1 //===-- AsmPrinter.cpp - Common AsmPrinter code ---------------------------===//
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 file implements the AsmPrinter class.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/CodeGen/AsmPrinter.h"
15 #include "llvm/Assembly/Writer.h"
16 #include "llvm/DerivedTypes.h"
17 #include "llvm/Constants.h"
18 #include "llvm/Module.h"
19 #include "llvm/CodeGen/GCMetadataPrinter.h"
20 #include "llvm/CodeGen/MachineConstantPool.h"
21 #include "llvm/CodeGen/MachineFunction.h"
22 #include "llvm/CodeGen/MachineJumpTableInfo.h"
23 #include "llvm/CodeGen/MachineLoopInfo.h"
24 #include "llvm/CodeGen/MachineModuleInfo.h"
25 #include "llvm/CodeGen/DwarfWriter.h"
26 #include "llvm/Analysis/DebugInfo.h"
27 #include "llvm/MC/MCContext.h"
28 #include "llvm/MC/MCInst.h"
29 #include "llvm/MC/MCSection.h"
30 #include "llvm/MC/MCStreamer.h"
31 #include "llvm/Support/CommandLine.h"
32 #include "llvm/Support/ErrorHandling.h"
33 #include "llvm/Support/FormattedStream.h"
34 #include "llvm/Support/Mangler.h"
35 #include "llvm/MC/MCAsmInfo.h"
36 #include "llvm/Target/TargetData.h"
37 #include "llvm/Target/TargetLowering.h"
38 #include "llvm/Target/TargetLoweringObjectFile.h"
39 #include "llvm/Target/TargetOptions.h"
40 #include "llvm/Target/TargetRegisterInfo.h"
41 #include "llvm/ADT/SmallPtrSet.h"
42 #include "llvm/ADT/SmallString.h"
43 #include "llvm/ADT/StringExtras.h"
47 static cl::opt<cl::boolOrDefault>
48 AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
49 cl::init(cl::BOU_UNSET));
51 char AsmPrinter::ID = 0;
52 AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
53 const MCAsmInfo *T, bool VDef)
54 : MachineFunctionPass(&ID), FunctionNumber(0), O(o),
55 TM(tm), MAI(T), TRI(tm.getRegisterInfo()),
57 OutContext(*new MCContext()),
58 OutStreamer(*createAsmStreamer(OutContext, O, *T, this)),
60 LastMI(0), LastFn(0), Counter(~0U),
61 PrevDLT(0, ~0U, ~0U) {
64 case cl::BOU_UNSET: VerboseAsm = VDef; break;
65 case cl::BOU_TRUE: VerboseAsm = true; break;
66 case cl::BOU_FALSE: VerboseAsm = false; break;
70 AsmPrinter::~AsmPrinter() {
71 for (gcp_iterator I = GCMetadataPrinters.begin(),
72 E = GCMetadataPrinters.end(); I != E; ++I)
79 TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
80 return TM.getTargetLowering()->getObjFileLowering();
83 /// getCurrentSection() - Return the current section we are emitting to.
84 const MCSection *AsmPrinter::getCurrentSection() const {
85 return OutStreamer.getCurrentSection();
89 void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
91 MachineFunctionPass::getAnalysisUsage(AU);
92 AU.addRequired<GCModuleInfo>();
94 AU.addRequired<MachineLoopInfo>();
97 bool AsmPrinter::doInitialization(Module &M) {
98 // Initialize TargetLoweringObjectFile.
99 const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
100 .Initialize(OutContext, TM);
102 Mang = new Mangler(M, MAI->getGlobalPrefix(), MAI->getPrivateGlobalPrefix(),
103 MAI->getLinkerPrivateGlobalPrefix());
105 if (MAI->doesAllowQuotesInName())
106 Mang->setUseQuotes(true);
108 GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
109 assert(MI && "AsmPrinter didn't require GCModuleInfo?");
111 if (MAI->hasSingleParameterDotFile()) {
112 /* Very minimal debug info. It is ignored if we emit actual
113 debug info. If we don't, this at helps the user find where
114 a function came from. */
115 O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n";
118 for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I)
119 if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
120 MP->beginAssembly(O, *this, *MAI);
122 if (!M.getModuleInlineAsm().empty())
123 O << MAI->getCommentString() << " Start of file scope inline assembly\n"
124 << M.getModuleInlineAsm()
125 << '\n' << MAI->getCommentString()
126 << " End of file scope inline assembly\n";
128 if (MAI->doesSupportDebugInformation() ||
129 MAI->doesSupportExceptionHandling()) {
130 MMI = getAnalysisIfAvailable<MachineModuleInfo>();
132 MMI->AnalyzeModule(M);
133 DW = getAnalysisIfAvailable<DwarfWriter>();
135 DW->BeginModule(&M, MMI, O, this, MAI);
141 bool AsmPrinter::doFinalization(Module &M) {
142 // Emit global variables.
143 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
145 PrintGlobalVariable(I);
147 // Emit final debug information.
148 if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
151 // If the target wants to know about weak references, print them all.
152 if (MAI->getWeakRefDirective()) {
153 // FIXME: This is not lazy, it would be nice to only print weak references
154 // to stuff that is actually used. Note that doing so would require targets
155 // to notice uses in operands (due to constant exprs etc). This should
156 // happen with the MC stuff eventually.
158 // Print out module-level global variables here.
159 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
161 if (I->hasExternalWeakLinkage())
162 O << MAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
165 for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
166 if (I->hasExternalWeakLinkage())
167 O << MAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
171 if (MAI->getSetDirective()) {
173 for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
175 std::string Name = Mang->getMangledName(I);
177 const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
178 std::string Target = Mang->getMangledName(GV);
180 if (I->hasExternalLinkage() || !MAI->getWeakRefDirective())
181 O << "\t.globl\t" << Name << '\n';
182 else if (I->hasWeakLinkage())
183 O << MAI->getWeakRefDirective() << Name << '\n';
184 else if (!I->hasLocalLinkage())
185 llvm_unreachable("Invalid alias linkage");
187 printVisibility(Name, I->getVisibility());
189 O << MAI->getSetDirective() << ' ' << Name << ", " << Target << '\n';
193 GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
194 assert(MI && "AsmPrinter didn't require GCModuleInfo?");
195 for (GCModuleInfo::iterator I = MI->end(), E = MI->begin(); I != E; )
196 if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*--I))
197 MP->finishAssembly(O, *this, *MAI);
199 // If we don't have any trampolines, then we don't require stack memory
200 // to be executable. Some targets have a directive to declare this.
201 Function *InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline");
202 if (!InitTrampolineIntrinsic || InitTrampolineIntrinsic->use_empty())
203 if (MAI->getNonexecutableStackDirective())
204 O << MAI->getNonexecutableStackDirective() << '\n';
206 delete Mang; Mang = 0;
209 OutStreamer.Finish();
214 AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) const {
215 assert(MF && "No machine function?");
216 return Mang->getMangledName(MF->getFunction(), ".eh",
217 MAI->is_EHSymbolPrivate());
220 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
221 // What's my mangled name?
222 CurrentFnName = Mang->getMangledName(MF.getFunction());
223 IncrementFunctionNumber();
226 LI = &getAnalysis<MachineLoopInfo>();
231 // SectionCPs - Keep track the alignment, constpool entries per Section.
235 SmallVector<unsigned, 4> CPEs;
236 SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {};
240 /// EmitConstantPool - Print to the current output stream assembly
241 /// representations of the constants in the constant pool MCP. This is
242 /// used to print out constants which have been "spilled to memory" by
243 /// the code generator.
245 void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
246 const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
247 if (CP.empty()) return;
249 // Calculate sections for constant pool entries. We collect entries to go into
250 // the same section together to reduce amount of section switch statements.
251 SmallVector<SectionCPs, 4> CPSections;
252 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
253 const MachineConstantPoolEntry &CPE = CP[i];
254 unsigned Align = CPE.getAlignment();
257 switch (CPE.getRelocationInfo()) {
258 default: llvm_unreachable("Unknown section kind");
259 case 2: Kind = SectionKind::getReadOnlyWithRel(); break;
261 Kind = SectionKind::getReadOnlyWithRelLocal();
264 switch (TM.getTargetData()->getTypeAllocSize(CPE.getType())) {
265 case 4: Kind = SectionKind::getMergeableConst4(); break;
266 case 8: Kind = SectionKind::getMergeableConst8(); break;
267 case 16: Kind = SectionKind::getMergeableConst16();break;
268 default: Kind = SectionKind::getMergeableConst(); break;
272 const MCSection *S = getObjFileLowering().getSectionForConstant(Kind);
274 // The number of sections are small, just do a linear search from the
275 // last section to the first.
277 unsigned SecIdx = CPSections.size();
278 while (SecIdx != 0) {
279 if (CPSections[--SecIdx].S == S) {
285 SecIdx = CPSections.size();
286 CPSections.push_back(SectionCPs(S, Align));
289 if (Align > CPSections[SecIdx].Alignment)
290 CPSections[SecIdx].Alignment = Align;
291 CPSections[SecIdx].CPEs.push_back(i);
294 // Now print stuff into the calculated sections.
295 for (unsigned i = 0, e = CPSections.size(); i != e; ++i) {
296 OutStreamer.SwitchSection(CPSections[i].S);
297 EmitAlignment(Log2_32(CPSections[i].Alignment));
300 for (unsigned j = 0, ee = CPSections[i].CPEs.size(); j != ee; ++j) {
301 unsigned CPI = CPSections[i].CPEs[j];
302 MachineConstantPoolEntry CPE = CP[CPI];
304 // Emit inter-object padding for alignment.
305 unsigned AlignMask = CPE.getAlignment() - 1;
306 unsigned NewOffset = (Offset + AlignMask) & ~AlignMask;
307 EmitZeros(NewOffset - Offset);
309 const Type *Ty = CPE.getType();
310 Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty);
312 O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
315 O.PadToColumn(MAI->getCommentColumn());
316 O << MAI->getCommentString() << " constant ";
317 WriteTypeSymbolic(O, CPE.getType(), MF->getFunction()->getParent());
320 if (CPE.isMachineConstantPoolEntry())
321 EmitMachineConstantPoolValue(CPE.Val.MachineCPVal);
323 EmitGlobalConstant(CPE.Val.ConstVal);
328 /// EmitJumpTableInfo - Print assembly representations of the jump tables used
329 /// by the current function to the current output stream.
331 void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
332 MachineFunction &MF) {
333 const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
334 if (JT.empty()) return;
336 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
338 // Pick the directive to use to print the jump table entries, and switch to
339 // the appropriate section.
340 TargetLowering *LoweringInfo = TM.getTargetLowering();
342 const Function *F = MF.getFunction();
343 bool JTInDiffSection = false;
344 if (F->isWeakForLinker() ||
345 (IsPic && !LoweringInfo->usesGlobalOffsetTable())) {
346 // In PIC mode, we need to emit the jump table to the same section as the
347 // function body itself, otherwise the label differences won't make sense.
348 // We should also do if the section name is NULL or function is declared in
349 // discardable section.
350 OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang,
353 // Otherwise, drop it in the readonly section.
354 const MCSection *ReadOnlySection =
355 getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly());
356 OutStreamer.SwitchSection(ReadOnlySection);
357 JTInDiffSection = true;
360 EmitAlignment(Log2_32(MJTI->getAlignment()));
362 for (unsigned i = 0, e = JT.size(); i != e; ++i) {
363 const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
365 // If this jump table was deleted, ignore it.
366 if (JTBBs.empty()) continue;
368 // For PIC codegen, if possible we want to use the SetDirective to reduce
369 // the number of relocations the assembler will generate for the jump table.
370 // Set directives are all printed before the jump table itself.
371 SmallPtrSet<MachineBasicBlock*, 16> EmittedSets;
372 if (MAI->getSetDirective() && IsPic)
373 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
374 if (EmittedSets.insert(JTBBs[ii]))
375 printPICJumpTableSetLabel(i, JTBBs[ii]);
377 // On some targets (e.g. darwin) we want to emit two consequtive labels
378 // before each jump table. The first label is never referenced, but tells
379 // the assembler and linker the extents of the jump table object. The
380 // second label is actually referenced by the code.
381 if (JTInDiffSection) {
382 if (const char *JTLabelPrefix = MAI->getJumpTableSpecialLabelPrefix())
383 O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
386 O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
387 << '_' << i << ":\n";
389 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
390 printPICJumpTableEntry(MJTI, JTBBs[ii], i);
396 void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
397 const MachineBasicBlock *MBB,
398 unsigned uid) const {
399 bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
401 // Use JumpTableDirective otherwise honor the entry size from the jump table
403 const char *JTEntryDirective = MAI->getJumpTableDirective(isPIC);
404 bool HadJTEntryDirective = JTEntryDirective != NULL;
405 if (!HadJTEntryDirective) {
406 JTEntryDirective = MJTI->getEntrySize() == 4 ?
407 MAI->getData32bitsDirective() : MAI->getData64bitsDirective();
410 O << JTEntryDirective << ' ';
412 // If we have emitted set directives for the jump table entries, print
413 // them rather than the entries themselves. If we're emitting PIC, then
414 // emit the table entries as differences between two text section labels.
415 // If we're emitting non-PIC code, then emit the entries as direct
416 // references to the target basic blocks.
418 printBasicBlockLabel(MBB, false, false, false);
419 } else if (MAI->getSetDirective()) {
420 O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
421 << '_' << uid << "_set_" << MBB->getNumber();
423 printBasicBlockLabel(MBB, false, false, false);
424 // If the arch uses custom Jump Table directives, don't calc relative to
426 if (!HadJTEntryDirective)
427 O << '-' << MAI->getPrivateGlobalPrefix() << "JTI"
428 << getFunctionNumber() << '_' << uid;
433 /// EmitSpecialLLVMGlobal - Check to see if the specified global is a
434 /// special global used by LLVM. If so, emit it and return true, otherwise
435 /// do nothing and return false.
436 bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
437 if (GV->getName() == "llvm.used") {
438 if (MAI->getUsedDirective() != 0) // No need to emit this at all.
439 EmitLLVMUsedList(GV->getInitializer());
443 // Ignore debug and non-emitted data. This handles llvm.compiler.used.
444 if (GV->getSection() == "llvm.metadata" ||
445 GV->hasAvailableExternallyLinkage())
448 if (!GV->hasAppendingLinkage()) return false;
450 assert(GV->hasInitializer() && "Not a special LLVM global!");
452 const TargetData *TD = TM.getTargetData();
453 unsigned Align = Log2_32(TD->getPointerPrefAlignment());
454 if (GV->getName() == "llvm.global_ctors") {
455 OutStreamer.SwitchSection(getObjFileLowering().getStaticCtorSection());
456 EmitAlignment(Align, 0);
457 EmitXXStructorList(GV->getInitializer());
461 if (GV->getName() == "llvm.global_dtors") {
462 OutStreamer.SwitchSection(getObjFileLowering().getStaticDtorSection());
463 EmitAlignment(Align, 0);
464 EmitXXStructorList(GV->getInitializer());
471 /// EmitLLVMUsedList - For targets that define a MAI::UsedDirective, mark each
472 /// global in the specified llvm.used list for which emitUsedDirectiveFor
473 /// is true, as being used with this directive.
474 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
475 const char *Directive = MAI->getUsedDirective();
477 // Should be an array of 'i8*'.
478 ConstantArray *InitList = dyn_cast<ConstantArray>(List);
479 if (InitList == 0) return;
481 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
482 const GlobalValue *GV =
483 dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
484 if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang)) {
486 EmitConstantValueOnly(InitList->getOperand(i));
492 /// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
493 /// function pointers, ignoring the init priority.
494 void AsmPrinter::EmitXXStructorList(Constant *List) {
495 // Should be an array of '{ int, void ()* }' structs. The first value is the
496 // init priority, which we ignore.
497 if (!isa<ConstantArray>(List)) return;
498 ConstantArray *InitList = cast<ConstantArray>(List);
499 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
500 if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
501 if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
503 if (CS->getOperand(1)->isNullValue())
504 return; // Found a null terminator, exit printing.
505 // Emit the function pointer.
506 EmitGlobalConstant(CS->getOperand(1));
510 /// getGlobalLinkName - Returns the asm/link name of of the specified
511 /// global variable. Should be overridden by each target asm printer to
512 /// generate the appropriate value.
513 const std::string &AsmPrinter::getGlobalLinkName(const GlobalVariable *GV,
514 std::string &LinkName) const {
515 if (isa<Function>(GV)) {
516 LinkName += MAI->getFunctionAddrPrefix();
517 LinkName += Mang->getMangledName(GV);
518 LinkName += MAI->getFunctionAddrSuffix();
520 LinkName += MAI->getGlobalVarAddrPrefix();
521 LinkName += Mang->getMangledName(GV);
522 LinkName += MAI->getGlobalVarAddrSuffix();
528 /// EmitExternalGlobal - Emit the external reference to a global variable.
529 /// Should be overridden if an indirect reference should be used.
530 void AsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
532 O << getGlobalLinkName(GV, GLN);
537 //===----------------------------------------------------------------------===//
538 /// LEB 128 number encoding.
540 /// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
541 /// representing an unsigned leb128 value.
542 void AsmPrinter::PrintULEB128(unsigned Value) const {
545 unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
547 if (Value) Byte |= 0x80;
548 O << "0x" << utohex_buffer(Byte, Buffer+20);
549 if (Value) O << ", ";
553 /// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
554 /// representing a signed leb128 value.
555 void AsmPrinter::PrintSLEB128(int Value) const {
556 int Sign = Value >> (8 * sizeof(Value) - 1);
561 unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
563 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
564 if (IsMore) Byte |= 0x80;
565 O << "0x" << utohex_buffer(Byte, Buffer+20);
566 if (IsMore) O << ", ";
570 //===--------------------------------------------------------------------===//
571 // Emission and print routines
574 /// PrintHex - Print a value as a hexidecimal value.
576 void AsmPrinter::PrintHex(int Value) const {
578 O << "0x" << utohex_buffer(static_cast<unsigned>(Value), Buffer+20);
581 /// EOL - Print a newline character to asm stream. If a comment is present
582 /// then it will be printed first. Comments should not contain '\n'.
583 void AsmPrinter::EOL() const {
587 void AsmPrinter::EOL(const std::string &Comment) const {
588 if (VerboseAsm && !Comment.empty()) {
589 O.PadToColumn(MAI->getCommentColumn());
590 O << MAI->getCommentString()
597 void AsmPrinter::EOL(const char* Comment) const {
598 if (VerboseAsm && *Comment) {
599 O.PadToColumn(MAI->getCommentColumn());
600 O << MAI->getCommentString()
607 static const char *GetDataFormatName(unsigned DataFormat) {
608 #ifndef HAVE_DESIGNATED_INITIALIZERS
609 #define HAVE_DESIGNATED_INITIALIZERS \
610 ((!defined(__cplusplus) && (GCC_VERSION >= 2007)) \
611 || (__STDC_VERSION__ >= 199901L))
614 #if HAVE_DESIGNATED_INITIALIZERS
615 #define S(p, v) [p] = v,
617 #define S(p, v) case p: return v;
620 #if HAVE_DESIGNATED_INITIALIZERS
621 __extension__ static const char * const FormatNames[256] = {
623 switch (DataFormat) {
626 S(dwarf::DW_EH_PE_absptr, "absolute")
627 S(dwarf::DW_EH_PE_omit, "omit")
628 S(dwarf::DW_EH_PE_aligned, "aligned absolute")
630 S(dwarf::DW_EH_PE_uleb128, "uleb128")
631 S(dwarf::DW_EH_PE_udata2, "udata2")
632 S(dwarf::DW_EH_PE_udata4, "udata4")
633 S(dwarf::DW_EH_PE_udata8, "udata8")
634 S(dwarf::DW_EH_PE_sleb128, "sleb128")
635 S(dwarf::DW_EH_PE_sdata2, "sdata2")
636 S(dwarf::DW_EH_PE_sdata4, "sdata4")
637 S(dwarf::DW_EH_PE_sdata8, "sdata8")
639 S(dwarf::DW_EH_PE_absptr | dwarf::DW_EH_PE_pcrel, "pcrel")
640 S(dwarf::DW_EH_PE_uleb128 | dwarf::DW_EH_PE_pcrel, "pcrel uleb128")
641 S(dwarf::DW_EH_PE_udata2 | dwarf::DW_EH_PE_pcrel, "pcrel udata2")
642 S(dwarf::DW_EH_PE_udata4 | dwarf::DW_EH_PE_pcrel, "pcrel udata4")
643 S(dwarf::DW_EH_PE_udata8 | dwarf::DW_EH_PE_pcrel, "pcrel udata8")
644 S(dwarf::DW_EH_PE_sleb128 | dwarf::DW_EH_PE_pcrel, "pcrel sleb128")
645 S(dwarf::DW_EH_PE_sdata2 | dwarf::DW_EH_PE_pcrel, "pcrel sdata2")
646 S(dwarf::DW_EH_PE_sdata4 | dwarf::DW_EH_PE_pcrel, "pcrel sdata4")
647 S(dwarf::DW_EH_PE_sdata8 | dwarf::DW_EH_PE_pcrel, "pcrel sdata8")
649 S(dwarf::DW_EH_PE_absptr | dwarf::DW_EH_PE_textrel, "textrel")
650 S(dwarf::DW_EH_PE_uleb128 | dwarf::DW_EH_PE_textrel, "textrel uleb128")
651 S(dwarf::DW_EH_PE_udata2 | dwarf::DW_EH_PE_textrel, "textrel udata2")
652 S(dwarf::DW_EH_PE_udata4 | dwarf::DW_EH_PE_textrel, "textrel udata4")
653 S(dwarf::DW_EH_PE_udata8 | dwarf::DW_EH_PE_textrel, "textrel udata8")
654 S(dwarf::DW_EH_PE_sleb128 | dwarf::DW_EH_PE_textrel, "textrel sleb128")
655 S(dwarf::DW_EH_PE_sdata2 | dwarf::DW_EH_PE_textrel, "textrel sdata2")
656 S(dwarf::DW_EH_PE_sdata4 | dwarf::DW_EH_PE_textrel, "textrel sdata4")
657 S(dwarf::DW_EH_PE_sdata8 | dwarf::DW_EH_PE_textrel, "textrel sdata8")
659 S(dwarf::DW_EH_PE_absptr | dwarf::DW_EH_PE_datarel, "datarel")
660 S(dwarf::DW_EH_PE_uleb128 | dwarf::DW_EH_PE_datarel, "datarel uleb128")
661 S(dwarf::DW_EH_PE_udata2 | dwarf::DW_EH_PE_datarel, "datarel udata2")
662 S(dwarf::DW_EH_PE_udata4 | dwarf::DW_EH_PE_datarel, "datarel udata4")
663 S(dwarf::DW_EH_PE_udata8 | dwarf::DW_EH_PE_datarel, "datarel udata8")
664 S(dwarf::DW_EH_PE_sleb128 | dwarf::DW_EH_PE_datarel, "datarel sleb128")
665 S(dwarf::DW_EH_PE_sdata2 | dwarf::DW_EH_PE_datarel, "datarel sdata2")
666 S(dwarf::DW_EH_PE_sdata4 | dwarf::DW_EH_PE_datarel, "datarel sdata4")
667 S(dwarf::DW_EH_PE_sdata8 | dwarf::DW_EH_PE_datarel, "datarel sdata8")
669 S(dwarf::DW_EH_PE_absptr | dwarf::DW_EH_PE_funcrel, "funcrel")
670 S(dwarf::DW_EH_PE_uleb128 | dwarf::DW_EH_PE_funcrel, "funcrel uleb128")
671 S(dwarf::DW_EH_PE_udata2 | dwarf::DW_EH_PE_funcrel, "funcrel udata2")
672 S(dwarf::DW_EH_PE_udata4 | dwarf::DW_EH_PE_funcrel, "funcrel udata4")
673 S(dwarf::DW_EH_PE_udata8 | dwarf::DW_EH_PE_funcrel, "funcrel udata8")
674 S(dwarf::DW_EH_PE_sleb128 | dwarf::DW_EH_PE_funcrel, "funcrel sleb128")
675 S(dwarf::DW_EH_PE_sdata2 | dwarf::DW_EH_PE_funcrel, "funcrel sdata2")
676 S(dwarf::DW_EH_PE_sdata4 | dwarf::DW_EH_PE_funcrel, "funcrel sdata4")
677 S(dwarf::DW_EH_PE_sdata8 | dwarf::DW_EH_PE_funcrel, "funcrel sdata8")
679 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_absptr |dwarf::DW_EH_PE_pcrel,
681 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_uleb128 |dwarf::DW_EH_PE_pcrel,
682 "indirect pcrel uleb128")
683 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata2 |dwarf::DW_EH_PE_pcrel,
684 "indirect pcrel udata2")
685 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata4 |dwarf::DW_EH_PE_pcrel,
686 "indirect pcrel udata4")
687 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata8 |dwarf::DW_EH_PE_pcrel,
688 "indirect pcrel udata8")
689 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sleb128 |dwarf::DW_EH_PE_pcrel,
690 "indirect pcrel sleb128")
691 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata2 |dwarf::DW_EH_PE_pcrel,
692 "indirect pcrel sdata2")
693 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata4 |dwarf::DW_EH_PE_pcrel,
694 "indirect pcrel sdata4")
695 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata8 |dwarf::DW_EH_PE_pcrel,
696 "indirect pcrel sdata8")
698 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_absptr |dwarf::DW_EH_PE_textrel,
700 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_uleb128 |dwarf::DW_EH_PE_textrel,
701 "indirect textrel uleb128")
702 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata2 |dwarf::DW_EH_PE_textrel,
703 "indirect textrel udata2")
704 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata4 |dwarf::DW_EH_PE_textrel,
705 "indirect textrel udata4")
706 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata8 |dwarf::DW_EH_PE_textrel,
707 "indirect textrel udata8")
708 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sleb128 |dwarf::DW_EH_PE_textrel,
709 "indirect textrel sleb128")
710 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata2 |dwarf::DW_EH_PE_textrel,
711 "indirect textrel sdata2")
712 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata4 |dwarf::DW_EH_PE_textrel,
713 "indirect textrel sdata4")
714 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata8 |dwarf::DW_EH_PE_textrel,
715 "indirect textrel sdata8")
717 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_absptr |dwarf::DW_EH_PE_datarel,
719 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_uleb128 |dwarf::DW_EH_PE_datarel,
720 "indirect datarel uleb128")
721 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata2 |dwarf::DW_EH_PE_datarel,
722 "indirect datarel udata2")
723 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata4 |dwarf::DW_EH_PE_datarel,
724 "indirect datarel udata4")
725 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata8 |dwarf::DW_EH_PE_datarel,
726 "indirect datarel udata8")
727 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sleb128 |dwarf::DW_EH_PE_datarel,
728 "indirect datarel sleb128")
729 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata2 |dwarf::DW_EH_PE_datarel,
730 "indirect datarel sdata2")
731 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata4 |dwarf::DW_EH_PE_datarel,
732 "indirect datarel sdata4")
733 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata8 |dwarf::DW_EH_PE_datarel,
734 "indirect datarel sdata8")
736 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_absptr |dwarf::DW_EH_PE_funcrel,
738 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_uleb128 |dwarf::DW_EH_PE_funcrel,
739 "indirect funcrel uleb128")
740 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata2 |dwarf::DW_EH_PE_funcrel,
741 "indirect funcrel udata2")
742 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata4 |dwarf::DW_EH_PE_funcrel,
743 "indirect funcrel udata4")
744 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_udata8 |dwarf::DW_EH_PE_funcrel,
745 "indirect funcrel udata8")
746 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sleb128 |dwarf::DW_EH_PE_funcrel,
747 "indirect funcrel sleb128")
748 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata2 |dwarf::DW_EH_PE_funcrel,
749 "indirect funcrel sdata2")
750 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata4 |dwarf::DW_EH_PE_funcrel,
751 "indirect funcrel sdata4")
752 S(dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_sdata8 |dwarf::DW_EH_PE_funcrel,
753 "indirect funcrel sdata8")
755 #if HAVE_DESIGNATED_INITIALIZERS
758 assert(DataFormat >= 0 && DataFormat < 0x100 && FormatNames[DataFormat] &&
759 "Invalid DWARF data format!");
760 return FormatNames[DataFormat];
763 llvm_unreachable("Invalid DWARF data format!");
766 #undef HAVE_DESIGNATED_INITIALIZERS
769 void AsmPrinter::EOL(const std::string &Comment, unsigned DataFormat) const {
770 if (VerboseAsm && !Comment.empty()) {
771 O.PadToColumn(MAI->getCommentColumn());
772 O << MAI->getCommentString()
773 << ' ' << Comment << " (" << GetDataFormatName(DataFormat) << ')';
778 void AsmPrinter::EOL(const char* Comment, unsigned DataFormat) const {
779 if (VerboseAsm && *Comment) {
780 O.PadToColumn(MAI->getCommentColumn());
781 O << MAI->getCommentString()
782 << ' ' << Comment << " (" << GetDataFormatName(DataFormat) << ')';
787 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
788 /// unsigned leb128 value.
789 void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
790 if (MAI->hasLEB128()) {
794 O << MAI->getData8bitsDirective();
799 /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
800 /// signed leb128 value.
801 void AsmPrinter::EmitSLEB128Bytes(int Value) const {
802 if (MAI->hasLEB128()) {
806 O << MAI->getData8bitsDirective();
811 /// EmitInt8 - Emit a byte directive and value.
813 void AsmPrinter::EmitInt8(int Value) const {
814 O << MAI->getData8bitsDirective();
815 PrintHex(Value & 0xFF);
818 /// EmitInt16 - Emit a short directive and value.
820 void AsmPrinter::EmitInt16(int Value) const {
821 O << MAI->getData16bitsDirective();
822 PrintHex(Value & 0xFFFF);
825 /// EmitInt32 - Emit a long directive and value.
827 void AsmPrinter::EmitInt32(int Value) const {
828 O << MAI->getData32bitsDirective();
832 /// EmitInt64 - Emit a long long directive and value.
834 void AsmPrinter::EmitInt64(uint64_t Value) const {
835 if (MAI->getData64bitsDirective()) {
836 O << MAI->getData64bitsDirective();
839 if (TM.getTargetData()->isBigEndian()) {
840 EmitInt32(unsigned(Value >> 32)); O << '\n';
841 EmitInt32(unsigned(Value));
843 EmitInt32(unsigned(Value)); O << '\n';
844 EmitInt32(unsigned(Value >> 32));
849 /// toOctal - Convert the low order bits of X into an octal digit.
851 static inline char toOctal(int X) {
855 /// printStringChar - Print a char, escaped if necessary.
857 static void printStringChar(formatted_raw_ostream &O, unsigned char C) {
860 } else if (C == '\\') {
862 } else if (isprint((unsigned char)C)) {
866 case '\b': O << "\\b"; break;
867 case '\f': O << "\\f"; break;
868 case '\n': O << "\\n"; break;
869 case '\r': O << "\\r"; break;
870 case '\t': O << "\\t"; break;
873 O << toOctal(C >> 6);
874 O << toOctal(C >> 3);
875 O << toOctal(C >> 0);
881 /// EmitString - Emit a string with quotes and a null terminator.
882 /// Special characters are emitted properly.
883 /// \literal (Eg. '\t') \endliteral
884 void AsmPrinter::EmitString(const std::string &String) const {
885 EmitString(String.c_str(), String.size());
888 void AsmPrinter::EmitString(const char *String, unsigned Size) const {
889 const char* AscizDirective = MAI->getAscizDirective();
893 O << MAI->getAsciiDirective();
895 for (unsigned i = 0; i < Size; ++i)
896 printStringChar(O, String[i]);
904 /// EmitFile - Emit a .file directive.
905 void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
906 O << "\t.file\t" << Number << " \"";
907 for (unsigned i = 0, N = Name.size(); i < N; ++i)
908 printStringChar(O, Name[i]);
913 //===----------------------------------------------------------------------===//
915 // EmitAlignment - Emit an alignment directive to the specified power of
916 // two boundary. For example, if you pass in 3 here, you will get an 8
917 // byte alignment. If a global value is specified, and if that global has
918 // an explicit alignment requested, it will unconditionally override the
919 // alignment request. However, if ForcedAlignBits is specified, this value
920 // has final say: the ultimate alignment will be the max of ForcedAlignBits
921 // and the alignment computed with NumBits and the global.
925 // if (GV && GV->hasalignment) Align = GV->getalignment();
926 // Align = std::max(Align, ForcedAlignBits);
928 void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
929 unsigned ForcedAlignBits,
930 bool UseFillExpr) const {
931 if (GV && GV->getAlignment())
932 NumBits = Log2_32(GV->getAlignment());
933 NumBits = std::max(NumBits, ForcedAlignBits);
935 if (NumBits == 0) return; // No need to emit alignment.
937 unsigned FillValue = 0;
938 if (getCurrentSection()->getKind().isText())
939 FillValue = MAI->getTextAlignFillValue();
941 OutStreamer.EmitValueToAlignment(1 << NumBits, FillValue, 1, 0);
944 /// EmitZeros - Emit a block of zeros.
946 void AsmPrinter::EmitZeros(uint64_t NumZeros, unsigned AddrSpace) const {
948 if (MAI->getZeroDirective()) {
949 O << MAI->getZeroDirective() << NumZeros;
950 if (MAI->getZeroDirectiveSuffix())
951 O << MAI->getZeroDirectiveSuffix();
954 for (; NumZeros; --NumZeros)
955 O << MAI->getData8bitsDirective(AddrSpace) << "0\n";
960 // Print out the specified constant, without a storage class. Only the
961 // constants valid in constant expressions can occur here.
962 void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
963 if (CV->isNullValue() || isa<UndefValue>(CV))
965 else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
966 O << CI->getZExtValue();
967 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
968 // This is a constant address for a global variable or function. Use the
969 // name of the variable or function as the address value, possibly
970 // decorating it with GlobalVarAddrPrefix/Suffix or
971 // FunctionAddrPrefix/Suffix (these all default to "" )
972 if (isa<Function>(GV)) {
973 O << MAI->getFunctionAddrPrefix()
974 << Mang->getMangledName(GV)
975 << MAI->getFunctionAddrSuffix();
977 O << MAI->getGlobalVarAddrPrefix()
978 << Mang->getMangledName(GV)
979 << MAI->getGlobalVarAddrSuffix();
981 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
982 const TargetData *TD = TM.getTargetData();
983 unsigned Opcode = CE->getOpcode();
985 case Instruction::Trunc:
986 case Instruction::ZExt:
987 case Instruction::SExt:
988 case Instruction::FPTrunc:
989 case Instruction::FPExt:
990 case Instruction::UIToFP:
991 case Instruction::SIToFP:
992 case Instruction::FPToUI:
993 case Instruction::FPToSI:
994 llvm_unreachable("FIXME: Don't support this constant cast expr");
995 case Instruction::GetElementPtr: {
996 // generate a symbolic expression for the byte address
997 const Constant *ptrVal = CE->getOperand(0);
998 SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
999 if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
1001 // Truncate/sext the offset to the pointer size.
1002 if (TD->getPointerSizeInBits() != 64) {
1003 int SExtAmount = 64-TD->getPointerSizeInBits();
1004 Offset = (Offset << SExtAmount) >> SExtAmount;
1009 EmitConstantValueOnly(ptrVal);
1011 O << ") + " << Offset;
1012 else if (Offset < 0)
1013 O << ") - " << -Offset;
1015 EmitConstantValueOnly(ptrVal);
1019 case Instruction::BitCast:
1020 return EmitConstantValueOnly(CE->getOperand(0));
1022 case Instruction::IntToPtr: {
1023 // Handle casts to pointers by changing them into casts to the appropriate
1024 // integer type. This promotes constant folding and simplifies this code.
1025 Constant *Op = CE->getOperand(0);
1026 Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(CV->getContext()),
1028 return EmitConstantValueOnly(Op);
1032 case Instruction::PtrToInt: {
1033 // Support only foldable casts to/from pointers that can be eliminated by
1034 // changing the pointer to the appropriately sized integer type.
1035 Constant *Op = CE->getOperand(0);
1036 const Type *Ty = CE->getType();
1038 // We can emit the pointer value into this slot if the slot is an
1039 // integer slot greater or equal to the size of the pointer.
1040 if (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType()))
1041 return EmitConstantValueOnly(Op);
1044 EmitConstantValueOnly(Op);
1046 APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType()));
1049 ptrMask.toStringUnsigned(S);
1050 O << ") & " << S.str() << ')';
1053 case Instruction::Add:
1054 case Instruction::Sub:
1055 case Instruction::And:
1056 case Instruction::Or:
1057 case Instruction::Xor:
1059 EmitConstantValueOnly(CE->getOperand(0));
1062 case Instruction::Add:
1065 case Instruction::Sub:
1068 case Instruction::And:
1071 case Instruction::Or:
1074 case Instruction::Xor:
1081 EmitConstantValueOnly(CE->getOperand(1));
1085 llvm_unreachable("Unsupported operator!");
1088 llvm_unreachable("Unknown constant value!");
1092 /// printAsCString - Print the specified array as a C compatible string, only if
1093 /// the predicate isString is true.
1095 static void printAsCString(formatted_raw_ostream &O, const ConstantArray *CVA,
1097 assert(CVA->isString() && "Array is not string compatible!");
1100 for (unsigned i = 0; i != LastElt; ++i) {
1102 (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
1103 printStringChar(O, C);
1108 /// EmitString - Emit a zero-byte-terminated string constant.
1110 void AsmPrinter::EmitString(const ConstantArray *CVA) const {
1111 unsigned NumElts = CVA->getNumOperands();
1112 if (MAI->getAscizDirective() && NumElts &&
1113 cast<ConstantInt>(CVA->getOperand(NumElts-1))->getZExtValue() == 0) {
1114 O << MAI->getAscizDirective();
1115 printAsCString(O, CVA, NumElts-1);
1117 O << MAI->getAsciiDirective();
1118 printAsCString(O, CVA, NumElts);
1123 void AsmPrinter::EmitGlobalConstantArray(const ConstantArray *CVA,
1124 unsigned AddrSpace) {
1125 if (CVA->isString()) {
1127 } else { // Not a string. Print the values in successive locations
1128 for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
1129 EmitGlobalConstant(CVA->getOperand(i), AddrSpace);
1133 void AsmPrinter::EmitGlobalConstantVector(const ConstantVector *CP) {
1134 const VectorType *PTy = CP->getType();
1136 for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
1137 EmitGlobalConstant(CP->getOperand(I));
1140 void AsmPrinter::EmitGlobalConstantStruct(const ConstantStruct *CVS,
1141 unsigned AddrSpace) {
1142 // Print the fields in successive locations. Pad to align if needed!
1143 const TargetData *TD = TM.getTargetData();
1144 unsigned Size = TD->getTypeAllocSize(CVS->getType());
1145 const StructLayout *cvsLayout = TD->getStructLayout(CVS->getType());
1146 uint64_t sizeSoFar = 0;
1147 for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
1148 const Constant* field = CVS->getOperand(i);
1150 // Check if padding is needed and insert one or more 0s.
1151 uint64_t fieldSize = TD->getTypeAllocSize(field->getType());
1152 uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
1153 - cvsLayout->getElementOffset(i)) - fieldSize;
1154 sizeSoFar += fieldSize + padSize;
1156 // Now print the actual field value.
1157 EmitGlobalConstant(field, AddrSpace);
1159 // Insert padding - this may include padding to increase the size of the
1160 // current field up to the ABI size (if the struct is not packed) as well
1161 // as padding to ensure that the next field starts at the right offset.
1162 EmitZeros(padSize, AddrSpace);
1164 assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
1165 "Layout of constant struct may be incorrect!");
1168 void AsmPrinter::EmitGlobalConstantFP(const ConstantFP *CFP,
1169 unsigned AddrSpace) {
1170 // FP Constants are printed as integer constants to avoid losing
1172 LLVMContext &Context = CFP->getContext();
1173 const TargetData *TD = TM.getTargetData();
1174 if (CFP->getType() == Type::getDoubleTy(Context)) {
1175 double Val = CFP->getValueAPF().convertToDouble(); // for comment only
1176 uint64_t i = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
1177 if (MAI->getData64bitsDirective(AddrSpace)) {
1178 O << MAI->getData64bitsDirective(AddrSpace) << i;
1180 O.PadToColumn(MAI->getCommentColumn());
1181 O << MAI->getCommentString() << " double " << Val;
1184 } else if (TD->isBigEndian()) {
1185 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
1187 O.PadToColumn(MAI->getCommentColumn());
1188 O << MAI->getCommentString()
1189 << " most significant word of double " << Val;
1192 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
1194 O.PadToColumn(MAI->getCommentColumn());
1195 O << MAI->getCommentString()
1196 << " least significant word of double " << Val;
1200 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
1202 O.PadToColumn(MAI->getCommentColumn());
1203 O << MAI->getCommentString()
1204 << " least significant word of double " << Val;
1207 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
1209 O.PadToColumn(MAI->getCommentColumn());
1210 O << MAI->getCommentString()
1211 << " most significant word of double " << Val;
1216 } else if (CFP->getType() == Type::getFloatTy(Context)) {
1217 float Val = CFP->getValueAPF().convertToFloat(); // for comment only
1218 O << MAI->getData32bitsDirective(AddrSpace)
1219 << CFP->getValueAPF().bitcastToAPInt().getZExtValue();
1221 O.PadToColumn(MAI->getCommentColumn());
1222 O << MAI->getCommentString() << " float " << Val;
1226 } else if (CFP->getType() == Type::getX86_FP80Ty(Context)) {
1227 // all long double variants are printed as hex
1228 // api needed to prevent premature destruction
1229 APInt api = CFP->getValueAPF().bitcastToAPInt();
1230 const uint64_t *p = api.getRawData();
1231 // Convert to double so we can print the approximate val as a comment.
1232 APFloat DoubleVal = CFP->getValueAPF();
1234 DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
1236 if (TD->isBigEndian()) {
1237 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
1239 O.PadToColumn(MAI->getCommentColumn());
1240 O << MAI->getCommentString()
1241 << " most significant halfword of x86_fp80 ~"
1242 << DoubleVal.convertToDouble();
1245 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
1247 O.PadToColumn(MAI->getCommentColumn());
1248 O << MAI->getCommentString() << " next halfword";
1251 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
1253 O.PadToColumn(MAI->getCommentColumn());
1254 O << MAI->getCommentString() << " next halfword";
1257 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
1259 O.PadToColumn(MAI->getCommentColumn());
1260 O << MAI->getCommentString() << " next halfword";
1263 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
1265 O.PadToColumn(MAI->getCommentColumn());
1266 O << MAI->getCommentString()
1267 << " least significant halfword";
1271 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
1273 O.PadToColumn(MAI->getCommentColumn());
1274 O << MAI->getCommentString()
1275 << " least significant halfword of x86_fp80 ~"
1276 << DoubleVal.convertToDouble();
1279 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
1281 O.PadToColumn(MAI->getCommentColumn());
1282 O << MAI->getCommentString()
1283 << " next halfword";
1286 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
1288 O.PadToColumn(MAI->getCommentColumn());
1289 O << MAI->getCommentString()
1290 << " next halfword";
1293 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
1295 O.PadToColumn(MAI->getCommentColumn());
1296 O << MAI->getCommentString()
1297 << " next halfword";
1300 O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
1302 O.PadToColumn(MAI->getCommentColumn());
1303 O << MAI->getCommentString()
1304 << " most significant halfword";
1308 EmitZeros(TD->getTypeAllocSize(Type::getX86_FP80Ty(Context)) -
1309 TD->getTypeStoreSize(Type::getX86_FP80Ty(Context)), AddrSpace);
1311 } else if (CFP->getType() == Type::getPPC_FP128Ty(Context)) {
1312 // all long double variants are printed as hex
1313 // api needed to prevent premature destruction
1314 APInt api = CFP->getValueAPF().bitcastToAPInt();
1315 const uint64_t *p = api.getRawData();
1316 if (TD->isBigEndian()) {
1317 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
1319 O.PadToColumn(MAI->getCommentColumn());
1320 O << MAI->getCommentString()
1321 << " most significant word of ppc_fp128";
1324 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
1326 O.PadToColumn(MAI->getCommentColumn());
1327 O << MAI->getCommentString()
1331 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
1333 O.PadToColumn(MAI->getCommentColumn());
1334 O << MAI->getCommentString()
1338 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
1340 O.PadToColumn(MAI->getCommentColumn());
1341 O << MAI->getCommentString()
1342 << " least significant word";
1346 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
1348 O.PadToColumn(MAI->getCommentColumn());
1349 O << MAI->getCommentString()
1350 << " least significant word of ppc_fp128";
1353 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
1355 O.PadToColumn(MAI->getCommentColumn());
1356 O << MAI->getCommentString()
1360 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
1362 O.PadToColumn(MAI->getCommentColumn());
1363 O << MAI->getCommentString()
1367 O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
1369 O.PadToColumn(MAI->getCommentColumn());
1370 O << MAI->getCommentString()
1371 << " most significant word";
1376 } else llvm_unreachable("Floating point constant type not handled");
1379 void AsmPrinter::EmitGlobalConstantLargeInt(const ConstantInt *CI,
1380 unsigned AddrSpace) {
1381 const TargetData *TD = TM.getTargetData();
1382 unsigned BitWidth = CI->getBitWidth();
1383 assert(isPowerOf2_32(BitWidth) &&
1384 "Non-power-of-2-sized integers not handled!");
1386 // We don't expect assemblers to support integer data directives
1387 // for more than 64 bits, so we emit the data in at most 64-bit
1388 // quantities at a time.
1389 const uint64_t *RawData = CI->getValue().getRawData();
1390 for (unsigned i = 0, e = BitWidth / 64; i != e; ++i) {
1392 if (TD->isBigEndian())
1393 Val = RawData[e - i - 1];
1397 if (MAI->getData64bitsDirective(AddrSpace))
1398 O << MAI->getData64bitsDirective(AddrSpace) << Val << '\n';
1399 else if (TD->isBigEndian()) {
1400 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val >> 32);
1402 O.PadToColumn(MAI->getCommentColumn());
1403 O << MAI->getCommentString()
1404 << " most significant half of i64 " << Val;
1407 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val);
1409 O.PadToColumn(MAI->getCommentColumn());
1410 O << MAI->getCommentString()
1411 << " least significant half of i64 " << Val;
1415 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val);
1417 O.PadToColumn(MAI->getCommentColumn());
1418 O << MAI->getCommentString()
1419 << " least significant half of i64 " << Val;
1422 O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val >> 32);
1424 O.PadToColumn(MAI->getCommentColumn());
1425 O << MAI->getCommentString()
1426 << " most significant half of i64 " << Val;
1433 /// EmitGlobalConstant - Print a general LLVM constant to the .s file.
1434 void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
1435 const TargetData *TD = TM.getTargetData();
1436 const Type *type = CV->getType();
1437 unsigned Size = TD->getTypeAllocSize(type);
1439 if (CV->isNullValue() || isa<UndefValue>(CV)) {
1440 EmitZeros(Size, AddrSpace);
1442 } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
1443 EmitGlobalConstantArray(CVA , AddrSpace);
1445 } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
1446 EmitGlobalConstantStruct(CVS, AddrSpace);
1448 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
1449 EmitGlobalConstantFP(CFP, AddrSpace);
1451 } else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1452 // Small integers are handled below; large integers are handled here.
1454 EmitGlobalConstantLargeInt(CI, AddrSpace);
1457 } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1458 EmitGlobalConstantVector(CP);
1462 printDataDirective(type, AddrSpace);
1463 EmitConstantValueOnly(CV);
1465 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1467 CI->getValue().toStringUnsigned(S, 16);
1468 O.PadToColumn(MAI->getCommentColumn());
1469 O << MAI->getCommentString() << " 0x" << S.str();
1475 void AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
1476 // Target doesn't support this yet!
1477 llvm_unreachable("Target does not support EmitMachineConstantPoolValue");
1480 /// PrintSpecial - Print information related to the specified machine instr
1481 /// that is independent of the operand, and may be independent of the instr
1482 /// itself. This can be useful for portably encoding the comment character
1483 /// or other bits of target-specific knowledge into the asmstrings. The
1484 /// syntax used is ${:comment}. Targets can override this to add support
1485 /// for their own strange codes.
1486 void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) const {
1487 if (!strcmp(Code, "private")) {
1488 O << MAI->getPrivateGlobalPrefix();
1489 } else if (!strcmp(Code, "comment")) {
1491 O << MAI->getCommentString();
1492 } else if (!strcmp(Code, "uid")) {
1493 // Comparing the address of MI isn't sufficient, because machineinstrs may
1494 // be allocated to the same address across functions.
1495 const Function *ThisF = MI->getParent()->getParent()->getFunction();
1497 // If this is a new LastFn instruction, bump the counter.
1498 if (LastMI != MI || LastFn != ThisF) {
1506 raw_string_ostream Msg(msg);
1507 Msg << "Unknown special formatter '" << Code
1508 << "' for machine instr: " << *MI;
1509 llvm_report_error(Msg.str());
1513 /// processDebugLoc - Processes the debug information of each machine
1514 /// instruction's DebugLoc.
1515 void AsmPrinter::processDebugLoc(DebugLoc DL) {
1519 if (MAI->doesSupportDebugInformation() && DW->ShouldEmitDwarfDebug()) {
1520 if (!DL.isUnknown()) {
1521 DebugLocTuple CurDLT = MF->getDebugLocTuple(DL);
1523 if (CurDLT.CompileUnit != 0 && PrevDLT != CurDLT)
1524 printLabel(DW->RecordSourceLine(CurDLT.Line, CurDLT.Col,
1525 DICompileUnit(CurDLT.CompileUnit)));
1532 /// printInlineAsm - This method formats and prints the specified machine
1533 /// instruction that is an inline asm.
1534 void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
1535 unsigned NumOperands = MI->getNumOperands();
1537 // Count the number of register definitions.
1538 unsigned NumDefs = 0;
1539 for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef();
1541 assert(NumDefs != NumOperands-1 && "No asm string?");
1543 assert(MI->getOperand(NumDefs).isSymbol() && "No asm string?");
1545 // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
1546 const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
1548 // If this asmstr is empty, just print the #APP/#NOAPP markers.
1549 // These are useful to see where empty asm's wound up.
1550 if (AsmStr[0] == 0) {
1551 O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
1552 O << MAI->getCommentString() << MAI->getInlineAsmEnd() << '\n';
1556 O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
1558 // The variant of the current asmprinter.
1559 int AsmPrinterVariant = MAI->getAssemblerDialect();
1561 int CurVariant = -1; // The number of the {.|.|.} region we are in.
1562 const char *LastEmitted = AsmStr; // One past the last character emitted.
1564 while (*LastEmitted) {
1565 switch (*LastEmitted) {
1567 // Not a special case, emit the string section literally.
1568 const char *LiteralEnd = LastEmitted+1;
1569 while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
1570 *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
1572 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1573 O.write(LastEmitted, LiteralEnd-LastEmitted);
1574 LastEmitted = LiteralEnd;
1578 ++LastEmitted; // Consume newline character.
1579 O << '\n'; // Indent code with newline.
1582 ++LastEmitted; // Consume '$' character.
1586 switch (*LastEmitted) {
1587 default: Done = false; break;
1588 case '$': // $$ -> $
1589 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1591 ++LastEmitted; // Consume second '$' character.
1593 case '(': // $( -> same as GCC's { character.
1594 ++LastEmitted; // Consume '(' character.
1595 if (CurVariant != -1) {
1596 llvm_report_error("Nested variants found in inline asm string: '"
1597 + std::string(AsmStr) + "'");
1599 CurVariant = 0; // We're in the first variant now.
1602 ++LastEmitted; // consume '|' character.
1603 if (CurVariant == -1)
1604 O << '|'; // this is gcc's behavior for | outside a variant
1606 ++CurVariant; // We're in the next variant.
1608 case ')': // $) -> same as GCC's } char.
1609 ++LastEmitted; // consume ')' character.
1610 if (CurVariant == -1)
1611 O << '}'; // this is gcc's behavior for } outside a variant
1618 bool HasCurlyBraces = false;
1619 if (*LastEmitted == '{') { // ${variable}
1620 ++LastEmitted; // Consume '{' character.
1621 HasCurlyBraces = true;
1624 // If we have ${:foo}, then this is not a real operand reference, it is a
1625 // "magic" string reference, just like in .td files. Arrange to call
1627 if (HasCurlyBraces && *LastEmitted == ':') {
1629 const char *StrStart = LastEmitted;
1630 const char *StrEnd = strchr(StrStart, '}');
1632 llvm_report_error("Unterminated ${:foo} operand in inline asm string: '"
1633 + std::string(AsmStr) + "'");
1636 std::string Val(StrStart, StrEnd);
1637 PrintSpecial(MI, Val.c_str());
1638 LastEmitted = StrEnd+1;
1642 const char *IDStart = LastEmitted;
1645 long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
1646 if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
1647 llvm_report_error("Bad $ operand number in inline asm string: '"
1648 + std::string(AsmStr) + "'");
1650 LastEmitted = IDEnd;
1652 char Modifier[2] = { 0, 0 };
1654 if (HasCurlyBraces) {
1655 // If we have curly braces, check for a modifier character. This
1656 // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
1657 if (*LastEmitted == ':') {
1658 ++LastEmitted; // Consume ':' character.
1659 if (*LastEmitted == 0) {
1660 llvm_report_error("Bad ${:} expression in inline asm string: '"
1661 + std::string(AsmStr) + "'");
1664 Modifier[0] = *LastEmitted;
1665 ++LastEmitted; // Consume modifier character.
1668 if (*LastEmitted != '}') {
1669 llvm_report_error("Bad ${} expression in inline asm string: '"
1670 + std::string(AsmStr) + "'");
1672 ++LastEmitted; // Consume '}' character.
1675 if ((unsigned)Val >= NumOperands-1) {
1676 llvm_report_error("Invalid $ operand number in inline asm string: '"
1677 + std::string(AsmStr) + "'");
1680 // Okay, we finally have a value number. Ask the target to print this
1682 if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
1687 // Scan to find the machine operand number for the operand.
1688 for (; Val; --Val) {
1689 if (OpNo >= MI->getNumOperands()) break;
1690 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1691 OpNo += InlineAsm::getNumOperandRegisters(OpFlags) + 1;
1694 if (OpNo >= MI->getNumOperands()) {
1697 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1698 ++OpNo; // Skip over the ID number.
1700 if (Modifier[0]=='l') // labels are target independent
1701 printBasicBlockLabel(MI->getOperand(OpNo).getMBB(),
1702 false, false, false);
1704 AsmPrinter *AP = const_cast<AsmPrinter*>(this);
1705 if ((OpFlags & 7) == 4) {
1706 Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
1707 Modifier[0] ? Modifier : 0);
1709 Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
1710 Modifier[0] ? Modifier : 0);
1716 raw_string_ostream Msg(msg);
1717 Msg << "Invalid operand found in inline asm: '"
1720 llvm_report_error(Msg.str());
1727 O << "\n\t" << MAI->getCommentString() << MAI->getInlineAsmEnd() << '\n';
1730 /// printImplicitDef - This method prints the specified machine instruction
1731 /// that is an implicit def.
1732 void AsmPrinter::printImplicitDef(const MachineInstr *MI) const {
1734 O.PadToColumn(MAI->getCommentColumn());
1735 O << MAI->getCommentString() << " implicit-def: "
1736 << TRI->getAsmName(MI->getOperand(0).getReg()) << '\n';
1740 /// printLabel - This method prints a local label used by debug and
1741 /// exception handling tables.
1742 void AsmPrinter::printLabel(const MachineInstr *MI) const {
1743 printLabel(MI->getOperand(0).getImm());
1746 void AsmPrinter::printLabel(unsigned Id) const {
1747 O << MAI->getPrivateGlobalPrefix() << "label" << Id << ":\n";
1750 /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
1751 /// instruction, using the specified assembler variant. Targets should
1752 /// overried this to format as appropriate.
1753 bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
1754 unsigned AsmVariant, const char *ExtraCode) {
1755 // Target doesn't support this yet!
1759 bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
1760 unsigned AsmVariant,
1761 const char *ExtraCode) {
1762 // Target doesn't support this yet!
1766 /// printBasicBlockLabel - This method prints the label for the specified
1767 /// MachineBasicBlock
1768 void AsmPrinter::printBasicBlockLabel(const MachineBasicBlock *MBB,
1771 bool printComment) const {
1773 unsigned Align = MBB->getAlignment();
1775 EmitAlignment(Log2_32(Align));
1778 O << MAI->getPrivateGlobalPrefix() << "BB" << getFunctionNumber() << '_'
1779 << MBB->getNumber();
1783 if (const BasicBlock *BB = MBB->getBasicBlock())
1784 if (BB->hasName()) {
1785 O.PadToColumn(MAI->getCommentColumn());
1786 O << MAI->getCommentString() << ' ';
1787 WriteAsOperand(O, BB, /*PrintType=*/false);
1795 /// printPICJumpTableSetLabel - This method prints a set label for the
1796 /// specified MachineBasicBlock for a jumptable entry.
1797 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
1798 const MachineBasicBlock *MBB) const {
1799 if (!MAI->getSetDirective())
1802 O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
1803 << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
1804 printBasicBlockLabel(MBB, false, false, false);
1805 O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1806 << '_' << uid << '\n';
1809 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
1810 const MachineBasicBlock *MBB) const {
1811 if (!MAI->getSetDirective())
1814 O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
1815 << getFunctionNumber() << '_' << uid << '_' << uid2
1816 << "_set_" << MBB->getNumber() << ',';
1817 printBasicBlockLabel(MBB, false, false, false);
1818 O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1819 << '_' << uid << '_' << uid2 << '\n';
1822 /// printDataDirective - This method prints the asm directive for the
1824 void AsmPrinter::printDataDirective(const Type *type, unsigned AddrSpace) {
1825 const TargetData *TD = TM.getTargetData();
1826 switch (type->getTypeID()) {
1827 case Type::FloatTyID: case Type::DoubleTyID:
1828 case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
1829 assert(0 && "Should have already output floating point constant.");
1831 assert(0 && "Can't handle printing this type of thing");
1832 case Type::IntegerTyID: {
1833 unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
1835 O << MAI->getData8bitsDirective(AddrSpace);
1836 else if (BitWidth <= 16)
1837 O << MAI->getData16bitsDirective(AddrSpace);
1838 else if (BitWidth <= 32)
1839 O << MAI->getData32bitsDirective(AddrSpace);
1840 else if (BitWidth <= 64) {
1841 assert(MAI->getData64bitsDirective(AddrSpace) &&
1842 "Target cannot handle 64-bit constant exprs!");
1843 O << MAI->getData64bitsDirective(AddrSpace);
1845 llvm_unreachable("Target cannot handle given data directive width!");
1849 case Type::PointerTyID:
1850 if (TD->getPointerSize() == 8) {
1851 assert(MAI->getData64bitsDirective(AddrSpace) &&
1852 "Target cannot handle 64-bit pointer exprs!");
1853 O << MAI->getData64bitsDirective(AddrSpace);
1854 } else if (TD->getPointerSize() == 2) {
1855 O << MAI->getData16bitsDirective(AddrSpace);
1856 } else if (TD->getPointerSize() == 1) {
1857 O << MAI->getData8bitsDirective(AddrSpace);
1859 O << MAI->getData32bitsDirective(AddrSpace);
1865 void AsmPrinter::printVisibility(const std::string& Name,
1866 unsigned Visibility) const {
1867 if (Visibility == GlobalValue::HiddenVisibility) {
1868 if (const char *Directive = MAI->getHiddenDirective())
1869 O << Directive << Name << '\n';
1870 } else if (Visibility == GlobalValue::ProtectedVisibility) {
1871 if (const char *Directive = MAI->getProtectedDirective())
1872 O << Directive << Name << '\n';
1876 void AsmPrinter::printOffset(int64_t Offset) const {
1879 else if (Offset < 0)
1883 void AsmPrinter::printMCInst(const MCInst *MI) {
1884 llvm_unreachable("MCInst printing unavailable on this target!");
1887 GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy *S) {
1888 if (!S->usesMetadata())
1891 gcp_iterator GCPI = GCMetadataPrinters.find(S);
1892 if (GCPI != GCMetadataPrinters.end())
1893 return GCPI->second;
1895 const char *Name = S->getName().c_str();
1897 for (GCMetadataPrinterRegistry::iterator
1898 I = GCMetadataPrinterRegistry::begin(),
1899 E = GCMetadataPrinterRegistry::end(); I != E; ++I)
1900 if (strcmp(Name, I->getName()) == 0) {
1901 GCMetadataPrinter *GMP = I->instantiate();
1903 GCMetadataPrinters.insert(std::make_pair(S, GMP));
1907 errs() << "no GCMetadataPrinter registered for GC: " << Name << "\n";
1908 llvm_unreachable(0);
1911 /// EmitComments - Pretty-print comments for instructions
1912 void AsmPrinter::EmitComments(const MachineInstr &MI) const {
1914 MI.getDebugLoc().isUnknown())
1917 DebugLocTuple DLT = MF->getDebugLocTuple(MI.getDebugLoc());
1919 // Print source line info.
1920 O.PadToColumn(MAI->getCommentColumn());
1921 O << MAI->getCommentString() << " SrcLine ";
1922 if (DLT.CompileUnit->hasInitializer()) {
1923 Constant *Name = DLT.CompileUnit->getInitializer();
1924 if (ConstantArray *NameString = dyn_cast<ConstantArray>(Name))
1925 if (NameString->isString())
1926 O << NameString->getAsString() << " ";
1930 O << ":" << DLT.Col;
1933 /// EmitComments - Pretty-print comments for instructions
1934 void AsmPrinter::EmitComments(const MCInst &MI) const {
1936 MI.getDebugLoc().isUnknown())
1939 DebugLocTuple DLT = MF->getDebugLocTuple(MI.getDebugLoc());
1941 // Print source line info
1942 O.PadToColumn(MAI->getCommentColumn());
1943 O << MAI->getCommentString() << " SrcLine ";
1944 if (DLT.CompileUnit->hasInitializer()) {
1945 Constant *Name = DLT.CompileUnit->getInitializer();
1946 if (ConstantArray *NameString = dyn_cast<ConstantArray>(Name))
1947 if (NameString->isString())
1948 O << NameString->getAsString() << " ";
1952 O << ":" << DLT.Col;
1955 /// PrintChildLoopComment - Print comments about child loops within
1956 /// the loop for this basic block, with nesting.
1958 static void PrintChildLoopComment(formatted_raw_ostream &O,
1959 const MachineLoop *loop,
1960 const MCAsmInfo *MAI,
1961 int FunctionNumber) {
1962 // Add child loop information
1963 for(MachineLoop::iterator cl = loop->begin(),
1964 clend = loop->end();
1967 MachineBasicBlock *Header = (*cl)->getHeader();
1968 assert(Header && "No header for loop");
1971 O.PadToColumn(MAI->getCommentColumn());
1973 O << MAI->getCommentString();
1974 O.indent(((*cl)->getLoopDepth()-1)*2)
1975 << " Child Loop BB" << FunctionNumber << "_"
1976 << Header->getNumber() << " Depth " << (*cl)->getLoopDepth();
1978 PrintChildLoopComment(O, *cl, MAI, FunctionNumber);
1982 /// EmitComments - Pretty-print comments for basic blocks
1983 void AsmPrinter::EmitComments(const MachineBasicBlock &MBB) const
1986 // Add loop depth information
1987 const MachineLoop *loop = LI->getLoopFor(&MBB);
1990 // Print a newline after bb# annotation.
1992 O.PadToColumn(MAI->getCommentColumn());
1993 O << MAI->getCommentString() << " Loop Depth " << loop->getLoopDepth()
1996 O.PadToColumn(MAI->getCommentColumn());
1998 MachineBasicBlock *Header = loop->getHeader();
1999 assert(Header && "No header for loop");
2001 if (Header == &MBB) {
2002 O << MAI->getCommentString() << " Loop Header";
2003 PrintChildLoopComment(O, loop, MAI, getFunctionNumber());
2006 O << MAI->getCommentString() << " Loop Header is BB"
2007 << getFunctionNumber() << "_" << loop->getHeader()->getNumber();
2010 if (loop->empty()) {
2012 O.PadToColumn(MAI->getCommentColumn());
2013 O << MAI->getCommentString() << " Inner Loop";
2016 // Add parent loop information
2017 for (const MachineLoop *CurLoop = loop->getParentLoop();
2019 CurLoop = CurLoop->getParentLoop()) {
2020 MachineBasicBlock *Header = CurLoop->getHeader();
2021 assert(Header && "No header for loop");
2024 O.PadToColumn(MAI->getCommentColumn());
2025 O << MAI->getCommentString();
2026 O.indent((CurLoop->getLoopDepth()-1)*2)
2027 << " Inside Loop BB" << getFunctionNumber() << "_"
2028 << Header->getNumber() << " Depth " << CurLoop->getLoopDepth();