Out, CA->getElementAsConstant(i), &TypePrinter,
1226 if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
1227 if (CS->getType()->isPacked())
1230 unsigned N = CS->getNumOperands();
1233 TypePrinter.print(CS->getOperand(0)->getType(), Out);
1236 WriteAsOperandInternal(Out, CS->getOperand(0), &TypePrinter, Machine,
1239 for (unsigned i = 1; i < N; i++) {
1241 TypePrinter.print(CS->getOperand(i)->getType(), Out);
1244 WriteAsOperandInternal(Out, CS->getOperand(i), &TypePrinter, Machine,
1251 if (CS->getType()->isPacked())
1256 if (isa<ConstantVector>(CV) || isa<ConstantDataVector>(CV)) {
1257 Type *ETy = CV->getType()->getVectorElementType();
1259 TypePrinter.print(ETy, Out);
1261 WriteAsOperandInternal(Out, CV->getAggregateElement(0U), &TypePrinter,
1263 for (unsigned i = 1, e = CV->getType()->getVectorNumElements(); i != e;++i){
1265 TypePrinter.print(ETy, Out);
1267 WriteAsOperandInternal(Out, CV->getAggregateElement(i), &TypePrinter,
1274 if (isa<ConstantPointerNull>(CV)) {
1279 if (isa<UndefValue>(CV)) {
1284 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
1285 Out << CE->getOpcodeName();
1286 WriteOptimizationInfo(Out, CE);
1287 if (CE->isCompare())
1288 Out << ' ' << getPredicateText(CE->getPredicate());
1291 if (const GEPOperator *GEP = dyn_cast<GEPOperator>(CE)) {
1293 cast<PointerType>(GEP->getPointerOperandType()->getScalarType())
1299 for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
1300 TypePrinter.print((*OI)->getType(), Out);
1302 WriteAsOperandInternal(Out, *OI, &TypePrinter, Machine, Context);
1303 if (OI+1 != CE->op_end())
1307 if (CE->hasIndices()) {
1308 ArrayRef<unsigned> Indices = CE->getIndices();
1309 for (unsigned i = 0, e = Indices.size(); i != e; ++i)
1310 Out << ", " << Indices[i];
1315 TypePrinter.print(CE->getType(), Out);
1322 Out << "<placeholder or erroneous Constant>";
1325 static void writeMDTuple(raw_ostream &Out, const MDTuple *Node,
1326 TypePrinting *TypePrinter, SlotTracker *Machine,
1327 const Module *Context) {
1329 for (unsigned mi = 0, me = Node->getNumOperands(); mi != me; ++mi) {
1330 const Metadata *MD = Node->getOperand(mi);
1333 else if (auto *MDV = dyn_cast<ValueAsMetadata>(MD)) {
1334 Value *V = MDV->getValue();
1335 TypePrinter->print(V->getType(), Out);
1337 WriteAsOperandInternal(Out, V, TypePrinter, Machine, Context);
1339 WriteAsOperandInternal(Out, MD, TypePrinter, Machine, Context);
1349 struct FieldSeparator {
1352 FieldSeparator(const char *Sep = ", ") : Skip(true), Sep(Sep) {}
1354 raw_ostream &operator<<(raw_ostream &OS, FieldSeparator &FS) {
1359 return OS << FS.Sep;
1361 struct MDFieldPrinter {
1364 TypePrinting *TypePrinter;
1365 SlotTracker *Machine;
1366 const Module *Context;
1368 explicit MDFieldPrinter(raw_ostream &Out)
1369 : Out(Out), TypePrinter(nullptr), Machine(nullptr), Context(nullptr) {}
1370 MDFieldPrinter(raw_ostream &Out, TypePrinting *TypePrinter,
1371 SlotTracker *Machine, const Module *Context)
1372 : Out(Out), TypePrinter(TypePrinter), Machine(Machine), Context(Context) {
1374 void printTag(const DINode *N);
1375 void printString(StringRef Name, StringRef Value,
1376 bool ShouldSkipEmpty = true);
1377 void printMetadata(StringRef Name, const Metadata *MD,
1378 bool ShouldSkipNull = true);
1379 template <class IntTy>
1380 void printInt(StringRef Name, IntTy Int, bool ShouldSkipZero = true);
1381 void printBool(StringRef Name, bool Value);
1382 void printDIFlags(StringRef Name, unsigned Flags);
1383 template <class IntTy, class Stringifier>
1384 void printDwarfEnum(StringRef Name, IntTy Value, Stringifier toString,
1385 bool ShouldSkipZero = true);
1389 void MDFieldPrinter::printTag(const DINode *N) {
1390 Out << FS << "tag: ";
1391 if (const char *Tag = dwarf::TagString(N->getTag()))
1397 void MDFieldPrinter::printString(StringRef Name, StringRef Value,
1398 bool ShouldSkipEmpty) {
1399 if (ShouldSkipEmpty && Value.empty())
1402 Out << FS << Name << ": \"";
1403 PrintEscapedString(Value, Out);
1407 static void writeMetadataAsOperand(raw_ostream &Out, const Metadata *MD,
1408 TypePrinting *TypePrinter,
1409 SlotTracker *Machine,
1410 const Module *Context) {
1415 WriteAsOperandInternal(Out, MD, TypePrinter, Machine, Context);
1418 void MDFieldPrinter::printMetadata(StringRef Name, const Metadata *MD,
1419 bool ShouldSkipNull) {
1420 if (ShouldSkipNull && !MD)
1423 Out << FS << Name << ": ";
1424 writeMetadataAsOperand(Out, MD, TypePrinter, Machine, Context);
1427 template <class IntTy>
1428 void MDFieldPrinter::printInt(StringRef Name, IntTy Int, bool ShouldSkipZero) {
1429 if (ShouldSkipZero && !Int)
1432 Out << FS << Name << ": " << Int;
1435 void MDFieldPrinter::printBool(StringRef Name, bool Value) {
1436 Out << FS << Name << ": " << (Value ? "true" : "false");
1439 void MDFieldPrinter::printDIFlags(StringRef Name, unsigned Flags) {
1443 Out << FS << Name << ": ";
1445 SmallVector<unsigned, 8> SplitFlags;
1446 unsigned Extra = DINode::splitFlags(Flags, SplitFlags);
1448 FieldSeparator FlagsFS(" | ");
1449 for (unsigned F : SplitFlags) {
1450 const char *StringF = DINode::getFlagString(F);
1451 assert(StringF && "Expected valid flag");
1452 Out << FlagsFS << StringF;
1454 if (Extra || SplitFlags.empty())
1455 Out << FlagsFS << Extra;
1458 template <class IntTy, class Stringifier>
1459 void MDFieldPrinter::printDwarfEnum(StringRef Name, IntTy Value,
1460 Stringifier toString, bool ShouldSkipZero) {
1464 Out << FS << Name << ": ";
1465 if (const char *S = toString(Value))
1471 static void writeGenericDINode(raw_ostream &Out, const GenericDINode *N,
1472 TypePrinting *TypePrinter, SlotTracker *Machine,
1473 const Module *Context) {
1474 Out << "!GenericDINode(";
1475 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1476 Printer.printTag(N);
1477 Printer.printString("header", N->getHeader());
1478 if (N->getNumDwarfOperands()) {
1479 Out << Printer.FS << "operands: {";
1481 for (auto &I : N->dwarf_operands()) {
1483 writeMetadataAsOperand(Out, I, TypePrinter, Machine, Context);
1490 static void writeDILocation(raw_ostream &Out, const DILocation *DL,
1491 TypePrinting *TypePrinter, SlotTracker *Machine,
1492 const Module *Context) {
1493 Out << "!DILocation(";
1494 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1495 // Always output the line, since 0 is a relevant and important value for it.
1496 Printer.printInt("line", DL->getLine(), /* ShouldSkipZero */ false);
1497 Printer.printInt("column", DL->getColumn());
1498 Printer.printMetadata("scope", DL->getRawScope(), /* ShouldSkipNull */ false);
1499 Printer.printMetadata("inlinedAt", DL->getRawInlinedAt());
1503 static void writeDISubrange(raw_ostream &Out, const DISubrange *N,
1504 TypePrinting *, SlotTracker *, const Module *) {
1505 Out << "!DISubrange(";
1506 MDFieldPrinter Printer(Out);
1507 Printer.printInt("count", N->getCount(), /* ShouldSkipZero */ false);
1508 Printer.printInt("lowerBound", N->getLowerBound());
1512 static void writeDIEnumerator(raw_ostream &Out, const DIEnumerator *N,
1513 TypePrinting *, SlotTracker *, const Module *) {
1514 Out << "!DIEnumerator(";
1515 MDFieldPrinter Printer(Out);
1516 Printer.printString("name", N->getName(), /* ShouldSkipEmpty */ false);
1517 Printer.printInt("value", N->getValue(), /* ShouldSkipZero */ false);
1521 static void writeDIBasicType(raw_ostream &Out, const DIBasicType *N,
1522 TypePrinting *, SlotTracker *, const Module *) {
1523 Out << "!DIBasicType(";
1524 MDFieldPrinter Printer(Out);
1525 if (N->getTag() != dwarf::DW_TAG_base_type)
1526 Printer.printTag(N);
1527 Printer.printString("name", N->getName());
1528 Printer.printInt("size", N->getSizeInBits());
1529 Printer.printInt("align", N->getAlignInBits());
1530 Printer.printDwarfEnum("encoding", N->getEncoding(),
1531 dwarf::AttributeEncodingString);
1535 static void writeDIDerivedType(raw_ostream &Out, const DIDerivedType *N,
1536 TypePrinting *TypePrinter, SlotTracker *Machine,
1537 const Module *Context) {
1538 Out << "!DIDerivedType(";
1539 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1540 Printer.printTag(N);
1541 Printer.printString("name", N->getName());
1542 Printer.printMetadata("scope", N->getRawScope());
1543 Printer.printMetadata("file", N->getRawFile());
1544 Printer.printInt("line", N->getLine());
1545 Printer.printMetadata("baseType", N->getRawBaseType(),
1546 /* ShouldSkipNull */ false);
1547 Printer.printInt("size", N->getSizeInBits());
1548 Printer.printInt("align", N->getAlignInBits());
1549 Printer.printInt("offset", N->getOffsetInBits());
1550 Printer.printDIFlags("flags", N->getFlags());
1551 Printer.printMetadata("extraData", N->getRawExtraData());
1555 static void writeDICompositeType(raw_ostream &Out, const DICompositeType *N,
1556 TypePrinting *TypePrinter,
1557 SlotTracker *Machine, const Module *Context) {
1558 Out << "!DICompositeType(";
1559 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1560 Printer.printTag(N);
1561 Printer.printString("name", N->getName());
1562 Printer.printMetadata("scope", N->getRawScope());
1563 Printer.printMetadata("file", N->getRawFile());
1564 Printer.printInt("line", N->getLine());
1565 Printer.printMetadata("baseType", N->getRawBaseType());
1566 Printer.printInt("size", N->getSizeInBits());
1567 Printer.printInt("align", N->getAlignInBits());
1568 Printer.printInt("offset", N->getOffsetInBits());
1569 Printer.printDIFlags("flags", N->getFlags());
1570 Printer.printMetadata("elements", N->getRawElements());
1571 Printer.printDwarfEnum("runtimeLang", N->getRuntimeLang(),
1572 dwarf::LanguageString);
1573 Printer.printMetadata("vtableHolder", N->getRawVTableHolder());
1574 Printer.printMetadata("templateParams", N->getRawTemplateParams());
1575 Printer.printString("identifier", N->getIdentifier());
1579 static void writeDISubroutineType(raw_ostream &Out, const DISubroutineType *N,
1580 TypePrinting *TypePrinter,
1581 SlotTracker *Machine, const Module *Context) {
1582 Out << "!DISubroutineType(";
1583 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1584 Printer.printDIFlags("flags", N->getFlags());
1585 Printer.printMetadata("types", N->getRawTypeArray(),
1586 /* ShouldSkipNull */ false);
1590 static void writeDIFile(raw_ostream &Out, const DIFile *N, TypePrinting *,
1591 SlotTracker *, const Module *) {
1593 MDFieldPrinter Printer(Out);
1594 Printer.printString("filename", N->getFilename(),
1595 /* ShouldSkipEmpty */ false);
1596 Printer.printString("directory", N->getDirectory(),
1597 /* ShouldSkipEmpty */ false);
1601 static void writeDICompileUnit(raw_ostream &Out, const DICompileUnit *N,
1602 TypePrinting *TypePrinter, SlotTracker *Machine,
1603 const Module *Context) {
1604 Out << "!DICompileUnit(";
1605 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1606 Printer.printDwarfEnum("language", N->getSourceLanguage(),
1607 dwarf::LanguageString, /* ShouldSkipZero */ false);
1608 Printer.printMetadata("file", N->getRawFile(), /* ShouldSkipNull */ false);
1609 Printer.printString("producer", N->getProducer());
1610 Printer.printBool("isOptimized", N->isOptimized());
1611 Printer.printString("flags", N->getFlags());
1612 Printer.printInt("runtimeVersion", N->getRuntimeVersion(),
1613 /* ShouldSkipZero */ false);
1614 Printer.printString("splitDebugFilename", N->getSplitDebugFilename());
1615 Printer.printInt("emissionKind", N->getEmissionKind(),
1616 /* ShouldSkipZero */ false);
1617 Printer.printMetadata("enums", N->getRawEnumTypes());
1618 Printer.printMetadata("retainedTypes", N->getRawRetainedTypes());
1619 Printer.printMetadata("subprograms", N->getRawSubprograms());
1620 Printer.printMetadata("globals", N->getRawGlobalVariables());
1621 Printer.printMetadata("imports", N->getRawImportedEntities());
1622 Printer.printInt("dwoId", N->getDWOId());
1626 static void writeDISubprogram(raw_ostream &Out, const DISubprogram *N,
1627 TypePrinting *TypePrinter, SlotTracker *Machine,
1628 const Module *Context) {
1629 Out << "!DISubprogram(";
1630 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1631 Printer.printString("name", N->getName());
1632 Printer.printString("linkageName", N->getLinkageName());
1633 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1634 Printer.printMetadata("file", N->getRawFile());
1635 Printer.printInt("line", N->getLine());
1636 Printer.printMetadata("type", N->getRawType());
1637 Printer.printBool("isLocal", N->isLocalToUnit());
1638 Printer.printBool("isDefinition", N->isDefinition());
1639 Printer.printInt("scopeLine", N->getScopeLine());
1640 Printer.printMetadata("containingType", N->getRawContainingType());
1641 Printer.printDwarfEnum("virtuality", N->getVirtuality(),
1642 dwarf::VirtualityString);
1643 Printer.printInt("virtualIndex", N->getVirtualIndex());
1644 Printer.printDIFlags("flags", N->getFlags());
1645 Printer.printBool("isOptimized", N->isOptimized());
1646 Printer.printMetadata("function", N->getRawFunction());
1647 Printer.printMetadata("templateParams", N->getRawTemplateParams());
1648 Printer.printMetadata("declaration", N->getRawDeclaration());
1649 Printer.printMetadata("variables", N->getRawVariables());
1653 static void writeDILexicalBlock(raw_ostream &Out, const DILexicalBlock *N,
1654 TypePrinting *TypePrinter, SlotTracker *Machine,
1655 const Module *Context) {
1656 Out << "!DILexicalBlock(";
1657 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1658 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1659 Printer.printMetadata("file", N->getRawFile());
1660 Printer.printInt("line", N->getLine());
1661 Printer.printInt("column", N->getColumn());
1665 static void writeDILexicalBlockFile(raw_ostream &Out,
1666 const DILexicalBlockFile *N,
1667 TypePrinting *TypePrinter,
1668 SlotTracker *Machine,
1669 const Module *Context) {
1670 Out << "!DILexicalBlockFile(";
1671 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1672 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1673 Printer.printMetadata("file", N->getRawFile());
1674 Printer.printInt("discriminator", N->getDiscriminator(),
1675 /* ShouldSkipZero */ false);
1679 static void writeDINamespace(raw_ostream &Out, const DINamespace *N,
1680 TypePrinting *TypePrinter, SlotTracker *Machine,
1681 const Module *Context) {
1682 Out << "!DINamespace(";
1683 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1684 Printer.printString("name", N->getName());
1685 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1686 Printer.printMetadata("file", N->getRawFile());
1687 Printer.printInt("line", N->getLine());
1691 static void writeDITemplateTypeParameter(raw_ostream &Out,
1692 const DITemplateTypeParameter *N,
1693 TypePrinting *TypePrinter,
1694 SlotTracker *Machine,
1695 const Module *Context) {
1696 Out << "!DITemplateTypeParameter(";
1697 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1698 Printer.printString("name", N->getName());
1699 Printer.printMetadata("type", N->getRawType(), /* ShouldSkipNull */ false);
1703 static void writeDITemplateValueParameter(raw_ostream &Out,
1704 const DITemplateValueParameter *N,
1705 TypePrinting *TypePrinter,
1706 SlotTracker *Machine,
1707 const Module *Context) {
1708 Out << "!DITemplateValueParameter(";
1709 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1710 if (N->getTag() != dwarf::DW_TAG_template_value_parameter)
1711 Printer.printTag(N);
1712 Printer.printString("name", N->getName());
1713 Printer.printMetadata("type", N->getRawType());
1714 Printer.printMetadata("value", N->getValue(), /* ShouldSkipNull */ false);
1718 static void writeDIGlobalVariable(raw_ostream &Out, const DIGlobalVariable *N,
1719 TypePrinting *TypePrinter,
1720 SlotTracker *Machine, const Module *Context) {
1721 Out << "!DIGlobalVariable(";
1722 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1723 Printer.printString("name", N->getName());
1724 Printer.printString("linkageName", N->getLinkageName());
1725 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1726 Printer.printMetadata("file", N->getRawFile());
1727 Printer.printInt("line", N->getLine());
1728 Printer.printMetadata("type", N->getRawType());
1729 Printer.printBool("isLocal", N->isLocalToUnit());
1730 Printer.printBool("isDefinition", N->isDefinition());
1731 Printer.printMetadata("variable", N->getRawVariable());
1732 Printer.printMetadata("declaration", N->getRawStaticDataMemberDeclaration());
1736 static void writeDILocalVariable(raw_ostream &Out, const DILocalVariable *N,
1737 TypePrinting *TypePrinter,
1738 SlotTracker *Machine, const Module *Context) {
1739 Out << "!DILocalVariable(";
1740 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1741 Printer.printTag(N);
1742 Printer.printString("name", N->getName());
1743 Printer.printInt("arg", N->getArg(),
1744 /* ShouldSkipZero */
1745 N->getTag() == dwarf::DW_TAG_auto_variable);
1746 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1747 Printer.printMetadata("file", N->getRawFile());
1748 Printer.printInt("line", N->getLine());
1749 Printer.printMetadata("type", N->getRawType());
1750 Printer.printDIFlags("flags", N->getFlags());
1754 static void writeDIExpression(raw_ostream &Out, const DIExpression *N,
1755 TypePrinting *TypePrinter, SlotTracker *Machine,
1756 const Module *Context) {
1757 Out << "!DIExpression(";
1760 for (auto I = N->expr_op_begin(), E = N->expr_op_end(); I != E; ++I) {
1761 const char *OpStr = dwarf::OperationEncodingString(I->getOp());
1762 assert(OpStr && "Expected valid opcode");
1765 for (unsigned A = 0, AE = I->getNumArgs(); A != AE; ++A)
1766 Out << FS << I->getArg(A);
1769 for (const auto &I : N->getElements())
1775 static void writeDIObjCProperty(raw_ostream &Out, const DIObjCProperty *N,
1776 TypePrinting *TypePrinter, SlotTracker *Machine,
1777 const Module *Context) {
1778 Out << "!DIObjCProperty(";
1779 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1780 Printer.printString("name", N->getName());
1781 Printer.printMetadata("file", N->getRawFile());
1782 Printer.printInt("line", N->getLine());
1783 Printer.printString("setter", N->getSetterName());
1784 Printer.printString("getter", N->getGetterName());
1785 Printer.printInt("attributes", N->getAttributes());
1786 Printer.printMetadata("type", N->getRawType());
1790 static void writeDIImportedEntity(raw_ostream &Out, const DIImportedEntity *N,
1791 TypePrinting *TypePrinter,
1792 SlotTracker *Machine, const Module *Context) {
1793 Out << "!DIImportedEntity(";
1794 MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
1795 Printer.printTag(N);
1796 Printer.printString("name", N->getName());
1797 Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
1798 Printer.printMetadata("entity", N->getRawEntity());
1799 Printer.printInt("line", N->getLine());
1804 static void WriteMDNodeBodyInternal(raw_ostream &Out, const MDNode *Node,
1805 TypePrinting *TypePrinter,
1806 SlotTracker *Machine,
1807 const Module *Context) {
1808 if (Node->isDistinct())
1810 else if (Node->isTemporary())
1811 Out << "<temporary!> "; // Handle broken code.
1813 switch (Node->getMetadataID()) {
1815 llvm_unreachable("Expected uniquable MDNode");
1816 #define HANDLE_MDNODE_LEAF(CLASS) \
1817 case Metadata::CLASS##Kind: \
1818 write##CLASS(Out, cast<CLASS>(Node), TypePrinter, Machine, Context); \
1820 #include "llvm/IR/Metadata.def"
1824 // Full implementation of printing a Value as an operand with support for
1825 // TypePrinting, etc.
1826 static void WriteAsOperandInternal(raw_ostream &Out, const Value *V,
1827 TypePrinting *TypePrinter,
1828 SlotTracker *Machine,
1829 const Module *Context) {
1831 PrintLLVMName(Out, V);
1835 const Constant *CV = dyn_cast<Constant>(V);
1836 if (CV && !isa<GlobalValue>(CV)) {
1837 assert(TypePrinter && "Constants require TypePrinting!");
1838 WriteConstantInternal(Out, CV, *TypePrinter, Machine, Context);
1842 if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
1844 if (IA->hasSideEffects())
1845 Out << "sideeffect ";
1846 if (IA->isAlignStack())
1847 Out << "alignstack ";
1848 // We don't emit the AD_ATT dialect as it's the assumed default.
1849 if (IA->getDialect() == InlineAsm::AD_Intel)
1850 Out << "inteldialect ";
1852 PrintEscapedString(IA->getAsmString(), Out);
1854 PrintEscapedString(IA->getConstraintString(), Out);
1859 if (auto *MD = dyn_cast<MetadataAsValue>(V)) {
1860 WriteAsOperandInternal(Out, MD->getMetadata(), TypePrinter, Machine,
1861 Context, /* FromValue */ true);
1867 // If we have a SlotTracker, use it.
1869 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1870 Slot = Machine->getGlobalSlot(GV);
1873 Slot = Machine->getLocalSlot(V);
1875 // If the local value didn't succeed, then we may be referring to a value
1876 // from a different function. Translate it, as this can happen when using
1877 // address of blocks.
1879 if ((Machine = createSlotTracker(V))) {
1880 Slot = Machine->getLocalSlot(V);
1884 } else if ((Machine = createSlotTracker(V))) {
1885 // Otherwise, create one to get the # and then destroy it.
1886 if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
1887 Slot = Machine->getGlobalSlot(GV);
1890 Slot = Machine->getLocalSlot(V);
1899 Out << Prefix << Slot;
1904 static void WriteAsOperandInternal(raw_ostream &Out, const Metadata *MD,
1905 TypePrinting *TypePrinter,
1906 SlotTracker *Machine, const Module *Context,
1908 if (const MDNode *N = dyn_cast<MDNode>(MD)) {
1910 Machine = new SlotTracker(Context);
1911 int Slot = Machine->getMetadataSlot(N);
1913 // Give the pointer value instead of "badref", since this comes up all
1914 // the time when debugging.
1915 Out << "<" << N << ">";
1921 if (const MDString *MDS = dyn_cast<MDString>(MD)) {
1923 PrintEscapedString(MDS->getString(), Out);
1928 auto *V = cast<ValueAsMetadata>(MD);
1929 assert(TypePrinter && "TypePrinter required for metadata values");
1930 assert((FromValue || !isa<LocalAsMetadata>(V)) &&
1931 "Unexpected function-local metadata outside of value argument");
1933 TypePrinter->print(V->getValue()->getType(), Out);
1935 WriteAsOperandInternal(Out, V->getValue(), TypePrinter, Machine, Context);
1939 class AssemblyWriter {
1940 formatted_raw_ostream &Out;
1941 const Module *TheModule;
1942 std::unique_ptr<SlotTracker> ModuleSlotTracker;
1943 SlotTracker &Machine;
1944 TypePrinting TypePrinter;
1945 AssemblyAnnotationWriter *AnnotationWriter;
1946 SetVector<const Comdat *> Comdats;
1947 bool ShouldPreserveUseListOrder;
1948 UseListOrderStack UseListOrders;
1949 SmallVector<StringRef, 8> MDNames;
1952 /// Construct an AssemblyWriter with an external SlotTracker
1953 AssemblyWriter(formatted_raw_ostream &o, SlotTracker &Mac, const Module *M,
1954 AssemblyAnnotationWriter *AAW,
1955 bool ShouldPreserveUseListOrder = false);
1957 /// Construct an AssemblyWriter with an internally allocated SlotTracker
1958 AssemblyWriter(formatted_raw_ostream &o, const Module *M,
1959 AssemblyAnnotationWriter *AAW,
1960 bool ShouldPreserveUseListOrder = false);
1962 void printMDNodeBody(const MDNode *MD);
1963 void printNamedMDNode(const NamedMDNode *NMD);
1965 void printModule(const Module *M);
1967 void writeOperand(const Value *Op, bool PrintType);
1968 void writeParamOperand(const Value *Operand, AttributeSet Attrs,unsigned Idx);
1969 void writeAtomic(AtomicOrdering Ordering, SynchronizationScope SynchScope);
1970 void writeAtomicCmpXchg(AtomicOrdering SuccessOrdering,
1971 AtomicOrdering FailureOrdering,
1972 SynchronizationScope SynchScope);
1974 void writeAllMDNodes();
1975 void writeMDNode(unsigned Slot, const MDNode *Node);
1976 void writeAllAttributeGroups();
1978 void printTypeIdentities();
1979 void printGlobal(const GlobalVariable *GV);
1980 void printAlias(const GlobalAlias *GV);
1981 void printComdat(const Comdat *C);
1982 void printFunction(const Function *F);
1983 void printArgument(const Argument *FA, AttributeSet Attrs, unsigned Idx);
1984 void printBasicBlock(const BasicBlock *BB);
1985 void printInstructionLine(const Instruction &I);
1986 void printInstruction(const Instruction &I);
1988 void printUseListOrder(const UseListOrder &Order);
1989 void printUseLists(const Function *F);
1994 /// \brief Print out metadata attachments.
1995 void printMetadataAttachments(
1996 const SmallVectorImpl<std::pair<unsigned, MDNode *>> &MDs,
1997 StringRef Separator);
1999 // printInfoComment - Print a little comment after the instruction indicating
2000 // which slot it occupies.
2001 void printInfoComment(const Value &V);
2003 // printGCRelocateComment - print comment after call to the gc.relocate
2004 // intrinsic indicating base and derived pointer names.
2005 void printGCRelocateComment(const Value &V);
2009 void AssemblyWriter::init() {
2012 TypePrinter.incorporateTypes(*TheModule);
2013 for (const Function &F : *TheModule)
2014 if (const Comdat *C = F.getComdat())
2016 for (const GlobalVariable &GV : TheModule->globals())
2017 if (const Comdat *C = GV.getComdat())
2021 AssemblyWriter::AssemblyWriter(formatted_raw_ostream &o, SlotTracker &Mac,
2022 const Module *M, AssemblyAnnotationWriter *AAW,
2023 bool ShouldPreserveUseListOrder)
2024 : Out(o), TheModule(M), Machine(Mac), AnnotationWriter(AAW),
2025 ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) {
2029 AssemblyWriter::AssemblyWriter(formatted_raw_ostream &o, const Module *M,
2030 AssemblyAnnotationWriter *AAW,
2031 bool ShouldPreserveUseListOrder)
2032 : Out(o), TheModule(M), ModuleSlotTracker(createSlotTracker(M)),
2033 Machine(*ModuleSlotTracker), AnnotationWriter(AAW),
2034 ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) {
2038 void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType) {
2040 Out << "<null operand!>";
2044 TypePrinter.print(Operand->getType(), Out);
2047 WriteAsOperandInternal(Out, Operand, &TypePrinter, &Machine, TheModule);
2050 void AssemblyWriter::writeAtomic(AtomicOrdering Ordering,
2051 SynchronizationScope SynchScope) {
2052 if (Ordering == NotAtomic)
2055 switch (SynchScope) {
2056 case SingleThread: Out << " singlethread"; break;
2057 case CrossThread: break;
2061 default: Out << " <bad ordering " << int(Ordering) << ">"; break;
2062 case Unordered: Out << " unordered"; break;
2063 case Monotonic: Out << " monotonic"; break;
2064 case Acquire: Out << " acquire"; break;
2065 case Release: Out << " release"; break;
2066 case AcquireRelease: Out << " acq_rel"; break;
2067 case SequentiallyConsistent: Out << " seq_cst"; break;
2071 void AssemblyWriter::writeAtomicCmpXchg(AtomicOrdering SuccessOrdering,
2072 AtomicOrdering FailureOrdering,
2073 SynchronizationScope SynchScope) {
2074 assert(SuccessOrdering != NotAtomic && FailureOrdering != NotAtomic);
2076 switch (SynchScope) {
2077 case SingleThread: Out << " singlethread"; break;
2078 case CrossThread: break;
2081 switch (SuccessOrdering) {
2082 default: Out << " <bad ordering " << int(SuccessOrdering) << ">"; break;
2083 case Unordered: Out << " unordered"; break;
2084 case Monotonic: Out << " monotonic"; break;
2085 case Acquire: Out << " acquire"; break;
2086 case Release: Out << " release"; break;
2087 case AcquireRelease: Out << " acq_rel"; break;
2088 case SequentiallyConsistent: Out << " seq_cst"; break;
2091 switch (FailureOrdering) {
2092 default: Out << " <bad ordering " << int(FailureOrdering) << ">"; break;
2093 case Unordered: Out << " unordered"; break;
2094 case Monotonic: Out << " monotonic"; break;
2095 case Acquire: Out << " acquire"; break;
2096 case Release: Out << " release"; break;
2097 case AcquireRelease: Out << " acq_rel"; break;
2098 case SequentiallyConsistent: Out << " seq_cst"; break;
2102 void AssemblyWriter::writeParamOperand(const Value *Operand,
2103 AttributeSet Attrs, unsigned Idx) {
2105 Out << "<null operand!>";
2110 TypePrinter.print(Operand->getType(), Out);
2111 // Print parameter attributes list
2112 if (Attrs.hasAttributes(Idx))
2113 Out << ' ' << Attrs.getAsString(Idx);
2115 // Print the operand
2116 WriteAsOperandInternal(Out, Operand, &TypePrinter, &Machine, TheModule);
2119 void AssemblyWriter::printModule(const Module *M) {
2120 Machine.initialize();
2122 if (ShouldPreserveUseListOrder)
2123 UseListOrders = predictUseListOrder(M);
2125 if (!M->getModuleIdentifier().empty() &&
2126 // Don't print the ID if it will start a new line (which would
2127 // require a comment char before it).
2128 M->getModuleIdentifier().find('\n') == std::string::npos)
2129 Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n";
2131 const std::string &DL = M->getDataLayoutStr();
2133 Out << "target datalayout = \"" << DL << "\"\n";
2134 if (!M->getTargetTriple().empty())
2135 Out << "target triple = \"" << M->getTargetTriple() << "\"\n";
2137 if (!M->getModuleInlineAsm().empty()) {
2140 // Split the string into lines, to make it easier to read the .ll file.
2141 StringRef Asm = M->getModuleInlineAsm();
2144 std::tie(Front, Asm) = Asm.split('\n');
2146 // We found a newline, print the portion of the asm string from the
2147 // last newline up to this newline.
2148 Out << "module asm \"";
2149 PrintEscapedString(Front, Out);
2151 } while (!Asm.empty());
2154 printTypeIdentities();
2156 // Output all comdats.
2157 if (!Comdats.empty())
2159 for (const Comdat *C : Comdats) {
2161 if (C != Comdats.back())
2165 // Output all globals.
2166 if (!M->global_empty()) Out << '\n';
2167 for (const GlobalVariable &GV : M->globals()) {
2168 printGlobal(&GV); Out << '\n';
2171 // Output all aliases.
2172 if (!M->alias_empty()) Out << "\n";
2173 for (const GlobalAlias &GA : M->aliases())
2176 // Output global use-lists.
2177 printUseLists(nullptr);
2179 // Output all of the functions.
2180 for (const Function &F : *M)
2182 assert(UseListOrders.empty() && "All use-lists should have been consumed");
2184 // Output all attribute groups.
2185 if (!Machine.as_empty()) {
2187 writeAllAttributeGroups();
2190 // Output named metadata.
2191 if (!M->named_metadata_empty()) Out << '\n';
2193 for (const NamedMDNode &Node : M->named_metadata())
2194 printNamedMDNode(&Node);
2197 if (!Machine.mdn_empty()) {
2203 static void printMetadataIdentifier(StringRef Name,
2204 formatted_raw_ostream &Out) {
2206 Out << "<empty name> ";
2208 if (isalpha(static_cast<unsigned char>(Name[0])) || Name[0] == '-' ||
2209 Name[0] == '$' || Name[0] == '.' || Name[0] == '_')
2212 Out << '\\' << hexdigit(Name[0] >> 4) << hexdigit(Name[0] & 0x0F);
2213 for (unsigned i = 1, e = Name.size(); i != e; ++i) {
2214 unsigned char C = Name[i];
2215 if (isalnum(static_cast<unsigned char>(C)) || C == '-' || C == '$' ||
2216 C == '.' || C == '_')
2219 Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
2224 void AssemblyWriter::printNamedMDNode(const NamedMDNode *NMD) {
2226 printMetadataIdentifier(NMD->getName(), Out);
2228 for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
2231 int Slot = Machine.getMetadataSlot(NMD->getOperand(i));
2240 static void PrintLinkage(GlobalValue::LinkageTypes LT,
2241 formatted_raw_ostream &Out) {
2243 case GlobalValue::ExternalLinkage: break;
2244 case GlobalValue::PrivateLinkage: Out << "private "; break;
2245 case GlobalValue::InternalLinkage: Out << "internal "; break;
2246 case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
2247 case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
2248 case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
2249 case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
2250 case GlobalValue::CommonLinkage: Out << "common "; break;
2251 case GlobalValue::AppendingLinkage: Out << "appending "; break;
2252 case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
2253 case GlobalValue::AvailableExternallyLinkage:
2254 Out << "available_externally ";
2259 static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
2260 formatted_raw_ostream &Out) {
2262 case GlobalValue::DefaultVisibility: break;
2263 case GlobalValue::HiddenVisibility: Out << "hidden "; break;
2264 case GlobalValue::ProtectedVisibility: Out << "protected "; break;
2268 static void PrintDLLStorageClass(GlobalValue::DLLStorageClassTypes SCT,
2269 formatted_raw_ostream &Out) {
2271 case GlobalValue::DefaultStorageClass: break;
2272 case GlobalValue::DLLImportStorageClass: Out << "dllimport "; break;
2273 case GlobalValue::DLLExportStorageClass: Out << "dllexport "; break;
2277 static void PrintThreadLocalModel(GlobalVariable::ThreadLocalMode TLM,
2278 formatted_raw_ostream &Out) {
2280 case GlobalVariable::NotThreadLocal:
2282 case GlobalVariable::GeneralDynamicTLSModel:
2283 Out << "thread_local ";
2285 case GlobalVariable::LocalDynamicTLSModel:
2286 Out << "thread_local(localdynamic) ";
2288 case GlobalVariable::InitialExecTLSModel:
2289 Out << "thread_local(initialexec) ";
2291 case GlobalVariable::LocalExecTLSModel:
2292 Out << "thread_local(localexec) ";
2297 static void maybePrintComdat(formatted_raw_ostream &Out,
2298 const GlobalObject &GO) {
2299 const Comdat *C = GO.getComdat();
2303 if (isa<GlobalVariable>(GO))
2307 if (GO.getName() == C->getName())
2311 PrintLLVMName(Out, C->getName(), ComdatPrefix);
2315 void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
2316 if (GV->isMaterializable())
2317 Out << "; Materializable\n";
2319 WriteAsOperandInternal(Out, GV, &TypePrinter, &Machine, GV->getParent());
2322 if (!GV->hasInitializer() && GV->hasExternalLinkage())
2325 PrintLinkage(GV->getLinkage(), Out);
2326 PrintVisibility(GV->getVisibility(), Out);
2327 PrintDLLStorageClass(GV->getDLLStorageClass(), Out);
2328 PrintThreadLocalModel(GV->getThreadLocalMode(), Out);
2329 if (GV->hasUnnamedAddr())
2330 Out << "unnamed_addr ";
2332 if (unsigned AddressSpace = GV->getType()->getAddressSpace())
2333 Out << "addrspace(" << AddressSpace << ") ";
2334 if (GV->isExternallyInitialized()) Out << "externally_initialized ";
2335 Out << (GV->isConstant() ? "constant " : "global ");
2336 TypePrinter.print(GV->getType()->getElementType(), Out);
2338 if (GV->hasInitializer()) {
2340 writeOperand(GV->getInitializer(), false);
2343 if (GV->hasSection()) {
2344 Out << ", section \"";
2345 PrintEscapedString(GV->getSection(), Out);
2348 maybePrintComdat(Out, *GV);
2349 if (GV->getAlignment())
2350 Out << ", align " << GV->getAlignment();
2352 printInfoComment(*GV);
2355 void AssemblyWriter::printAlias(const GlobalAlias *GA) {
2356 if (GA->isMaterializable())
2357 Out << "; Materializable\n";
2359 // Don't crash when dumping partially built GA
2361 Out << "<<nameless>> = ";
2363 PrintLLVMName(Out, GA);
2366 PrintLinkage(GA->getLinkage(), Out);
2367 PrintVisibility(GA->getVisibility(), Out);
2368 PrintDLLStorageClass(GA->getDLLStorageClass(), Out);
2369 PrintThreadLocalModel(GA->getThreadLocalMode(), Out);
2370 if (GA->hasUnnamedAddr())
2371 Out << "unnamed_addr ";
2375 const Constant *Aliasee = GA->getAliasee();
2378 TypePrinter.print(GA->getType(), Out);
2379 Out << " <<NULL ALIASEE>>";
2381 writeOperand(Aliasee, !isa<ConstantExpr>(Aliasee));
2384 printInfoComment(*GA);
2388 void AssemblyWriter::printComdat(const Comdat *C) {
2392 void AssemblyWriter::printTypeIdentities() {
2393 if (TypePrinter.NumberedTypes.empty() &&
2394 TypePrinter.NamedTypes.empty())
2399 // We know all the numbers that each type is used and we know that it is a
2400 // dense assignment. Convert the map to an index table.
2401 std::vector<StructType*> NumberedTypes(TypePrinter.NumberedTypes.size());
2402 for (DenseMap<StructType*, unsigned>::iterator I =
2403 TypePrinter.NumberedTypes.begin(), E = TypePrinter.NumberedTypes.end();
2405 assert(I->second < NumberedTypes.size() && "Didn't get a dense numbering?");
2406 NumberedTypes[I->second] = I->first;
2409 // Emit all numbered types.
2410 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i) {
2411 Out << '%' << i << " = type ";
2413 // Make sure we print out at least one level of the type structure, so
2414 // that we do not get %2 = type %2
2415 TypePrinter.printStructBody(NumberedTypes[i], Out);
2419 for (unsigned i = 0, e = TypePrinter.NamedTypes.size(); i != e; ++i) {
2420 PrintLLVMName(Out, TypePrinter.NamedTypes[i]->getName(), LocalPrefix);
2423 // Make sure we print out at least one level of the type structure, so
2424 // that we do not get %FILE = type %FILE
2425 TypePrinter.printStructBody(TypePrinter.NamedTypes[i], Out);
2430 /// printFunction - Print all aspects of a function.
2432 void AssemblyWriter::printFunction(const Function *F) {
2433 // Print out the return type and name.
2436 if (AnnotationWriter) AnnotationWriter->emitFunctionAnnot(F, Out);
2438 if (F->isMaterializable())
2439 Out << "; Materializable\n";
2441 const AttributeSet &Attrs = F->getAttributes();
2442 if (Attrs.hasAttributes(AttributeSet::FunctionIndex)) {
2443 AttributeSet AS = Attrs.getFnAttributes();
2444 std::string AttrStr;
2447 for (unsigned E = AS.getNumSlots(); Idx != E; ++Idx)
2448 if (AS.getSlotIndex(Idx) == AttributeSet::FunctionIndex)
2451 for (AttributeSet::iterator I = AS.begin(Idx), E = AS.end(Idx);
2453 Attribute Attr = *I;
2454 if (!Attr.isStringAttribute()) {
2455 if (!AttrStr.empty()) AttrStr += ' ';
2456 AttrStr += Attr.getAsString();
2460 if (!AttrStr.empty())
2461 Out << "; Function Attrs: " << AttrStr << '\n';
2464 if (F->isDeclaration())
2469 PrintLinkage(F->getLinkage(), Out);
2470 PrintVisibility(F->getVisibility(), Out);
2471 PrintDLLStorageClass(F->getDLLStorageClass(), Out);
2473 // Print the calling convention.
2474 if (F->getCallingConv() != CallingConv::C) {
2475 PrintCallingConv(F->getCallingConv(), Out);
2479 FunctionType *FT = F->getFunctionType();
2480 if (Attrs.hasAttributes(AttributeSet::ReturnIndex))
2481 Out << Attrs.getAsString(AttributeSet::ReturnIndex) << ' ';
2482 TypePrinter.print(F->getReturnType(), Out);
2484 WriteAsOperandInternal(Out, F, &TypePrinter, &Machine, F->getParent());
2486 Machine.incorporateFunction(F);
2488 // Loop over the arguments, printing them...
2491 if (!F->isDeclaration()) {
2492 // If this isn't a declaration, print the argument names as well.
2493 for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end();
2495 // Insert commas as we go... the first arg doesn't get a comma
2496 if (I != F->arg_begin()) Out << ", ";
2497 printArgument(I, Attrs, Idx);
2501 // Otherwise, print the types from the function type.
2502 for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
2503 // Insert commas as we go... the first arg doesn't get a comma
2507 TypePrinter.print(FT->getParamType(i), Out);
2509 if (Attrs.hasAttributes(i+1))
2510 Out << ' ' << Attrs.getAsString(i+1);
2514 // Finish printing arguments...
2515 if (FT->isVarArg()) {
2516 if (FT->getNumParams()) Out << ", ";
2517 Out << "..."; // Output varargs portion of signature!
2520 if (F->hasUnnamedAddr())
2521 Out << " unnamed_addr";
2522 if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
2523 Out << " #" << Machine.getAttributeGroupSlot(Attrs.getFnAttributes());
2524 if (F->hasSection()) {
2525 Out << " section \"";
2526 PrintEscapedString(F->getSection(), Out);
2529 maybePrintComdat(Out, *F);
2530 if (F->getAlignment())
2531 Out << " align " << F->getAlignment();
2533 Out << " gc \"" << F->getGC() << '"';
2534 if (F->hasPrefixData()) {
2536 writeOperand(F->getPrefixData(), true);
2538 if (F->hasPrologueData()) {
2539 Out << " prologue ";
2540 writeOperand(F->getPrologueData(), true);
2543 SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
2544 F->getAllMetadata(MDs);
2545 printMetadataAttachments(MDs, " ");
2547 if (F->isDeclaration()) {
2551 // Output all of the function's basic blocks.
2552 for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
2555 // Output the function's use-lists.
2561 Machine.purgeFunction();
2564 /// printArgument - This member is called for every argument that is passed into
2565 /// the function. Simply print it out
2567 void AssemblyWriter::printArgument(const Argument *Arg,
2568 AttributeSet Attrs, unsigned Idx) {
2570 TypePrinter.print(Arg->getType(), Out);
2572 // Output parameter attributes list
2573 if (Attrs.hasAttributes(Idx))
2574 Out << ' ' << Attrs.getAsString(Idx);
2576 // Output name, if available...
2577 if (Arg->hasName()) {
2579 PrintLLVMName(Out, Arg);
2583 /// printBasicBlock - This member is called for each basic block in a method.
2585 void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
2586 if (BB->hasName()) { // Print out the label if it exists...
2588 PrintLLVMName(Out, BB->getName(), LabelPrefix);
2590 } else if (!BB->use_empty()) { // Don't print block # of no uses...
2591 Out << "\n; <label>:";
2592 int Slot = Machine.getLocalSlot(BB);
2599 if (!BB->getParent()) {
2600 Out.PadToColumn(50);
2601 Out << "; Error: Block without parent!";
2602 } else if (BB != &BB->getParent()->getEntryBlock()) { // Not the entry block?
2603 // Output predecessors for the block.
2604 Out.PadToColumn(50);
2606 const_pred_iterator PI = pred_begin(BB), PE = pred_end(BB);
2609 Out << " No predecessors!";
2612 writeOperand(*PI, false);
2613 for (++PI; PI != PE; ++PI) {
2615 writeOperand(*PI, false);
2622 if (AnnotationWriter) AnnotationWriter->emitBasicBlockStartAnnot(BB, Out);
2624 // Output all of the instructions in the basic block...
2625 for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
2626 printInstructionLine(*I);
2629 if (AnnotationWriter) AnnotationWriter->emitBasicBlockEndAnnot(BB, Out);
2632 /// printInstructionLine - Print an instruction and a newline character.
2633 void AssemblyWriter::printInstructionLine(const Instruction &I) {
2634 printInstruction(I);
2638 /// printGCRelocateComment - print comment after call to the gc.relocate
2639 /// intrinsic indicating base and derived pointer names.
2640 void AssemblyWriter::printGCRelocateComment(const Value &V) {
2641 assert(isGCRelocate(&V));
2642 GCRelocateOperands GCOps(cast<Instruction>(&V));
2645 writeOperand(GCOps.getBasePtr(), false);
2647 writeOperand(GCOps.getDerivedPtr(), false);
2651 /// printInfoComment - Print a little comment after the instruction indicating
2652 /// which slot it occupies.
2654 void AssemblyWriter::printInfoComment(const Value &V) {
2655 if (isGCRelocate(&V))
2656 printGCRelocateComment(V);
2658 if (AnnotationWriter)
2659 AnnotationWriter->printInfoComment(V, Out);
2662 // This member is called for each Instruction in a function..
2663 void AssemblyWriter::printInstruction(const Instruction &I) {
2664 if (AnnotationWriter) AnnotationWriter->emitInstructionAnnot(&I, Out);
2666 // Print out indentation for an instruction.
2669 // Print out name if it exists...
2671 PrintLLVMName(Out, &I);
2673 } else if (!I.getType()->isVoidTy()) {
2674 // Print out the def slot taken.
2675 int SlotNum = Machine.getLocalSlot(&I);
2677 Out << "<badref> = ";
2679 Out << '%' << SlotNum << " = ";
2682 if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
2683 if (CI->isMustTailCall())
2685 else if (CI->isTailCall())
2689 // Print out the opcode...
2690 Out << I.getOpcodeName();
2692 // If this is an atomic load or store, print out the atomic marker.
2693 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isAtomic()) ||
2694 (isa<StoreInst>(I) && cast<StoreInst>(I).isAtomic()))
2697 if (isa<AtomicCmpXchgInst>(I) && cast<AtomicCmpXchgInst>(I).isWeak())
2700 // If this is a volatile operation, print out the volatile marker.
2701 if ((isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) ||
2702 (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile()) ||
2703 (isa<AtomicCmpXchgInst>(I) && cast<AtomicCmpXchgInst>(I).isVolatile()) ||
2704 (isa<AtomicRMWInst>(I) && cast<AtomicRMWInst>(I).isVolatile()))
2707 // Print out optimization information.
2708 WriteOptimizationInfo(Out, &I);
2710 // Print out the compare instruction predicates
2711 if (const CmpInst *CI = dyn_cast<CmpInst>(&I))
2712 Out << ' ' << getPredicateText(CI->getPredicate());
2714 // Print out the atomicrmw operation
2715 if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(&I))
2716 writeAtomicRMWOperation(Out, RMWI->getOperation());
2718 // Print out the type of the operands...
2719 const Value *Operand = I.getNumOperands() ? I.getOperand(0) : nullptr;
2721 // Special case conditional branches to swizzle the condition out to the front
2722 if (isa<BranchInst>(I) && cast<BranchInst>(I).isConditional()) {
2723 const BranchInst &BI(cast<BranchInst>(I));
2725 writeOperand(BI.getCondition(), true);
2727 writeOperand(BI.getSuccessor(0), true);
2729 writeOperand(BI.getSuccessor(1), true);
2731 } else if (isa<SwitchInst>(I)) {
2732 const SwitchInst& SI(cast<SwitchInst>(I));
2733 // Special case switch instruction to get formatting nice and correct.
2735 writeOperand(SI.getCondition(), true);
2737 writeOperand(SI.getDefaultDest(), true);
2739 for (SwitchInst::ConstCaseIt i = SI.case_begin(), e = SI.case_end();
2742 writeOperand(i.getCaseValue(), true);
2744 writeOperand(i.getCaseSuccessor(), true);
2747 } else if (isa<IndirectBrInst>(I)) {
2748 // Special case indirectbr instruction to get formatting nice and correct.
2750 writeOperand(Operand, true);
2753 for (unsigned i = 1, e = I.getNumOperands(); i != e; ++i) {
2756 writeOperand(I.getOperand(i), true);
2759 } else if (const PHINode *PN = dyn_cast<PHINode>(&I)) {
2761 TypePrinter.print(I.getType(), Out);
2764 for (unsigned op = 0, Eop = PN->getNumIncomingValues(); op < Eop; ++op) {
2765 if (op) Out << ", ";
2767 writeOperand(PN->getIncomingValue(op), false); Out << ", ";
2768 writeOperand(PN->getIncomingBlock(op), false); Out << " ]";
2770 } else if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(&I)) {
2772 writeOperand(I.getOperand(0), true);
2773 for (const unsigned *i = EVI->idx_begin(), *e = EVI->idx_end(); i != e; ++i)
2775 } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(&I)) {
2777 writeOperand(I.getOperand(0), true); Out << ", ";
2778 writeOperand(I.getOperand(1), true);
2779 for (const unsigned *i = IVI->idx_begin(), *e = IVI->idx_end(); i != e; ++i)
2781 } else if (const LandingPadInst *LPI = dyn_cast<LandingPadInst>(&I)) {
2783 TypePrinter.print(I.getType(), Out);
2784 Out << " personality ";
2785 writeOperand(I.getOperand(0), true); Out << '\n';
2787 if (LPI->isCleanup())
2790 for (unsigned i = 0, e = LPI->getNumClauses(); i != e; ++i) {
2791 if (i != 0 || LPI->isCleanup()) Out << "\n";
2792 if (LPI->isCatch(i))
2797 writeOperand(LPI->getClause(i), true);
2799 } else if (isa<ReturnInst>(I) && !Operand) {
2801 } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
2802 // Print the calling convention being used.
2803 if (CI->getCallingConv() != CallingConv::C) {
2805 PrintCallingConv(CI->getCallingConv(), Out);
2808 Operand = CI->getCalledValue();
2809 FunctionType *FTy = cast<FunctionType>(CI->getFunctionType());
2810 Type *RetTy = FTy->getReturnType();
2811 const AttributeSet &PAL = CI->getAttributes();
2813 if (PAL.hasAttributes(AttributeSet::ReturnIndex))
2814 Out << ' ' << PAL.getAsString(AttributeSet::ReturnIndex);
2816 // If possible, print out the short form of the call instruction. We can
2817 // only do this if the first argument is a pointer to a nonvararg function,
2818 // and if the return type is not a pointer to a function.
2821 TypePrinter.print(FTy->isVarArg() ? FTy : RetTy, Out);
2823 writeOperand(Operand, false);
2825 for (unsigned op = 0, Eop = CI->getNumArgOperands(); op < Eop; ++op) {
2828 writeParamOperand(CI->getArgOperand(op), PAL, op + 1);
2831 // Emit an ellipsis if this is a musttail call in a vararg function. This
2832 // is only to aid readability, musttail calls forward varargs by default.
2833 if (CI->isMustTailCall() && CI->getParent() &&
2834 CI->getParent()->getParent() &&
2835 CI->getParent()->getParent()->isVarArg())
2839 if (PAL.hasAttributes(AttributeSet::FunctionIndex))
2840 Out << " #" << Machine.getAttributeGroupSlot(PAL.getFnAttributes());
2841 } else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
2842 Operand = II->getCalledValue();
2843 FunctionType *FTy = cast<FunctionType>(II->getFunctionType());
2844 Type *RetTy = FTy->getReturnType();
2845 const AttributeSet &PAL = II->getAttributes();
2847 // Print the calling convention being used.
2848 if (II->getCallingConv() != CallingConv::C) {
2850 PrintCallingConv(II->getCallingConv(), Out);
2853 if (PAL.hasAttributes(AttributeSet::ReturnIndex))
2854 Out << ' ' << PAL.getAsString(AttributeSet::ReturnIndex);
2856 // If possible, print out the short form of the invoke instruction. We can
2857 // only do this if the first argument is a pointer to a nonvararg function,
2858 // and if the return type is not a pointer to a function.
2861 TypePrinter.print(FTy->isVarArg() ? FTy : RetTy, Out);
2863 writeOperand(Operand, false);
2865 for (unsigned op = 0, Eop = II->getNumArgOperands(); op < Eop; ++op) {
2868 writeParamOperand(II->getArgOperand(op), PAL, op + 1);
2872 if (PAL.hasAttributes(AttributeSet::FunctionIndex))
2873 Out << " #" << Machine.getAttributeGroupSlot(PAL.getFnAttributes());
2876 writeOperand(II->getNormalDest(), true);
2878 writeOperand(II->getUnwindDest(), true);
2880 } else if (const AllocaInst *AI = dyn_cast<AllocaInst>(&I)) {
2882 if (AI->isUsedWithInAlloca())
2884 TypePrinter.print(AI->getAllocatedType(), Out);
2886 // Explicitly write the array size if the code is broken, if it's an array
2887 // allocation, or if the type is not canonical for scalar allocations. The
2888 // latter case prevents the type from mutating when round-tripping through
2890 if (!AI->getArraySize() || AI->isArrayAllocation() ||
2891 !AI->getArraySize()->getType()->isIntegerTy(32)) {
2893 writeOperand(AI->getArraySize(), true);
2895 if (AI->getAlignment()) {
2896 Out << ", align " << AI->getAlignment();
2898 } else if (isa<CastInst>(I)) {
2901 writeOperand(Operand, true); // Work with broken code
2904 TypePrinter.print(I.getType(), Out);
2905 } else if (isa<VAArgInst>(I)) {
2908 writeOperand(Operand, true); // Work with broken code
2911 TypePrinter.print(I.getType(), Out);
2912 } else if (Operand) { // Print the normal way.
2913 if (const auto *GEP = dyn_cast<GetElementPtrInst>(&I)) {
2915 TypePrinter.print(GEP->getSourceElementType(), Out);
2917 } else if (const auto *LI = dyn_cast<LoadInst>(&I)) {
2919 TypePrinter.print(LI->getType(), Out);
2923 // PrintAllTypes - Instructions who have operands of all the same type
2924 // omit the type from all but the first operand. If the instruction has
2925 // different type operands (for example br), then they are all printed.
2926 bool PrintAllTypes = false;
2927 Type *TheType = Operand->getType();
2929 // Select, Store and ShuffleVector always print all types.
2930 if (isa<SelectInst>(I) || isa<StoreInst>(I) || isa<ShuffleVectorInst>(I)
2931 || isa<ReturnInst>(I)) {
2932 PrintAllTypes = true;
2934 for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
2935 Operand = I.getOperand(i);
2936 // note that Operand shouldn't be null, but the test helps make dump()
2937 // more tolerant of malformed IR
2938 if (Operand && Operand->getType() != TheType) {
2939 PrintAllTypes = true; // We have differing types! Print them all!
2945 if (!PrintAllTypes) {
2947 TypePrinter.print(TheType, Out);
2951 for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
2953 writeOperand(I.getOperand(i), PrintAllTypes);
2957 // Print atomic ordering/alignment for memory operations
2958 if (const LoadInst *LI = dyn_cast<LoadInst>(&I)) {
2960 writeAtomic(LI->getOrdering(), LI->getSynchScope());
2961 if (LI->getAlignment())
2962 Out << ", align " << LI->getAlignment();
2963 } else if (const StoreInst *SI = dyn_cast<StoreInst>(&I)) {
2965 writeAtomic(SI->getOrdering(), SI->getSynchScope());
2966 if (SI->getAlignment())
2967 Out << ", align " << SI->getAlignment();
2968 } else if (const AtomicCmpXchgInst *CXI = dyn_cast<AtomicCmpXchgInst>(&I)) {
2969 writeAtomicCmpXchg(CXI->getSuccessOrdering(), CXI->getFailureOrdering(),
2970 CXI->getSynchScope());
2971 } else if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(&I)) {
2972 writeAtomic(RMWI->getOrdering(), RMWI->getSynchScope());
2973 } else if (const FenceInst *FI = dyn_cast<FenceInst>(&I)) {
2974 writeAtomic(FI->getOrdering(), FI->getSynchScope());
2977 // Print Metadata info.
2978 SmallVector<std::pair<unsigned, MDNode *>, 4> InstMD;
2979 I.getAllMetadata(InstMD);
2980 printMetadataAttachments(InstMD, ", ");
2982 // Print a nice comment.
2983 printInfoComment(I);
2986 void AssemblyWriter::printMetadataAttachments(
2987 const SmallVectorImpl<std::pair<unsigned, MDNode *>> &MDs,
2988 StringRef Separator) {
2992 if (MDNames.empty())
2993 TheModule->getMDKindNames(MDNames);
2995 for (const auto &I : MDs) {
2996 unsigned Kind = I.first;
2998 if (Kind < MDNames.size()) {
3000 printMetadataIdentifier(MDNames[Kind], Out);
3002 Out << "!<unknown kind #" << Kind << ">";
3004 WriteAsOperandInternal(Out, I.second, &TypePrinter, &Machine, TheModule);
3008 void AssemblyWriter::writeMDNode(unsigned Slot, const MDNode *Node) {
3009 Out << '!' << Slot << " = ";
3010 printMDNodeBody(Node);
3014 void AssemblyWriter::writeAllMDNodes() {
3015 SmallVector<const MDNode *, 16> Nodes;
3016 Nodes.resize(Machine.mdn_size());
3017 for (SlotTracker::mdn_iterator I = Machine.mdn_begin(), E = Machine.mdn_end();
3019 Nodes[I->second] = cast<MDNode>(I->first);
3021 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
3022 writeMDNode(i, Nodes[i]);
3026 void AssemblyWriter::printMDNodeBody(const MDNode *Node) {
3027 WriteMDNodeBodyInternal(Out, Node, &TypePrinter, &Machine, TheModule);
3030 void AssemblyWriter::writeAllAttributeGroups() {
3031 std::vector<std::pair<AttributeSet, unsigned> > asVec;
3032 asVec.resize(Machine.as_size());
3034 for (SlotTracker::as_iterator I = Machine.as_begin(), E = Machine.as_end();
3036 asVec[I->second] = *I;
3038 for (std::vector<std::pair<AttributeSet, unsigned> >::iterator
3039 I = asVec.begin(), E = asVec.end(); I != E; ++I)
3040 Out << "attributes #" << I->second << " = { "
3041 << I->first.getAsString(AttributeSet::FunctionIndex, true) << " }\n";
3044 void AssemblyWriter::printUseListOrder(const UseListOrder &Order) {
3045 bool IsInFunction = Machine.getFunction();
3049 Out << "uselistorder";
3050 if (const BasicBlock *BB =
3051 IsInFunction ? nullptr : dyn_cast<BasicBlock>(Order.V)) {
3053 writeOperand(BB->getParent(), false);
3055 writeOperand(BB, false);
3058 writeOperand(Order.V, true);
3062 assert(Order.Shuffle.size() >= 2 && "Shuffle too small");
3063 Out << Order.Shuffle[0];
3064 for (unsigned I = 1, E = Order.Shuffle.size(); I != E; ++I)
3065 Out << ", " << Order.Shuffle[I];
3069 void AssemblyWriter::printUseLists(const Function *F) {
3071 [&]() { return !UseListOrders.empty() && UseListOrders.back().F == F; };
3076 Out << "\n; uselistorder directives\n";
3078 printUseListOrder(UseListOrders.back());
3079 UseListOrders.pop_back();
3083 //===----------------------------------------------------------------------===//
3084 // External Interface declarations
3085 //===----------------------------------------------------------------------===//
3087 void Function::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW) const {
3088 SlotTracker SlotTable(this->getParent());
3089 formatted_raw_ostream OS(ROS);
3090 AssemblyWriter W(OS, SlotTable, this->getParent(), AAW);
3091 W.printFunction(this);
3094 void Module::print(raw_ostream &ROS, AssemblyAnnotationWriter *AAW,
3095 bool ShouldPreserveUseListOrder) const {
3096 SlotTracker SlotTable(this);
3097 formatted_raw_ostream OS(ROS);
3098 AssemblyWriter W(OS, SlotTable, this, AAW, ShouldPreserveUseListOrder);
3099 W.printModule(this);
3102 void NamedMDNode::print(raw_ostream &ROS) const {
3103 SlotTracker SlotTable(getParent());
3104 formatted_raw_ostream OS(ROS);
3105 AssemblyWriter W(OS, SlotTable, getParent(), nullptr);
3106 W.printNamedMDNode(this);
3109 void Comdat::print(raw_ostream &ROS) const {
3110 PrintLLVMName(ROS, getName(), ComdatPrefix);
3111 ROS << " = comdat ";
3113 switch (getSelectionKind()) {
3117 case Comdat::ExactMatch:
3118 ROS << "exactmatch";
3120 case Comdat::Largest:
3123 case Comdat::NoDuplicates:
3124 ROS << "noduplicates";
3126 case Comdat::SameSize:
3134 void Type::print(raw_ostream &OS) const {
3136 TP.print(const_cast<Type*>(this), OS);
3138 // If the type is a named struct type, print the body as well.
3139 if (StructType *STy = dyn_cast<StructType>(const_cast<Type*>(this)))
3140 if (!STy->isLiteral()) {
3142 TP.printStructBody(STy, OS);
3146 static bool isReferencingMDNode(const Instruction &I) {
3147 if (const auto *CI = dyn_cast<CallInst>(&I))
3148 if (Function *F = CI->getCalledFunction())
3149 if (F->isIntrinsic())
3150 for (auto &Op : I.operands())
3151 if (auto *V = dyn_cast_or_null<MetadataAsValue>(Op))
3152 if (isa<MDNode>(V->getMetadata()))
3157 void Value::print(raw_ostream &ROS) const {
3158 formatted_raw_ostream OS(ROS);
3159 if (const Instruction *I = dyn_cast<Instruction>(this)) {
3160 const Function *F = I->getParent() ? I->getParent()->getParent() : nullptr;
3161 SlotTracker SlotTable(
3163 /* ShouldInitializeAllMetadata */ isReferencingMDNode(*I));
3164 AssemblyWriter W(OS, SlotTable, getModuleFromVal(I), nullptr);
3165 W.printInstruction(*I);
3166 } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(this)) {
3167 SlotTracker SlotTable(BB->getParent());
3168 AssemblyWriter W(OS, SlotTable, getModuleFromVal(BB), nullptr);
3169 W.printBasicBlock(BB);
3170 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) {
3171 SlotTracker SlotTable(GV->getParent(),
3172 /* ShouldInitializeAllMetadata */ isa<Function>(GV));
3173 AssemblyWriter W(OS, SlotTable, GV->getParent(), nullptr);
3174 if (const GlobalVariable *V = dyn_cast<GlobalVariable>(GV))
3176 else if (const Function *F = dyn_cast<Function>(GV))
3179 W.printAlias(cast<GlobalAlias>(GV));
3180 } else if (const MetadataAsValue *V = dyn_cast<MetadataAsValue>(this)) {
3181 V->getMetadata()->print(ROS, getModuleFromVal(V));
3182 } else if (const Constant *C = dyn_cast<Constant>(this)) {
3183 TypePrinting TypePrinter;
3184 TypePrinter.print(C->getType(), OS);
3186 WriteConstantInternal(OS, C, TypePrinter, nullptr, nullptr);
3187 } else if (isa<InlineAsm>(this) || isa<Argument>(this)) {
3188 this->printAsOperand(OS);
3190 llvm_unreachable("Unknown value to print out!");
3194 void Value::printAsOperand(raw_ostream &O, bool PrintType, const Module *M) const {
3195 // Fast path: Don't construct and populate a TypePrinting object if we
3196 // won't be needing any types printed.
3197 bool IsMetadata = isa<MetadataAsValue>(this);
3198 if (!PrintType && ((!isa<Constant>(this) && !IsMetadata) || hasName() ||
3199 isa<GlobalValue>(this))) {
3200 WriteAsOperandInternal(O, this, nullptr, nullptr, M);
3205 M = getModuleFromVal(this);
3207 TypePrinting TypePrinter;
3209 TypePrinter.incorporateTypes(*M);
3211 TypePrinter.print(getType(), O);
3215 SlotTracker Machine(M, /* ShouldInitializeAllMetadata */ IsMetadata);
3216 WriteAsOperandInternal(O, this, &TypePrinter, &Machine, M);
3219 static void printMetadataImpl(raw_ostream &ROS, const Metadata &MD,
3220 const Module *M, bool OnlyAsOperand) {
3221 formatted_raw_ostream OS(ROS);
3223 auto *N = dyn_cast<MDNode>(&MD);
3224 TypePrinting TypePrinter;
3225 SlotTracker Machine(M, /* ShouldInitializeAllMetadata */ N);
3227 TypePrinter.incorporateTypes(*M);
3229 WriteAsOperandInternal(OS, &MD, &TypePrinter, &Machine, M,
3230 /* FromValue */ true);
3231 if (OnlyAsOperand || !N)
3235 WriteMDNodeBodyInternal(OS, N, &TypePrinter, &Machine, M);
3238 void Metadata::printAsOperand(raw_ostream &OS, const Module *M) const {
3239 printMetadataImpl(OS, *this, M, /* OnlyAsOperand */ true);
3242 void Metadata::print(raw_ostream &OS, const Module *M) const {
3243 printMetadataImpl(OS, *this, M, /* OnlyAsOperand */ false);
3246 // Value::dump - allow easy printing of Values from the debugger.
3248 void Value::dump() const { print(dbgs()); dbgs() << '\n'; }
3250 // Type::dump - allow easy printing of Types from the debugger.
3252 void Type::dump() const { print(dbgs()); dbgs() << '\n'; }
3254 // Module::dump() - Allow printing of Modules from the debugger.
3256 void Module::dump() const { print(dbgs(), nullptr); }
3258 // \brief Allow printing of Comdats from the debugger.
3260 void Comdat::dump() const { print(dbgs()); }
3262 // NamedMDNode::dump() - Allow printing of NamedMDNodes from the debugger.
3264 void NamedMDNode::dump() const { print(dbgs()); }
3267 void Metadata::dump() const { dump(nullptr); }
3270 void Metadata::dump(const Module *M) const {