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/Collector.h"
20 #include "llvm/CodeGen/CollectorMetadata.h"
21 #include "llvm/CodeGen/MachineConstantPool.h"
22 #include "llvm/CodeGen/MachineJumpTableInfo.h"
23 #include "llvm/CodeGen/MachineModuleInfo.h"
24 #include "llvm/Support/CommandLine.h"
25 #include "llvm/Support/Mangler.h"
26 #include "llvm/Support/MathExtras.h"
27 #include "llvm/Support/Streams.h"
28 #include "llvm/Target/TargetAsmInfo.h"
29 #include "llvm/Target/TargetData.h"
30 #include "llvm/Target/TargetLowering.h"
31 #include "llvm/Target/TargetMachine.h"
32 #include "llvm/ADT/SmallPtrSet.h"
37 AsmVerbose("asm-verbose", cl::Hidden, cl::desc("Add comments to directives."));
39 char AsmPrinter::ID = 0;
40 AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm,
41 const TargetAsmInfo *T)
42 : MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o), TM(tm), TAI(T),
43 IsInTextSection(false)
46 std::string AsmPrinter::getSectionForFunction(const Function &F) const {
47 return TAI->getTextSection();
51 /// SwitchToTextSection - Switch to the specified text section of the executable
52 /// if we are not already in it!
54 void AsmPrinter::SwitchToTextSection(const char *NewSection,
55 const GlobalValue *GV) {
57 if (GV && GV->hasSection())
58 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
62 // If we're already in this section, we're done.
63 if (CurrentSection == NS) return;
65 // Close the current section, if applicable.
66 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
67 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
71 if (!CurrentSection.empty())
72 O << CurrentSection << TAI->getTextSectionStartSuffix() << '\n';
74 IsInTextSection = true;
77 /// SwitchToDataSection - Switch to the specified data section of the executable
78 /// if we are not already in it!
80 void AsmPrinter::SwitchToDataSection(const char *NewSection,
81 const GlobalValue *GV) {
83 if (GV && GV->hasSection())
84 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
88 // If we're already in this section, we're done.
89 if (CurrentSection == NS) return;
91 // Close the current section, if applicable.
92 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
93 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
97 if (!CurrentSection.empty())
98 O << CurrentSection << TAI->getDataSectionStartSuffix() << '\n';
100 IsInTextSection = false;
104 void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
105 MachineFunctionPass::getAnalysisUsage(AU);
106 AU.addRequired<CollectorModuleMetadata>();
109 bool AsmPrinter::doInitialization(Module &M) {
110 Mang = new Mangler(M, TAI->getGlobalPrefix());
112 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
113 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
114 for (CollectorModuleMetadata::iterator I = CMM->begin(),
115 E = CMM->end(); I != E; ++I)
116 (*I)->beginAssembly(O, *this, *TAI);
118 if (!M.getModuleInlineAsm().empty())
119 O << TAI->getCommentString() << " Start of file scope inline assembly\n"
120 << M.getModuleInlineAsm()
121 << "\n" << TAI->getCommentString()
122 << " End of file scope inline assembly\n";
124 SwitchToDataSection(""); // Reset back to no section.
126 MMI = getAnalysisToUpdate<MachineModuleInfo>();
127 if (MMI) MMI->AnalyzeModule(M);
132 bool AsmPrinter::doFinalization(Module &M) {
133 if (TAI->getWeakRefDirective()) {
134 if (!ExtWeakSymbols.empty())
135 SwitchToDataSection("");
137 for (std::set<const GlobalValue*>::iterator i = ExtWeakSymbols.begin(),
138 e = ExtWeakSymbols.end(); i != e; ++i) {
139 const GlobalValue *GV = *i;
140 std::string Name = Mang->getValueName(GV);
141 O << TAI->getWeakRefDirective() << Name << "\n";
145 if (TAI->getSetDirective()) {
146 if (!M.alias_empty())
147 SwitchToTextSection(TAI->getTextSection());
150 for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
152 std::string Name = Mang->getValueName(I);
155 const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
156 Target = Mang->getValueName(GV);
158 if (I->hasExternalLinkage() || !TAI->getWeakRefDirective())
159 O << "\t.globl\t" << Name << "\n";
160 else if (I->hasWeakLinkage())
161 O << TAI->getWeakRefDirective() << Name << "\n";
162 else if (!I->hasInternalLinkage())
163 assert(0 && "Invalid alias linkage");
165 if (I->hasHiddenVisibility()) {
166 if (const char *Directive = TAI->getHiddenDirective())
167 O << Directive << Name << "\n";
168 } else if (I->hasProtectedVisibility()) {
169 if (const char *Directive = TAI->getProtectedDirective())
170 O << Directive << Name << "\n";
173 O << TAI->getSetDirective() << ' ' << Name << ", " << Target << "\n";
175 // If the aliasee has external weak linkage it can be referenced only by
176 // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
177 // weak reference in such case.
178 if (GV->hasExternalWeakLinkage()) {
179 if (TAI->getWeakRefDirective())
180 O << TAI->getWeakRefDirective() << Target << "\n";
182 O << "\t.globl\t" << Target << "\n";
187 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
188 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
189 for (CollectorModuleMetadata::iterator I = CMM->end(),
190 E = CMM->begin(); I != E; )
191 (*--I)->finishAssembly(O, *this, *TAI);
193 delete Mang; Mang = 0;
197 std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
198 assert(MF && "No machine function?");
199 return Mang->makeNameProper(MF->getFunction()->getName() + ".eh",
200 TAI->getGlobalPrefix());
203 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
204 // What's my mangled name?
205 CurrentFnName = Mang->getValueName(MF.getFunction());
206 IncrementFunctionNumber();
209 /// EmitConstantPool - Print to the current output stream assembly
210 /// representations of the constants in the constant pool MCP. This is
211 /// used to print out constants which have been "spilled to memory" by
212 /// the code generator.
214 void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
215 const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
216 if (CP.empty()) return;
218 // Some targets require 4-, 8-, and 16- byte constant literals to be placed
219 // in special sections.
220 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > FourByteCPs;
221 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > EightByteCPs;
222 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > SixteenByteCPs;
223 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > OtherCPs;
224 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > TargetCPs;
225 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
226 MachineConstantPoolEntry CPE = CP[i];
227 const Type *Ty = CPE.getType();
228 if (TAI->getFourByteConstantSection() &&
229 TM.getTargetData()->getABITypeSize(Ty) == 4)
230 FourByteCPs.push_back(std::make_pair(CPE, i));
231 else if (TAI->getEightByteConstantSection() &&
232 TM.getTargetData()->getABITypeSize(Ty) == 8)
233 EightByteCPs.push_back(std::make_pair(CPE, i));
234 else if (TAI->getSixteenByteConstantSection() &&
235 TM.getTargetData()->getABITypeSize(Ty) == 16)
236 SixteenByteCPs.push_back(std::make_pair(CPE, i));
238 OtherCPs.push_back(std::make_pair(CPE, i));
241 unsigned Alignment = MCP->getConstantPoolAlignment();
242 EmitConstantPool(Alignment, TAI->getFourByteConstantSection(), FourByteCPs);
243 EmitConstantPool(Alignment, TAI->getEightByteConstantSection(), EightByteCPs);
244 EmitConstantPool(Alignment, TAI->getSixteenByteConstantSection(),
246 EmitConstantPool(Alignment, TAI->getConstantPoolSection(), OtherCPs);
249 void AsmPrinter::EmitConstantPool(unsigned Alignment, const char *Section,
250 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > &CP) {
251 if (CP.empty()) return;
253 SwitchToDataSection(Section);
254 EmitAlignment(Alignment);
255 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
256 O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
257 << CP[i].second << ":\t\t\t\t\t" << TAI->getCommentString() << " ";
258 WriteTypeSymbolic(O, CP[i].first.getType(), 0) << '\n';
259 if (CP[i].first.isMachineConstantPoolEntry())
260 EmitMachineConstantPoolValue(CP[i].first.Val.MachineCPVal);
262 EmitGlobalConstant(CP[i].first.Val.ConstVal);
264 const Type *Ty = CP[i].first.getType();
266 TM.getTargetData()->getABITypeSize(Ty);
267 unsigned ValEnd = CP[i].first.getOffset() + EntSize;
268 // Emit inter-object padding for alignment.
269 EmitZeros(CP[i+1].first.getOffset()-ValEnd);
274 /// EmitJumpTableInfo - Print assembly representations of the jump tables used
275 /// by the current function to the current output stream.
277 void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
278 MachineFunction &MF) {
279 const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
280 if (JT.empty()) return;
282 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
284 // Pick the directive to use to print the jump table entries, and switch to
285 // the appropriate section.
286 TargetLowering *LoweringInfo = TM.getTargetLowering();
288 const char* JumpTableDataSection = TAI->getJumpTableDataSection();
289 if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
290 !JumpTableDataSection) {
291 // In PIC mode, we need to emit the jump table to the same section as the
292 // function body itself, otherwise the label differences won't make sense.
293 // We should also do if the section name is NULL.
294 const Function *F = MF.getFunction();
295 SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
297 SwitchToDataSection(JumpTableDataSection);
300 EmitAlignment(Log2_32(MJTI->getAlignment()));
302 for (unsigned i = 0, e = JT.size(); i != e; ++i) {
303 const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
305 // If this jump table was deleted, ignore it.
306 if (JTBBs.empty()) continue;
308 // For PIC codegen, if possible we want to use the SetDirective to reduce
309 // the number of relocations the assembler will generate for the jump table.
310 // Set directives are all printed before the jump table itself.
311 SmallPtrSet<MachineBasicBlock*, 16> EmittedSets;
312 if (TAI->getSetDirective() && IsPic)
313 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
314 if (EmittedSets.insert(JTBBs[ii]))
315 printPICJumpTableSetLabel(i, JTBBs[ii]);
317 // On some targets (e.g. darwin) we want to emit two consequtive labels
318 // before each jump table. The first label is never referenced, but tells
319 // the assembler and linker the extents of the jump table object. The
320 // second label is actually referenced by the code.
321 if (const char *JTLabelPrefix = TAI->getJumpTableSpecialLabelPrefix())
322 O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
324 O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
325 << '_' << i << ":\n";
327 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
328 printPICJumpTableEntry(MJTI, JTBBs[ii], i);
334 void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
335 const MachineBasicBlock *MBB,
336 unsigned uid) const {
337 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
339 // Use JumpTableDirective otherwise honor the entry size from the jump table
341 const char *JTEntryDirective = TAI->getJumpTableDirective();
342 bool HadJTEntryDirective = JTEntryDirective != NULL;
343 if (!HadJTEntryDirective) {
344 JTEntryDirective = MJTI->getEntrySize() == 4 ?
345 TAI->getData32bitsDirective() : TAI->getData64bitsDirective();
348 O << JTEntryDirective << ' ';
350 // If we have emitted set directives for the jump table entries, print
351 // them rather than the entries themselves. If we're emitting PIC, then
352 // emit the table entries as differences between two text section labels.
353 // If we're emitting non-PIC code, then emit the entries as direct
354 // references to the target basic blocks.
356 if (TAI->getSetDirective()) {
357 O << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
358 << '_' << uid << "_set_" << MBB->getNumber();
360 printBasicBlockLabel(MBB, false, false, false);
361 // If the arch uses custom Jump Table directives, don't calc relative to
363 if (!HadJTEntryDirective)
364 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
365 << getFunctionNumber() << '_' << uid;
368 printBasicBlockLabel(MBB, false, false, false);
373 /// EmitSpecialLLVMGlobal - Check to see if the specified global is a
374 /// special global used by LLVM. If so, emit it and return true, otherwise
375 /// do nothing and return false.
376 bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
377 if (GV->getName() == "llvm.used") {
378 if (TAI->getUsedDirective() != 0) // No need to emit this at all.
379 EmitLLVMUsedList(GV->getInitializer());
383 // Ignore debug and non-emitted data.
384 if (GV->getSection() == "llvm.metadata") return true;
386 if (!GV->hasAppendingLinkage()) return false;
388 assert(GV->hasInitializer() && "Not a special LLVM global!");
390 const TargetData *TD = TM.getTargetData();
391 unsigned Align = Log2_32(TD->getPointerPrefAlignment());
392 if (GV->getName() == "llvm.global_ctors" && GV->use_empty()) {
393 SwitchToDataSection(TAI->getStaticCtorsSection());
394 EmitAlignment(Align, 0);
395 EmitXXStructorList(GV->getInitializer());
399 if (GV->getName() == "llvm.global_dtors" && GV->use_empty()) {
400 SwitchToDataSection(TAI->getStaticDtorsSection());
401 EmitAlignment(Align, 0);
402 EmitXXStructorList(GV->getInitializer());
409 /// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
410 /// global in the specified llvm.used list as being used with this directive.
411 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
412 const char *Directive = TAI->getUsedDirective();
414 // Should be an array of 'sbyte*'.
415 ConstantArray *InitList = dyn_cast<ConstantArray>(List);
416 if (InitList == 0) return;
418 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
420 EmitConstantValueOnly(InitList->getOperand(i));
425 /// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
426 /// function pointers, ignoring the init priority.
427 void AsmPrinter::EmitXXStructorList(Constant *List) {
428 // Should be an array of '{ int, void ()* }' structs. The first value is the
429 // init priority, which we ignore.
430 if (!isa<ConstantArray>(List)) return;
431 ConstantArray *InitList = cast<ConstantArray>(List);
432 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
433 if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
434 if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
436 if (CS->getOperand(1)->isNullValue())
437 return; // Found a null terminator, exit printing.
438 // Emit the function pointer.
439 EmitGlobalConstant(CS->getOperand(1));
443 /// getGlobalLinkName - Returns the asm/link name of of the specified
444 /// global variable. Should be overridden by each target asm printer to
445 /// generate the appropriate value.
446 const std::string AsmPrinter::getGlobalLinkName(const GlobalVariable *GV) const{
447 std::string LinkName;
449 if (isa<Function>(GV)) {
450 LinkName += TAI->getFunctionAddrPrefix();
451 LinkName += Mang->getValueName(GV);
452 LinkName += TAI->getFunctionAddrSuffix();
454 LinkName += TAI->getGlobalVarAddrPrefix();
455 LinkName += Mang->getValueName(GV);
456 LinkName += TAI->getGlobalVarAddrSuffix();
462 /// EmitExternalGlobal - Emit the external reference to a global variable.
463 /// Should be overridden if an indirect reference should be used.
464 void AsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
465 O << getGlobalLinkName(GV);
470 //===----------------------------------------------------------------------===//
471 /// LEB 128 number encoding.
473 /// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
474 /// representing an unsigned leb128 value.
475 void AsmPrinter::PrintULEB128(unsigned Value) const {
477 unsigned Byte = Value & 0x7f;
479 if (Value) Byte |= 0x80;
480 O << "0x" << std::hex << Byte << std::dec;
481 if (Value) O << ", ";
485 /// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
487 unsigned AsmPrinter::SizeULEB128(unsigned Value) {
491 Size += sizeof(int8_t);
496 /// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
497 /// representing a signed leb128 value.
498 void AsmPrinter::PrintSLEB128(int Value) const {
499 int Sign = Value >> (8 * sizeof(Value) - 1);
503 unsigned Byte = Value & 0x7f;
505 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
506 if (IsMore) Byte |= 0x80;
507 O << "0x" << std::hex << Byte << std::dec;
508 if (IsMore) O << ", ";
512 /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
514 unsigned AsmPrinter::SizeSLEB128(int Value) {
516 int Sign = Value >> (8 * sizeof(Value) - 1);
520 unsigned Byte = Value & 0x7f;
522 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
523 Size += sizeof(int8_t);
528 //===--------------------------------------------------------------------===//
529 // Emission and print routines
532 /// PrintHex - Print a value as a hexidecimal value.
534 void AsmPrinter::PrintHex(int Value) const {
535 O << "0x" << std::hex << Value << std::dec;
538 /// EOL - Print a newline character to asm stream. If a comment is present
539 /// then it will be printed first. Comments should not contain '\n'.
540 void AsmPrinter::EOL() const {
543 void AsmPrinter::EOL(const std::string &Comment) const {
544 if (AsmVerbose && !Comment.empty()) {
546 << TAI->getCommentString()
553 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
554 /// unsigned leb128 value.
555 void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
556 if (TAI->hasLEB128()) {
560 O << TAI->getData8bitsDirective();
565 /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
566 /// signed leb128 value.
567 void AsmPrinter::EmitSLEB128Bytes(int Value) const {
568 if (TAI->hasLEB128()) {
572 O << TAI->getData8bitsDirective();
577 /// EmitInt8 - Emit a byte directive and value.
579 void AsmPrinter::EmitInt8(int Value) const {
580 O << TAI->getData8bitsDirective();
581 PrintHex(Value & 0xFF);
584 /// EmitInt16 - Emit a short directive and value.
586 void AsmPrinter::EmitInt16(int Value) const {
587 O << TAI->getData16bitsDirective();
588 PrintHex(Value & 0xFFFF);
591 /// EmitInt32 - Emit a long directive and value.
593 void AsmPrinter::EmitInt32(int Value) const {
594 O << TAI->getData32bitsDirective();
598 /// EmitInt64 - Emit a long long directive and value.
600 void AsmPrinter::EmitInt64(uint64_t Value) const {
601 if (TAI->getData64bitsDirective()) {
602 O << TAI->getData64bitsDirective();
605 if (TM.getTargetData()->isBigEndian()) {
606 EmitInt32(unsigned(Value >> 32)); O << "\n";
607 EmitInt32(unsigned(Value));
609 EmitInt32(unsigned(Value)); O << "\n";
610 EmitInt32(unsigned(Value >> 32));
615 /// toOctal - Convert the low order bits of X into an octal digit.
617 static inline char toOctal(int X) {
621 /// printStringChar - Print a char, escaped if necessary.
623 static void printStringChar(std::ostream &O, unsigned char C) {
626 } else if (C == '\\') {
628 } else if (isprint(C)) {
632 case '\b': O << "\\b"; break;
633 case '\f': O << "\\f"; break;
634 case '\n': O << "\\n"; break;
635 case '\r': O << "\\r"; break;
636 case '\t': O << "\\t"; break;
639 O << toOctal(C >> 6);
640 O << toOctal(C >> 3);
641 O << toOctal(C >> 0);
647 /// EmitString - Emit a string with quotes and a null terminator.
648 /// Special characters are emitted properly.
649 /// \literal (Eg. '\t') \endliteral
650 void AsmPrinter::EmitString(const std::string &String) const {
651 const char* AscizDirective = TAI->getAscizDirective();
655 O << TAI->getAsciiDirective();
657 for (unsigned i = 0, N = String.size(); i < N; ++i) {
658 unsigned char C = String[i];
659 printStringChar(O, C);
668 /// EmitFile - Emit a .file directive.
669 void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
670 O << "\t.file\t" << Number << " \"";
671 for (unsigned i = 0, N = Name.size(); i < N; ++i) {
672 unsigned char C = Name[i];
673 printStringChar(O, C);
679 //===----------------------------------------------------------------------===//
681 // EmitAlignment - Emit an alignment directive to the specified power of
682 // two boundary. For example, if you pass in 3 here, you will get an 8
683 // byte alignment. If a global value is specified, and if that global has
684 // an explicit alignment requested, it will unconditionally override the
685 // alignment request. However, if ForcedAlignBits is specified, this value
686 // has final say: the ultimate alignment will be the max of ForcedAlignBits
687 // and the alignment computed with NumBits and the global.
691 // if (GV && GV->hasalignment) Align = GV->getalignment();
692 // Align = std::max(Align, ForcedAlignBits);
694 void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
695 unsigned ForcedAlignBits,
696 bool UseFillExpr) const {
697 if (GV && GV->getAlignment())
698 NumBits = Log2_32(GV->getAlignment());
699 NumBits = std::max(NumBits, ForcedAlignBits);
701 if (NumBits == 0) return; // No need to emit alignment.
702 if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
703 O << TAI->getAlignDirective() << NumBits;
705 unsigned FillValue = TAI->getTextAlignFillValue();
706 UseFillExpr &= IsInTextSection && FillValue;
707 if (UseFillExpr) O << ",0x" << std::hex << FillValue << std::dec;
712 /// EmitZeros - Emit a block of zeros.
714 void AsmPrinter::EmitZeros(uint64_t NumZeros) const {
716 if (TAI->getZeroDirective()) {
717 O << TAI->getZeroDirective() << NumZeros;
718 if (TAI->getZeroDirectiveSuffix())
719 O << TAI->getZeroDirectiveSuffix();
722 for (; NumZeros; --NumZeros)
723 O << TAI->getData8bitsDirective() << "0\n";
728 // Print out the specified constant, without a storage class. Only the
729 // constants valid in constant expressions can occur here.
730 void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
731 if (CV->isNullValue() || isa<UndefValue>(CV))
733 else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
734 O << CI->getZExtValue();
735 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
736 // This is a constant address for a global variable or function. Use the
737 // name of the variable or function as the address value, possibly
738 // decorating it with GlobalVarAddrPrefix/Suffix or
739 // FunctionAddrPrefix/Suffix (these all default to "" )
740 if (isa<Function>(GV)) {
741 O << TAI->getFunctionAddrPrefix()
742 << Mang->getValueName(GV)
743 << TAI->getFunctionAddrSuffix();
745 O << TAI->getGlobalVarAddrPrefix()
746 << Mang->getValueName(GV)
747 << TAI->getGlobalVarAddrSuffix();
749 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
750 const TargetData *TD = TM.getTargetData();
751 unsigned Opcode = CE->getOpcode();
753 case Instruction::GetElementPtr: {
754 // generate a symbolic expression for the byte address
755 const Constant *ptrVal = CE->getOperand(0);
756 SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
757 if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
761 EmitConstantValueOnly(ptrVal);
763 O << ") + " << Offset;
765 O << ") - " << -Offset;
767 EmitConstantValueOnly(ptrVal);
771 case Instruction::Trunc:
772 case Instruction::ZExt:
773 case Instruction::SExt:
774 case Instruction::FPTrunc:
775 case Instruction::FPExt:
776 case Instruction::UIToFP:
777 case Instruction::SIToFP:
778 case Instruction::FPToUI:
779 case Instruction::FPToSI:
780 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
782 case Instruction::BitCast:
783 return EmitConstantValueOnly(CE->getOperand(0));
785 case Instruction::IntToPtr: {
786 // Handle casts to pointers by changing them into casts to the appropriate
787 // integer type. This promotes constant folding and simplifies this code.
788 Constant *Op = CE->getOperand(0);
789 Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(), false/*ZExt*/);
790 return EmitConstantValueOnly(Op);
794 case Instruction::PtrToInt: {
795 // Support only foldable casts to/from pointers that can be eliminated by
796 // changing the pointer to the appropriately sized integer type.
797 Constant *Op = CE->getOperand(0);
798 const Type *Ty = CE->getType();
800 // We can emit the pointer value into this slot if the slot is an
801 // integer slot greater or equal to the size of the pointer.
802 if (Ty->isInteger() &&
803 TD->getABITypeSize(Ty) >= TD->getABITypeSize(Op->getType()))
804 return EmitConstantValueOnly(Op);
806 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
807 EmitConstantValueOnly(Op);
810 case Instruction::Add:
811 case Instruction::Sub:
812 case Instruction::And:
813 case Instruction::Or:
814 case Instruction::Xor:
816 EmitConstantValueOnly(CE->getOperand(0));
819 case Instruction::Add:
822 case Instruction::Sub:
825 case Instruction::And:
828 case Instruction::Or:
831 case Instruction::Xor:
838 EmitConstantValueOnly(CE->getOperand(1));
842 assert(0 && "Unsupported operator!");
845 assert(0 && "Unknown constant value!");
849 /// printAsCString - Print the specified array as a C compatible string, only if
850 /// the predicate isString is true.
852 static void printAsCString(std::ostream &O, const ConstantArray *CVA,
854 assert(CVA->isString() && "Array is not string compatible!");
857 for (unsigned i = 0; i != LastElt; ++i) {
859 (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
860 printStringChar(O, C);
865 /// EmitString - Emit a zero-byte-terminated string constant.
867 void AsmPrinter::EmitString(const ConstantArray *CVA) const {
868 unsigned NumElts = CVA->getNumOperands();
869 if (TAI->getAscizDirective() && NumElts &&
870 cast<ConstantInt>(CVA->getOperand(NumElts-1))->getZExtValue() == 0) {
871 O << TAI->getAscizDirective();
872 printAsCString(O, CVA, NumElts-1);
874 O << TAI->getAsciiDirective();
875 printAsCString(O, CVA, NumElts);
880 /// EmitGlobalConstant - Print a general LLVM constant to the .s file.
881 /// If Packed is false, pad to the ABI size.
882 void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
883 const TargetData *TD = TM.getTargetData();
884 unsigned Size = Packed ?
885 TD->getTypeStoreSize(CV->getType()) : TD->getABITypeSize(CV->getType());
887 if (CV->isNullValue() || isa<UndefValue>(CV)) {
890 } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
891 if (CVA->isString()) {
893 } else { // Not a string. Print the values in successive locations
894 for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
895 EmitGlobalConstant(CVA->getOperand(i), false);
898 } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
899 // Print the fields in successive locations. Pad to align if needed!
900 const StructLayout *cvsLayout = TD->getStructLayout(CVS->getType());
901 uint64_t sizeSoFar = 0;
902 for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
903 const Constant* field = CVS->getOperand(i);
905 // Check if padding is needed and insert one or more 0s.
906 uint64_t fieldSize = TD->getTypeStoreSize(field->getType());
907 uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
908 - cvsLayout->getElementOffset(i)) - fieldSize;
909 sizeSoFar += fieldSize + padSize;
911 // Now print the actual field value without ABI size padding.
912 EmitGlobalConstant(field, true);
914 // Insert padding - this may include padding to increase the size of the
915 // current field up to the ABI size (if the struct is not packed) as well
916 // as padding to ensure that the next field starts at the right offset.
919 assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
920 "Layout of constant struct may be incorrect!");
922 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
923 // FP Constants are printed as integer constants to avoid losing
925 if (CFP->getType() == Type::DoubleTy) {
926 double Val = CFP->getValueAPF().convertToDouble(); // for comment only
927 uint64_t i = CFP->getValueAPF().convertToAPInt().getZExtValue();
928 if (TAI->getData64bitsDirective())
929 O << TAI->getData64bitsDirective() << i << "\t"
930 << TAI->getCommentString() << " double value: " << Val << "\n";
931 else if (TD->isBigEndian()) {
932 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
933 << "\t" << TAI->getCommentString()
934 << " double most significant word " << Val << "\n";
935 O << TAI->getData32bitsDirective() << unsigned(i)
936 << "\t" << TAI->getCommentString()
937 << " double least significant word " << Val << "\n";
939 O << TAI->getData32bitsDirective() << unsigned(i)
940 << "\t" << TAI->getCommentString()
941 << " double least significant word " << Val << "\n";
942 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
943 << "\t" << TAI->getCommentString()
944 << " double most significant word " << Val << "\n";
947 } else if (CFP->getType() == Type::FloatTy) {
948 float Val = CFP->getValueAPF().convertToFloat(); // for comment only
949 O << TAI->getData32bitsDirective()
950 << CFP->getValueAPF().convertToAPInt().getZExtValue()
951 << "\t" << TAI->getCommentString() << " float " << Val << "\n";
953 } else if (CFP->getType() == Type::X86_FP80Ty) {
954 // all long double variants are printed as hex
955 // api needed to prevent premature destruction
956 APInt api = CFP->getValueAPF().convertToAPInt();
957 const uint64_t *p = api.getRawData();
958 APFloat DoubleVal = CFP->getValueAPF();
959 DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
960 if (TD->isBigEndian()) {
961 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
962 << "\t" << TAI->getCommentString()
963 << " long double most significant halfword of ~"
964 << DoubleVal.convertToDouble() << "\n";
965 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
966 << "\t" << TAI->getCommentString()
967 << " long double next halfword\n";
968 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
969 << "\t" << TAI->getCommentString()
970 << " long double next halfword\n";
971 O << TAI->getData16bitsDirective() << uint16_t(p[0])
972 << "\t" << TAI->getCommentString()
973 << " long double next halfword\n";
974 O << TAI->getData16bitsDirective() << uint16_t(p[1])
975 << "\t" << TAI->getCommentString()
976 << " long double least significant halfword\n";
978 O << TAI->getData16bitsDirective() << uint16_t(p[1])
979 << "\t" << TAI->getCommentString()
980 << " long double least significant halfword of ~"
981 << DoubleVal.convertToDouble() << "\n";
982 O << TAI->getData16bitsDirective() << uint16_t(p[0])
983 << "\t" << TAI->getCommentString()
984 << " long double next halfword\n";
985 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
986 << "\t" << TAI->getCommentString()
987 << " long double next halfword\n";
988 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
989 << "\t" << TAI->getCommentString()
990 << " long double next halfword\n";
991 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
992 << "\t" << TAI->getCommentString()
993 << " long double most significant halfword\n";
995 EmitZeros(Size - TD->getTypeStoreSize(Type::X86_FP80Ty));
997 } else if (CFP->getType() == Type::PPC_FP128Ty) {
998 // all long double variants are printed as hex
999 // api needed to prevent premature destruction
1000 APInt api = CFP->getValueAPF().convertToAPInt();
1001 const uint64_t *p = api.getRawData();
1002 if (TD->isBigEndian()) {
1003 O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
1004 << "\t" << TAI->getCommentString()
1005 << " long double most significant word\n";
1006 O << TAI->getData32bitsDirective() << uint32_t(p[0])
1007 << "\t" << TAI->getCommentString()
1008 << " long double next word\n";
1009 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
1010 << "\t" << TAI->getCommentString()
1011 << " long double next word\n";
1012 O << TAI->getData32bitsDirective() << uint32_t(p[1])
1013 << "\t" << TAI->getCommentString()
1014 << " long double least significant word\n";
1016 O << TAI->getData32bitsDirective() << uint32_t(p[1])
1017 << "\t" << TAI->getCommentString()
1018 << " long double least significant word\n";
1019 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
1020 << "\t" << TAI->getCommentString()
1021 << " long double next word\n";
1022 O << TAI->getData32bitsDirective() << uint32_t(p[0])
1023 << "\t" << TAI->getCommentString()
1024 << " long double next word\n";
1025 O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
1026 << "\t" << TAI->getCommentString()
1027 << " long double most significant word\n";
1030 } else assert(0 && "Floating point constant type not handled");
1031 } else if (CV->getType() == Type::Int64Ty) {
1032 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1033 uint64_t Val = CI->getZExtValue();
1035 if (TAI->getData64bitsDirective())
1036 O << TAI->getData64bitsDirective() << Val << "\n";
1037 else if (TD->isBigEndian()) {
1038 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1039 << "\t" << TAI->getCommentString()
1040 << " Double-word most significant word " << Val << "\n";
1041 O << TAI->getData32bitsDirective() << unsigned(Val)
1042 << "\t" << TAI->getCommentString()
1043 << " Double-word least significant word " << Val << "\n";
1045 O << TAI->getData32bitsDirective() << unsigned(Val)
1046 << "\t" << TAI->getCommentString()
1047 << " Double-word least significant word " << Val << "\n";
1048 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1049 << "\t" << TAI->getCommentString()
1050 << " Double-word most significant word " << Val << "\n";
1054 } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1055 const VectorType *PTy = CP->getType();
1057 for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
1058 EmitGlobalConstant(CP->getOperand(I), false);
1063 const Type *type = CV->getType();
1064 printDataDirective(type);
1065 EmitConstantValueOnly(CV);
1070 AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
1071 // Target doesn't support this yet!
1075 /// PrintSpecial - Print information related to the specified machine instr
1076 /// that is independent of the operand, and may be independent of the instr
1077 /// itself. This can be useful for portably encoding the comment character
1078 /// or other bits of target-specific knowledge into the asmstrings. The
1079 /// syntax used is ${:comment}. Targets can override this to add support
1080 /// for their own strange codes.
1081 void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) {
1082 if (!strcmp(Code, "private")) {
1083 O << TAI->getPrivateGlobalPrefix();
1084 } else if (!strcmp(Code, "comment")) {
1085 O << TAI->getCommentString();
1086 } else if (!strcmp(Code, "uid")) {
1087 // Assign a unique ID to this machine instruction.
1088 static const MachineInstr *LastMI = 0;
1089 static const Function *F = 0;
1090 static unsigned Counter = 0U-1;
1092 // Comparing the address of MI isn't sufficient, because machineinstrs may
1093 // be allocated to the same address across functions.
1094 const Function *ThisF = MI->getParent()->getParent()->getFunction();
1096 // If this is a new machine instruction, bump the counter.
1097 if (LastMI != MI || F != ThisF) {
1104 cerr << "Unknown special formatter '" << Code
1105 << "' for machine instr: " << *MI;
1111 /// printInlineAsm - This method formats and prints the specified machine
1112 /// instruction that is an inline asm.
1113 void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
1114 unsigned NumOperands = MI->getNumOperands();
1116 // Count the number of register definitions.
1117 unsigned NumDefs = 0;
1118 for (; MI->getOperand(NumDefs).isRegister() && MI->getOperand(NumDefs).isDef();
1120 assert(NumDefs != NumOperands-1 && "No asm string?");
1122 assert(MI->getOperand(NumDefs).isExternalSymbol() && "No asm string?");
1124 // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
1125 const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
1127 // If this asmstr is empty, just print the #APP/#NOAPP markers.
1128 // These are useful to see where empty asm's wound up.
1129 if (AsmStr[0] == 0) {
1130 O << TAI->getInlineAsmStart() << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1134 O << TAI->getInlineAsmStart() << "\n\t";
1136 // The variant of the current asmprinter.
1137 int AsmPrinterVariant = TAI->getAssemblerDialect();
1139 int CurVariant = -1; // The number of the {.|.|.} region we are in.
1140 const char *LastEmitted = AsmStr; // One past the last character emitted.
1142 while (*LastEmitted) {
1143 switch (*LastEmitted) {
1145 // Not a special case, emit the string section literally.
1146 const char *LiteralEnd = LastEmitted+1;
1147 while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
1148 *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
1150 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1151 O.write(LastEmitted, LiteralEnd-LastEmitted);
1152 LastEmitted = LiteralEnd;
1156 ++LastEmitted; // Consume newline character.
1157 O << "\n"; // Indent code with newline.
1160 ++LastEmitted; // Consume '$' character.
1164 switch (*LastEmitted) {
1165 default: Done = false; break;
1166 case '$': // $$ -> $
1167 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1169 ++LastEmitted; // Consume second '$' character.
1171 case '(': // $( -> same as GCC's { character.
1172 ++LastEmitted; // Consume '(' character.
1173 if (CurVariant != -1) {
1174 cerr << "Nested variants found in inline asm string: '"
1178 CurVariant = 0; // We're in the first variant now.
1181 ++LastEmitted; // consume '|' character.
1182 if (CurVariant == -1) {
1183 cerr << "Found '|' character outside of variant in inline asm "
1184 << "string: '" << AsmStr << "'\n";
1187 ++CurVariant; // We're in the next variant.
1189 case ')': // $) -> same as GCC's } char.
1190 ++LastEmitted; // consume ')' character.
1191 if (CurVariant == -1) {
1192 cerr << "Found '}' character outside of variant in inline asm "
1193 << "string: '" << AsmStr << "'\n";
1201 bool HasCurlyBraces = false;
1202 if (*LastEmitted == '{') { // ${variable}
1203 ++LastEmitted; // Consume '{' character.
1204 HasCurlyBraces = true;
1207 const char *IDStart = LastEmitted;
1210 long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
1211 if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
1212 cerr << "Bad $ operand number in inline asm string: '"
1216 LastEmitted = IDEnd;
1218 char Modifier[2] = { 0, 0 };
1220 if (HasCurlyBraces) {
1221 // If we have curly braces, check for a modifier character. This
1222 // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
1223 if (*LastEmitted == ':') {
1224 ++LastEmitted; // Consume ':' character.
1225 if (*LastEmitted == 0) {
1226 cerr << "Bad ${:} expression in inline asm string: '"
1231 Modifier[0] = *LastEmitted;
1232 ++LastEmitted; // Consume modifier character.
1235 if (*LastEmitted != '}') {
1236 cerr << "Bad ${} expression in inline asm string: '"
1240 ++LastEmitted; // Consume '}' character.
1243 if ((unsigned)Val >= NumOperands-1) {
1244 cerr << "Invalid $ operand number in inline asm string: '"
1249 // Okay, we finally have a value number. Ask the target to print this
1251 if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
1256 // Scan to find the machine operand number for the operand.
1257 for (; Val; --Val) {
1258 if (OpNo >= MI->getNumOperands()) break;
1259 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1260 OpNo += (OpFlags >> 3) + 1;
1263 if (OpNo >= MI->getNumOperands()) {
1266 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1267 ++OpNo; // Skip over the ID number.
1269 if (Modifier[0]=='l') // labels are target independent
1270 printBasicBlockLabel(MI->getOperand(OpNo).getMBB(),
1271 false, false, false);
1273 AsmPrinter *AP = const_cast<AsmPrinter*>(this);
1274 if ((OpFlags & 7) == 4 /*ADDR MODE*/) {
1275 Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
1276 Modifier[0] ? Modifier : 0);
1278 Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
1279 Modifier[0] ? Modifier : 0);
1284 cerr << "Invalid operand found in inline asm: '"
1294 O << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1297 /// printLabel - This method prints a local label used by debug and
1298 /// exception handling tables.
1299 void AsmPrinter::printLabel(const MachineInstr *MI) const {
1300 O << TAI->getPrivateGlobalPrefix()
1301 << "label" << MI->getOperand(0).getImm() << ":\n";
1304 void AsmPrinter::printLabel(unsigned Id) const {
1305 O << TAI->getPrivateGlobalPrefix() << "label" << Id << ":\n";
1308 /// printDeclare - This method prints a local variable declaration used by
1310 /// FIXME: It doesn't really print anything rather it inserts a DebugVariable
1311 /// entry into dwarf table.
1312 void AsmPrinter::printDeclare(const MachineInstr *MI) const {
1313 int FI = MI->getOperand(0).getIndex();
1314 GlobalValue *GV = MI->getOperand(1).getGlobal();
1315 MMI->RecordVariable(GV, FI);
1318 /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
1319 /// instruction, using the specified assembler variant. Targets should
1320 /// overried this to format as appropriate.
1321 bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
1322 unsigned AsmVariant, const char *ExtraCode) {
1323 // Target doesn't support this yet!
1327 bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
1328 unsigned AsmVariant,
1329 const char *ExtraCode) {
1330 // Target doesn't support this yet!
1334 /// printBasicBlockLabel - This method prints the label for the specified
1335 /// MachineBasicBlock
1336 void AsmPrinter::printBasicBlockLabel(const MachineBasicBlock *MBB,
1339 bool printComment) const {
1341 unsigned Align = MBB->getAlignment();
1343 EmitAlignment(Log2_32(Align));
1346 O << TAI->getPrivateGlobalPrefix() << "BB" << getFunctionNumber() << "_"
1347 << MBB->getNumber();
1350 if (printComment && MBB->getBasicBlock())
1351 O << '\t' << TAI->getCommentString() << ' '
1352 << MBB->getBasicBlock()->getName();
1355 /// printPICJumpTableSetLabel - This method prints a set label for the
1356 /// specified MachineBasicBlock for a jumptable entry.
1357 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
1358 const MachineBasicBlock *MBB) const {
1359 if (!TAI->getSetDirective())
1362 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1363 << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
1364 printBasicBlockLabel(MBB, false, false, false);
1365 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1366 << '_' << uid << '\n';
1369 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
1370 const MachineBasicBlock *MBB) const {
1371 if (!TAI->getSetDirective())
1374 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1375 << getFunctionNumber() << '_' << uid << '_' << uid2
1376 << "_set_" << MBB->getNumber() << ',';
1377 printBasicBlockLabel(MBB, false, false, false);
1378 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1379 << '_' << uid << '_' << uid2 << '\n';
1382 /// printDataDirective - This method prints the asm directive for the
1384 void AsmPrinter::printDataDirective(const Type *type) {
1385 const TargetData *TD = TM.getTargetData();
1386 switch (type->getTypeID()) {
1387 case Type::IntegerTyID: {
1388 unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
1390 O << TAI->getData8bitsDirective();
1391 else if (BitWidth <= 16)
1392 O << TAI->getData16bitsDirective();
1393 else if (BitWidth <= 32)
1394 O << TAI->getData32bitsDirective();
1395 else if (BitWidth <= 64) {
1396 assert(TAI->getData64bitsDirective() &&
1397 "Target cannot handle 64-bit constant exprs!");
1398 O << TAI->getData64bitsDirective();
1402 case Type::PointerTyID:
1403 if (TD->getPointerSize() == 8) {
1404 assert(TAI->getData64bitsDirective() &&
1405 "Target cannot handle 64-bit pointer exprs!");
1406 O << TAI->getData64bitsDirective();
1408 O << TAI->getData32bitsDirective();
1411 case Type::FloatTyID: case Type::DoubleTyID:
1412 case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
1413 assert (0 && "Should have already output floating point constant.");
1415 assert (0 && "Can't handle printing this type of thing");