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)
45 std::string AsmPrinter::getSectionForFunction(const Function &F) const {
46 return TAI->getTextSection();
50 /// SwitchToTextSection - Switch to the specified text section of the executable
51 /// if we are not already in it!
53 void AsmPrinter::SwitchToTextSection(const char *NewSection,
54 const GlobalValue *GV) {
56 if (GV && GV->hasSection())
57 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
61 // If we're already in this section, we're done.
62 if (CurrentSection == NS) return;
64 // Close the current section, if applicable.
65 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
66 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
70 if (!CurrentSection.empty())
71 O << CurrentSection << TAI->getTextSectionStartSuffix() << '\n';
74 /// SwitchToDataSection - Switch to the specified data section of the executable
75 /// if we are not already in it!
77 void AsmPrinter::SwitchToDataSection(const char *NewSection,
78 const GlobalValue *GV) {
80 if (GV && GV->hasSection())
81 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
85 // If we're already in this section, we're done.
86 if (CurrentSection == NS) return;
88 // Close the current section, if applicable.
89 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
90 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
94 if (!CurrentSection.empty())
95 O << CurrentSection << TAI->getDataSectionStartSuffix() << '\n';
99 void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
100 MachineFunctionPass::getAnalysisUsage(AU);
101 AU.addRequired<CollectorModuleMetadata>();
104 bool AsmPrinter::doInitialization(Module &M) {
105 Mang = new Mangler(M, TAI->getGlobalPrefix());
107 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
108 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
109 for (CollectorModuleMetadata::iterator I = CMM->begin(),
110 E = CMM->end(); I != E; ++I)
111 (*I)->beginAssembly(O, *this, *TAI);
113 if (!M.getModuleInlineAsm().empty())
114 O << TAI->getCommentString() << " Start of file scope inline assembly\n"
115 << M.getModuleInlineAsm()
116 << "\n" << TAI->getCommentString()
117 << " End of file scope inline assembly\n";
119 SwitchToDataSection(""); // Reset back to no section.
121 if (MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>()) {
122 MMI->AnalyzeModule(M);
128 bool AsmPrinter::doFinalization(Module &M) {
129 if (TAI->getWeakRefDirective()) {
130 if (!ExtWeakSymbols.empty())
131 SwitchToDataSection("");
133 for (std::set<const GlobalValue*>::iterator i = ExtWeakSymbols.begin(),
134 e = ExtWeakSymbols.end(); i != e; ++i) {
135 const GlobalValue *GV = *i;
136 std::string Name = Mang->getValueName(GV);
137 O << TAI->getWeakRefDirective() << Name << "\n";
141 if (TAI->getSetDirective()) {
142 if (!M.alias_empty())
143 SwitchToTextSection(TAI->getTextSection());
146 for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
148 std::string Name = Mang->getValueName(I);
151 const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
152 Target = Mang->getValueName(GV);
154 if (I->hasExternalLinkage() || !TAI->getWeakRefDirective())
155 O << "\t.globl\t" << Name << "\n";
156 else if (I->hasWeakLinkage())
157 O << TAI->getWeakRefDirective() << Name << "\n";
158 else if (!I->hasInternalLinkage())
159 assert(0 && "Invalid alias linkage");
161 O << TAI->getSetDirective() << Name << ", " << Target << "\n";
163 // If the aliasee has external weak linkage it can be referenced only by
164 // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
165 // weak reference in such case.
166 if (GV->hasExternalWeakLinkage())
167 if (TAI->getWeakRefDirective())
168 O << TAI->getWeakRefDirective() << Target << "\n";
170 O << "\t.globl\t" << Target << "\n";
174 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
175 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
176 for (CollectorModuleMetadata::iterator I = CMM->end(),
177 E = CMM->begin(); I != E; )
178 (*--I)->finishAssembly(O, *this, *TAI);
180 delete Mang; Mang = 0;
184 std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
185 assert(MF && "No machine function?");
186 return Mang->makeNameProper(MF->getFunction()->getName() + ".eh",
187 TAI->getGlobalPrefix());
190 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
191 // What's my mangled name?
192 CurrentFnName = Mang->getValueName(MF.getFunction());
193 IncrementFunctionNumber();
196 /// EmitConstantPool - Print to the current output stream assembly
197 /// representations of the constants in the constant pool MCP. This is
198 /// used to print out constants which have been "spilled to memory" by
199 /// the code generator.
201 void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
202 const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
203 if (CP.empty()) return;
205 // Some targets require 4-, 8-, and 16- byte constant literals to be placed
206 // in special sections.
207 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > FourByteCPs;
208 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > EightByteCPs;
209 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > SixteenByteCPs;
210 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > OtherCPs;
211 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > TargetCPs;
212 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
213 MachineConstantPoolEntry CPE = CP[i];
214 const Type *Ty = CPE.getType();
215 if (TAI->getFourByteConstantSection() &&
216 TM.getTargetData()->getABITypeSize(Ty) == 4)
217 FourByteCPs.push_back(std::make_pair(CPE, i));
218 else if (TAI->getEightByteConstantSection() &&
219 TM.getTargetData()->getABITypeSize(Ty) == 8)
220 EightByteCPs.push_back(std::make_pair(CPE, i));
221 else if (TAI->getSixteenByteConstantSection() &&
222 TM.getTargetData()->getABITypeSize(Ty) == 16)
223 SixteenByteCPs.push_back(std::make_pair(CPE, i));
225 OtherCPs.push_back(std::make_pair(CPE, i));
228 unsigned Alignment = MCP->getConstantPoolAlignment();
229 EmitConstantPool(Alignment, TAI->getFourByteConstantSection(), FourByteCPs);
230 EmitConstantPool(Alignment, TAI->getEightByteConstantSection(), EightByteCPs);
231 EmitConstantPool(Alignment, TAI->getSixteenByteConstantSection(),
233 EmitConstantPool(Alignment, TAI->getConstantPoolSection(), OtherCPs);
236 void AsmPrinter::EmitConstantPool(unsigned Alignment, const char *Section,
237 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > &CP) {
238 if (CP.empty()) return;
240 SwitchToDataSection(Section);
241 EmitAlignment(Alignment);
242 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
243 O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
244 << CP[i].second << ":\t\t\t\t\t" << TAI->getCommentString() << " ";
245 WriteTypeSymbolic(O, CP[i].first.getType(), 0) << '\n';
246 if (CP[i].first.isMachineConstantPoolEntry())
247 EmitMachineConstantPoolValue(CP[i].first.Val.MachineCPVal);
249 EmitGlobalConstant(CP[i].first.Val.ConstVal);
251 const Type *Ty = CP[i].first.getType();
253 TM.getTargetData()->getABITypeSize(Ty);
254 unsigned ValEnd = CP[i].first.getOffset() + EntSize;
255 // Emit inter-object padding for alignment.
256 EmitZeros(CP[i+1].first.getOffset()-ValEnd);
261 /// EmitJumpTableInfo - Print assembly representations of the jump tables used
262 /// by the current function to the current output stream.
264 void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
265 MachineFunction &MF) {
266 const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
267 if (JT.empty()) return;
269 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
271 // Pick the directive to use to print the jump table entries, and switch to
272 // the appropriate section.
273 TargetLowering *LoweringInfo = TM.getTargetLowering();
275 const char* JumpTableDataSection = TAI->getJumpTableDataSection();
276 if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
277 !JumpTableDataSection) {
278 // In PIC mode, we need to emit the jump table to the same section as the
279 // function body itself, otherwise the label differences won't make sense.
280 // We should also do if the section name is NULL.
281 const Function *F = MF.getFunction();
282 SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
284 SwitchToDataSection(JumpTableDataSection);
287 EmitAlignment(Log2_32(MJTI->getAlignment()));
289 for (unsigned i = 0, e = JT.size(); i != e; ++i) {
290 const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
292 // If this jump table was deleted, ignore it.
293 if (JTBBs.empty()) continue;
295 // For PIC codegen, if possible we want to use the SetDirective to reduce
296 // the number of relocations the assembler will generate for the jump table.
297 // Set directives are all printed before the jump table itself.
298 SmallPtrSet<MachineBasicBlock*, 16> EmittedSets;
299 if (TAI->getSetDirective() && IsPic)
300 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
301 if (EmittedSets.insert(JTBBs[ii]))
302 printPICJumpTableSetLabel(i, JTBBs[ii]);
304 // On some targets (e.g. darwin) we want to emit two consequtive labels
305 // before each jump table. The first label is never referenced, but tells
306 // the assembler and linker the extents of the jump table object. The
307 // second label is actually referenced by the code.
308 if (const char *JTLabelPrefix = TAI->getJumpTableSpecialLabelPrefix())
309 O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
311 O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
312 << '_' << i << ":\n";
314 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
315 printPICJumpTableEntry(MJTI, JTBBs[ii], i);
321 void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
322 const MachineBasicBlock *MBB,
323 unsigned uid) const {
324 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
326 // Use JumpTableDirective otherwise honor the entry size from the jump table
328 const char *JTEntryDirective = TAI->getJumpTableDirective();
329 bool HadJTEntryDirective = JTEntryDirective != NULL;
330 if (!HadJTEntryDirective) {
331 JTEntryDirective = MJTI->getEntrySize() == 4 ?
332 TAI->getData32bitsDirective() : TAI->getData64bitsDirective();
335 O << JTEntryDirective << ' ';
337 // If we have emitted set directives for the jump table entries, print
338 // them rather than the entries themselves. If we're emitting PIC, then
339 // emit the table entries as differences between two text section labels.
340 // If we're emitting non-PIC code, then emit the entries as direct
341 // references to the target basic blocks.
343 if (TAI->getSetDirective()) {
344 O << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
345 << '_' << uid << "_set_" << MBB->getNumber();
347 printBasicBlockLabel(MBB, false, false);
348 // If the arch uses custom Jump Table directives, don't calc relative to
350 if (!HadJTEntryDirective)
351 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
352 << getFunctionNumber() << '_' << uid;
355 printBasicBlockLabel(MBB, false, false);
360 /// EmitSpecialLLVMGlobal - Check to see if the specified global is a
361 /// special global used by LLVM. If so, emit it and return true, otherwise
362 /// do nothing and return false.
363 bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
364 if (GV->getName() == "llvm.used") {
365 if (TAI->getUsedDirective() != 0) // No need to emit this at all.
366 EmitLLVMUsedList(GV->getInitializer());
370 // Ignore debug and non-emitted data.
371 if (GV->getSection() == "llvm.metadata") return true;
373 if (!GV->hasAppendingLinkage()) return false;
375 assert(GV->hasInitializer() && "Not a special LLVM global!");
377 const TargetData *TD = TM.getTargetData();
378 unsigned Align = Log2_32(TD->getPointerPrefAlignment());
379 if (GV->getName() == "llvm.global_ctors" && GV->use_empty()) {
380 SwitchToDataSection(TAI->getStaticCtorsSection());
381 EmitAlignment(Align, 0);
382 EmitXXStructorList(GV->getInitializer());
386 if (GV->getName() == "llvm.global_dtors" && GV->use_empty()) {
387 SwitchToDataSection(TAI->getStaticDtorsSection());
388 EmitAlignment(Align, 0);
389 EmitXXStructorList(GV->getInitializer());
396 /// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
397 /// global in the specified llvm.used list as being used with this directive.
398 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
399 const char *Directive = TAI->getUsedDirective();
401 // Should be an array of 'sbyte*'.
402 ConstantArray *InitList = dyn_cast<ConstantArray>(List);
403 if (InitList == 0) return;
405 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
407 EmitConstantValueOnly(InitList->getOperand(i));
412 /// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
413 /// function pointers, ignoring the init priority.
414 void AsmPrinter::EmitXXStructorList(Constant *List) {
415 // Should be an array of '{ int, void ()* }' structs. The first value is the
416 // init priority, which we ignore.
417 if (!isa<ConstantArray>(List)) return;
418 ConstantArray *InitList = cast<ConstantArray>(List);
419 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
420 if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
421 if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
423 if (CS->getOperand(1)->isNullValue())
424 return; // Found a null terminator, exit printing.
425 // Emit the function pointer.
426 EmitGlobalConstant(CS->getOperand(1));
430 /// getGlobalLinkName - Returns the asm/link name of of the specified
431 /// global variable. Should be overridden by each target asm printer to
432 /// generate the appropriate value.
433 const std::string AsmPrinter::getGlobalLinkName(const GlobalVariable *GV) const{
434 std::string LinkName;
436 if (isa<Function>(GV)) {
437 LinkName += TAI->getFunctionAddrPrefix();
438 LinkName += Mang->getValueName(GV);
439 LinkName += TAI->getFunctionAddrSuffix();
441 LinkName += TAI->getGlobalVarAddrPrefix();
442 LinkName += Mang->getValueName(GV);
443 LinkName += TAI->getGlobalVarAddrSuffix();
449 /// EmitExternalGlobal - Emit the external reference to a global variable.
450 /// Should be overridden if an indirect reference should be used.
451 void AsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
452 O << getGlobalLinkName(GV);
457 //===----------------------------------------------------------------------===//
458 /// LEB 128 number encoding.
460 /// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
461 /// representing an unsigned leb128 value.
462 void AsmPrinter::PrintULEB128(unsigned Value) const {
464 unsigned Byte = Value & 0x7f;
466 if (Value) Byte |= 0x80;
467 O << "0x" << std::hex << Byte << std::dec;
468 if (Value) O << ", ";
472 /// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
474 unsigned AsmPrinter::SizeULEB128(unsigned Value) {
478 Size += sizeof(int8_t);
483 /// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
484 /// representing a signed leb128 value.
485 void AsmPrinter::PrintSLEB128(int Value) const {
486 int Sign = Value >> (8 * sizeof(Value) - 1);
490 unsigned Byte = Value & 0x7f;
492 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
493 if (IsMore) Byte |= 0x80;
494 O << "0x" << std::hex << Byte << std::dec;
495 if (IsMore) O << ", ";
499 /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
501 unsigned AsmPrinter::SizeSLEB128(int Value) {
503 int Sign = Value >> (8 * sizeof(Value) - 1);
507 unsigned Byte = Value & 0x7f;
509 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
510 Size += sizeof(int8_t);
515 //===--------------------------------------------------------------------===//
516 // Emission and print routines
519 /// PrintHex - Print a value as a hexidecimal value.
521 void AsmPrinter::PrintHex(int Value) const {
522 O << "0x" << std::hex << Value << std::dec;
525 /// EOL - Print a newline character to asm stream. If a comment is present
526 /// then it will be printed first. Comments should not contain '\n'.
527 void AsmPrinter::EOL() const {
530 void AsmPrinter::EOL(const std::string &Comment) const {
531 if (AsmVerbose && !Comment.empty()) {
533 << TAI->getCommentString()
540 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
541 /// unsigned leb128 value.
542 void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
543 if (TAI->hasLEB128()) {
547 O << TAI->getData8bitsDirective();
552 /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
553 /// signed leb128 value.
554 void AsmPrinter::EmitSLEB128Bytes(int Value) const {
555 if (TAI->hasLEB128()) {
559 O << TAI->getData8bitsDirective();
564 /// EmitInt8 - Emit a byte directive and value.
566 void AsmPrinter::EmitInt8(int Value) const {
567 O << TAI->getData8bitsDirective();
568 PrintHex(Value & 0xFF);
571 /// EmitInt16 - Emit a short directive and value.
573 void AsmPrinter::EmitInt16(int Value) const {
574 O << TAI->getData16bitsDirective();
575 PrintHex(Value & 0xFFFF);
578 /// EmitInt32 - Emit a long directive and value.
580 void AsmPrinter::EmitInt32(int Value) const {
581 O << TAI->getData32bitsDirective();
585 /// EmitInt64 - Emit a long long directive and value.
587 void AsmPrinter::EmitInt64(uint64_t Value) const {
588 if (TAI->getData64bitsDirective()) {
589 O << TAI->getData64bitsDirective();
592 if (TM.getTargetData()->isBigEndian()) {
593 EmitInt32(unsigned(Value >> 32)); O << "\n";
594 EmitInt32(unsigned(Value));
596 EmitInt32(unsigned(Value)); O << "\n";
597 EmitInt32(unsigned(Value >> 32));
602 /// toOctal - Convert the low order bits of X into an octal digit.
604 static inline char toOctal(int X) {
608 /// printStringChar - Print a char, escaped if necessary.
610 static void printStringChar(std::ostream &O, unsigned char C) {
613 } else if (C == '\\') {
615 } else if (isprint(C)) {
619 case '\b': O << "\\b"; break;
620 case '\f': O << "\\f"; break;
621 case '\n': O << "\\n"; break;
622 case '\r': O << "\\r"; break;
623 case '\t': O << "\\t"; break;
626 O << toOctal(C >> 6);
627 O << toOctal(C >> 3);
628 O << toOctal(C >> 0);
634 /// EmitString - Emit a string with quotes and a null terminator.
635 /// Special characters are emitted properly.
636 /// \literal (Eg. '\t') \endliteral
637 void AsmPrinter::EmitString(const std::string &String) const {
638 const char* AscizDirective = TAI->getAscizDirective();
642 O << TAI->getAsciiDirective();
644 for (unsigned i = 0, N = String.size(); i < N; ++i) {
645 unsigned char C = String[i];
646 printStringChar(O, C);
655 /// EmitFile - Emit a .file directive.
656 void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
657 O << "\t.file\t" << Number << " \"";
658 for (unsigned i = 0, N = Name.size(); i < N; ++i) {
659 unsigned char C = Name[i];
660 printStringChar(O, C);
666 //===----------------------------------------------------------------------===//
668 // EmitAlignment - Emit an alignment directive to the specified power of
669 // two boundary. For example, if you pass in 3 here, you will get an 8
670 // byte alignment. If a global value is specified, and if that global has
671 // an explicit alignment requested, it will unconditionally override the
672 // alignment request. However, if ForcedAlignBits is specified, this value
673 // has final say: the ultimate alignment will be the max of ForcedAlignBits
674 // and the alignment computed with NumBits and the global.
678 // if (GV && GV->hasalignment) Align = GV->getalignment();
679 // Align = std::max(Align, ForcedAlignBits);
681 void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
682 unsigned ForcedAlignBits, bool UseFillExpr,
683 unsigned FillValue) const {
684 if (GV && GV->getAlignment())
685 NumBits = Log2_32(GV->getAlignment());
686 NumBits = std::max(NumBits, ForcedAlignBits);
688 if (NumBits == 0) return; // No need to emit alignment.
689 if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
690 O << TAI->getAlignDirective() << NumBits;
691 if (UseFillExpr) O << ",0x" << std::hex << FillValue << std::dec;
696 /// EmitZeros - Emit a block of zeros.
698 void AsmPrinter::EmitZeros(uint64_t NumZeros) const {
700 if (TAI->getZeroDirective()) {
701 O << TAI->getZeroDirective() << NumZeros;
702 if (TAI->getZeroDirectiveSuffix())
703 O << TAI->getZeroDirectiveSuffix();
706 for (; NumZeros; --NumZeros)
707 O << TAI->getData8bitsDirective() << "0\n";
712 // Print out the specified constant, without a storage class. Only the
713 // constants valid in constant expressions can occur here.
714 void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
715 if (CV->isNullValue() || isa<UndefValue>(CV))
717 else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
718 O << CI->getZExtValue();
719 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
720 // This is a constant address for a global variable or function. Use the
721 // name of the variable or function as the address value, possibly
722 // decorating it with GlobalVarAddrPrefix/Suffix or
723 // FunctionAddrPrefix/Suffix (these all default to "" )
724 if (isa<Function>(GV)) {
725 O << TAI->getFunctionAddrPrefix()
726 << Mang->getValueName(GV)
727 << TAI->getFunctionAddrSuffix();
729 O << TAI->getGlobalVarAddrPrefix()
730 << Mang->getValueName(GV)
731 << TAI->getGlobalVarAddrSuffix();
733 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
734 const TargetData *TD = TM.getTargetData();
735 unsigned Opcode = CE->getOpcode();
737 case Instruction::GetElementPtr: {
738 // generate a symbolic expression for the byte address
739 const Constant *ptrVal = CE->getOperand(0);
740 SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
741 if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
745 EmitConstantValueOnly(ptrVal);
747 O << ") + " << Offset;
749 O << ") - " << -Offset;
751 EmitConstantValueOnly(ptrVal);
755 case Instruction::Trunc:
756 case Instruction::ZExt:
757 case Instruction::SExt:
758 case Instruction::FPTrunc:
759 case Instruction::FPExt:
760 case Instruction::UIToFP:
761 case Instruction::SIToFP:
762 case Instruction::FPToUI:
763 case Instruction::FPToSI:
764 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
766 case Instruction::BitCast:
767 return EmitConstantValueOnly(CE->getOperand(0));
769 case Instruction::IntToPtr: {
770 // Handle casts to pointers by changing them into casts to the appropriate
771 // integer type. This promotes constant folding and simplifies this code.
772 Constant *Op = CE->getOperand(0);
773 Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(), false/*ZExt*/);
774 return EmitConstantValueOnly(Op);
778 case Instruction::PtrToInt: {
779 // Support only foldable casts to/from pointers that can be eliminated by
780 // changing the pointer to the appropriately sized integer type.
781 Constant *Op = CE->getOperand(0);
782 const Type *Ty = CE->getType();
784 // We can emit the pointer value into this slot if the slot is an
785 // integer slot greater or equal to the size of the pointer.
786 if (Ty->isInteger() &&
787 TD->getABITypeSize(Ty) >= TD->getABITypeSize(Op->getType()))
788 return EmitConstantValueOnly(Op);
790 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
791 EmitConstantValueOnly(Op);
794 case Instruction::Add:
795 case Instruction::Sub:
796 case Instruction::And:
797 case Instruction::Or:
798 case Instruction::Xor:
800 EmitConstantValueOnly(CE->getOperand(0));
803 case Instruction::Add:
806 case Instruction::Sub:
809 case Instruction::And:
812 case Instruction::Or:
815 case Instruction::Xor:
822 EmitConstantValueOnly(CE->getOperand(1));
826 assert(0 && "Unsupported operator!");
829 assert(0 && "Unknown constant value!");
833 /// printAsCString - Print the specified array as a C compatible string, only if
834 /// the predicate isString is true.
836 static void printAsCString(std::ostream &O, const ConstantArray *CVA,
838 assert(CVA->isString() && "Array is not string compatible!");
841 for (unsigned i = 0; i != LastElt; ++i) {
843 (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
844 printStringChar(O, C);
849 /// EmitString - Emit a zero-byte-terminated string constant.
851 void AsmPrinter::EmitString(const ConstantArray *CVA) const {
852 unsigned NumElts = CVA->getNumOperands();
853 if (TAI->getAscizDirective() && NumElts &&
854 cast<ConstantInt>(CVA->getOperand(NumElts-1))->getZExtValue() == 0) {
855 O << TAI->getAscizDirective();
856 printAsCString(O, CVA, NumElts-1);
858 O << TAI->getAsciiDirective();
859 printAsCString(O, CVA, NumElts);
864 /// EmitGlobalConstant - Print a general LLVM constant to the .s file.
865 /// If Packed is false, pad to the ABI size.
866 void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
867 const TargetData *TD = TM.getTargetData();
868 unsigned Size = Packed ?
869 TD->getTypeStoreSize(CV->getType()) : TD->getABITypeSize(CV->getType());
871 if (CV->isNullValue() || isa<UndefValue>(CV)) {
874 } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
875 if (CVA->isString()) {
877 } else { // Not a string. Print the values in successive locations
878 for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
879 EmitGlobalConstant(CVA->getOperand(i), false);
882 } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
883 // Print the fields in successive locations. Pad to align if needed!
884 const StructLayout *cvsLayout = TD->getStructLayout(CVS->getType());
885 uint64_t sizeSoFar = 0;
886 for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
887 const Constant* field = CVS->getOperand(i);
889 // Check if padding is needed and insert one or more 0s.
890 uint64_t fieldSize = TD->getTypeStoreSize(field->getType());
891 uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
892 - cvsLayout->getElementOffset(i)) - fieldSize;
893 sizeSoFar += fieldSize + padSize;
895 // Now print the actual field value without ABI size padding.
896 EmitGlobalConstant(field, true);
898 // Insert padding - this may include padding to increase the size of the
899 // current field up to the ABI size (if the struct is not packed) as well
900 // as padding to ensure that the next field starts at the right offset.
903 assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
904 "Layout of constant struct may be incorrect!");
906 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
907 // FP Constants are printed as integer constants to avoid losing
909 if (CFP->getType() == Type::DoubleTy) {
910 double Val = CFP->getValueAPF().convertToDouble(); // for comment only
911 uint64_t i = CFP->getValueAPF().convertToAPInt().getZExtValue();
912 if (TAI->getData64bitsDirective())
913 O << TAI->getData64bitsDirective() << i << "\t"
914 << TAI->getCommentString() << " double value: " << Val << "\n";
915 else if (TD->isBigEndian()) {
916 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
917 << "\t" << TAI->getCommentString()
918 << " double most significant word " << Val << "\n";
919 O << TAI->getData32bitsDirective() << unsigned(i)
920 << "\t" << TAI->getCommentString()
921 << " double least significant word " << Val << "\n";
923 O << TAI->getData32bitsDirective() << unsigned(i)
924 << "\t" << TAI->getCommentString()
925 << " double least significant word " << Val << "\n";
926 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
927 << "\t" << TAI->getCommentString()
928 << " double most significant word " << Val << "\n";
931 } else if (CFP->getType() == Type::FloatTy) {
932 float Val = CFP->getValueAPF().convertToFloat(); // for comment only
933 O << TAI->getData32bitsDirective()
934 << CFP->getValueAPF().convertToAPInt().getZExtValue()
935 << "\t" << TAI->getCommentString() << " float " << Val << "\n";
937 } else if (CFP->getType() == Type::X86_FP80Ty) {
938 // all long double variants are printed as hex
939 // api needed to prevent premature destruction
940 APInt api = CFP->getValueAPF().convertToAPInt();
941 const uint64_t *p = api.getRawData();
942 APFloat DoubleVal = CFP->getValueAPF();
943 DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
944 if (TD->isBigEndian()) {
945 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
946 << "\t" << TAI->getCommentString()
947 << " long double most significant halfword of ~"
948 << DoubleVal.convertToDouble() << "\n";
949 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
950 << "\t" << TAI->getCommentString()
951 << " long double next halfword\n";
952 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
953 << "\t" << TAI->getCommentString()
954 << " long double next halfword\n";
955 O << TAI->getData16bitsDirective() << uint16_t(p[0])
956 << "\t" << TAI->getCommentString()
957 << " long double next halfword\n";
958 O << TAI->getData16bitsDirective() << uint16_t(p[1])
959 << "\t" << TAI->getCommentString()
960 << " long double least significant halfword\n";
962 O << TAI->getData16bitsDirective() << uint16_t(p[1])
963 << "\t" << TAI->getCommentString()
964 << " long double least significant halfword of ~"
965 << DoubleVal.convertToDouble() << "\n";
966 O << TAI->getData16bitsDirective() << uint16_t(p[0])
967 << "\t" << TAI->getCommentString()
968 << " long double next halfword\n";
969 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
970 << "\t" << TAI->getCommentString()
971 << " long double next halfword\n";
972 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
973 << "\t" << TAI->getCommentString()
974 << " long double next halfword\n";
975 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
976 << "\t" << TAI->getCommentString()
977 << " long double most significant halfword\n";
979 EmitZeros(Size - TD->getTypeStoreSize(Type::X86_FP80Ty));
981 } else if (CFP->getType() == Type::PPC_FP128Ty) {
982 // all long double variants are printed as hex
983 // api needed to prevent premature destruction
984 APInt api = CFP->getValueAPF().convertToAPInt();
985 const uint64_t *p = api.getRawData();
986 if (TD->isBigEndian()) {
987 O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
988 << "\t" << TAI->getCommentString()
989 << " long double most significant word\n";
990 O << TAI->getData32bitsDirective() << uint32_t(p[0])
991 << "\t" << TAI->getCommentString()
992 << " long double next word\n";
993 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
994 << "\t" << TAI->getCommentString()
995 << " long double next word\n";
996 O << TAI->getData32bitsDirective() << uint32_t(p[1])
997 << "\t" << TAI->getCommentString()
998 << " long double least significant word\n";
1000 O << TAI->getData32bitsDirective() << uint32_t(p[1])
1001 << "\t" << TAI->getCommentString()
1002 << " long double least significant word\n";
1003 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
1004 << "\t" << TAI->getCommentString()
1005 << " long double next 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[0] >> 32)
1010 << "\t" << TAI->getCommentString()
1011 << " long double most significant word\n";
1014 } else assert(0 && "Floating point constant type not handled");
1015 } else if (CV->getType() == Type::Int64Ty) {
1016 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1017 uint64_t Val = CI->getZExtValue();
1019 if (TAI->getData64bitsDirective())
1020 O << TAI->getData64bitsDirective() << Val << "\n";
1021 else if (TD->isBigEndian()) {
1022 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1023 << "\t" << TAI->getCommentString()
1024 << " Double-word most significant word " << Val << "\n";
1025 O << TAI->getData32bitsDirective() << unsigned(Val)
1026 << "\t" << TAI->getCommentString()
1027 << " Double-word least significant word " << Val << "\n";
1029 O << TAI->getData32bitsDirective() << unsigned(Val)
1030 << "\t" << TAI->getCommentString()
1031 << " Double-word least significant word " << Val << "\n";
1032 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1033 << "\t" << TAI->getCommentString()
1034 << " Double-word most significant word " << Val << "\n";
1038 } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1039 const VectorType *PTy = CP->getType();
1041 for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
1042 EmitGlobalConstant(CP->getOperand(I), false);
1047 const Type *type = CV->getType();
1048 printDataDirective(type);
1049 EmitConstantValueOnly(CV);
1054 AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
1055 // Target doesn't support this yet!
1059 /// PrintSpecial - Print information related to the specified machine instr
1060 /// that is independent of the operand, and may be independent of the instr
1061 /// itself. This can be useful for portably encoding the comment character
1062 /// or other bits of target-specific knowledge into the asmstrings. The
1063 /// syntax used is ${:comment}. Targets can override this to add support
1064 /// for their own strange codes.
1065 void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) {
1066 if (!strcmp(Code, "private")) {
1067 O << TAI->getPrivateGlobalPrefix();
1068 } else if (!strcmp(Code, "comment")) {
1069 O << TAI->getCommentString();
1070 } else if (!strcmp(Code, "uid")) {
1071 // Assign a unique ID to this machine instruction.
1072 static const MachineInstr *LastMI = 0;
1073 static const Function *F = 0;
1074 static unsigned Counter = 0U-1;
1076 // Comparing the address of MI isn't sufficient, because machineinstrs may
1077 // be allocated to the same address across functions.
1078 const Function *ThisF = MI->getParent()->getParent()->getFunction();
1080 // If this is a new machine instruction, bump the counter.
1081 if (LastMI != MI || F != ThisF) {
1088 cerr << "Unknown special formatter '" << Code
1089 << "' for machine instr: " << *MI;
1095 /// printInlineAsm - This method formats and prints the specified machine
1096 /// instruction that is an inline asm.
1097 void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
1098 unsigned NumOperands = MI->getNumOperands();
1100 // Count the number of register definitions.
1101 unsigned NumDefs = 0;
1102 for (; MI->getOperand(NumDefs).isRegister() && MI->getOperand(NumDefs).isDef();
1104 assert(NumDefs != NumOperands-1 && "No asm string?");
1106 assert(MI->getOperand(NumDefs).isExternalSymbol() && "No asm string?");
1108 // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
1109 const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
1111 // If this asmstr is empty, just print the #APP/#NOAPP markers.
1112 // These are useful to see where empty asm's wound up.
1113 if (AsmStr[0] == 0) {
1114 O << TAI->getInlineAsmStart() << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1118 O << TAI->getInlineAsmStart() << "\n\t";
1120 // The variant of the current asmprinter.
1121 int AsmPrinterVariant = TAI->getAssemblerDialect();
1123 int CurVariant = -1; // The number of the {.|.|.} region we are in.
1124 const char *LastEmitted = AsmStr; // One past the last character emitted.
1126 while (*LastEmitted) {
1127 switch (*LastEmitted) {
1129 // Not a special case, emit the string section literally.
1130 const char *LiteralEnd = LastEmitted+1;
1131 while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
1132 *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
1134 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1135 O.write(LastEmitted, LiteralEnd-LastEmitted);
1136 LastEmitted = LiteralEnd;
1140 ++LastEmitted; // Consume newline character.
1141 O << "\n"; // Indent code with newline.
1144 ++LastEmitted; // Consume '$' character.
1148 switch (*LastEmitted) {
1149 default: Done = false; break;
1150 case '$': // $$ -> $
1151 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1153 ++LastEmitted; // Consume second '$' character.
1155 case '(': // $( -> same as GCC's { character.
1156 ++LastEmitted; // Consume '(' character.
1157 if (CurVariant != -1) {
1158 cerr << "Nested variants found in inline asm string: '"
1162 CurVariant = 0; // We're in the first variant now.
1165 ++LastEmitted; // consume '|' character.
1166 if (CurVariant == -1) {
1167 cerr << "Found '|' character outside of variant in inline asm "
1168 << "string: '" << AsmStr << "'\n";
1171 ++CurVariant; // We're in the next variant.
1173 case ')': // $) -> same as GCC's } char.
1174 ++LastEmitted; // consume ')' character.
1175 if (CurVariant == -1) {
1176 cerr << "Found '}' character outside of variant in inline asm "
1177 << "string: '" << AsmStr << "'\n";
1185 bool HasCurlyBraces = false;
1186 if (*LastEmitted == '{') { // ${variable}
1187 ++LastEmitted; // Consume '{' character.
1188 HasCurlyBraces = true;
1191 const char *IDStart = LastEmitted;
1194 long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
1195 if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
1196 cerr << "Bad $ operand number in inline asm string: '"
1200 LastEmitted = IDEnd;
1202 char Modifier[2] = { 0, 0 };
1204 if (HasCurlyBraces) {
1205 // If we have curly braces, check for a modifier character. This
1206 // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
1207 if (*LastEmitted == ':') {
1208 ++LastEmitted; // Consume ':' character.
1209 if (*LastEmitted == 0) {
1210 cerr << "Bad ${:} expression in inline asm string: '"
1215 Modifier[0] = *LastEmitted;
1216 ++LastEmitted; // Consume modifier character.
1219 if (*LastEmitted != '}') {
1220 cerr << "Bad ${} expression in inline asm string: '"
1224 ++LastEmitted; // Consume '}' character.
1227 if ((unsigned)Val >= NumOperands-1) {
1228 cerr << "Invalid $ operand number in inline asm string: '"
1233 // Okay, we finally have a value number. Ask the target to print this
1235 if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
1240 // Scan to find the machine operand number for the operand.
1241 for (; Val; --Val) {
1242 if (OpNo >= MI->getNumOperands()) break;
1243 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1244 OpNo += (OpFlags >> 3) + 1;
1247 if (OpNo >= MI->getNumOperands()) {
1250 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1251 ++OpNo; // Skip over the ID number.
1253 if (Modifier[0]=='l') // labels are target independent
1254 printBasicBlockLabel(MI->getOperand(OpNo).getMBB(),
1257 AsmPrinter *AP = const_cast<AsmPrinter*>(this);
1258 if ((OpFlags & 7) == 4 /*ADDR MODE*/) {
1259 Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
1260 Modifier[0] ? Modifier : 0);
1262 Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
1263 Modifier[0] ? Modifier : 0);
1268 cerr << "Invalid operand found in inline asm: '"
1278 O << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1281 /// printLabel - This method prints a local label used by debug and
1282 /// exception handling tables.
1283 void AsmPrinter::printLabel(const MachineInstr *MI) const {
1284 O << "\n" << TAI->getPrivateGlobalPrefix()
1285 << "label" << MI->getOperand(0).getImm() << ":\n";
1288 void AsmPrinter::printLabel(unsigned Id) const {
1289 O << "\n" << TAI->getPrivateGlobalPrefix() << "label" << Id << ":\n";
1292 /// printDeclare - This method prints a local variable declaration used by
1294 void AsmPrinter::printDeclare(const MachineInstr *MI) const {
1298 /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
1299 /// instruction, using the specified assembler variant. Targets should
1300 /// overried this to format as appropriate.
1301 bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
1302 unsigned AsmVariant, const char *ExtraCode) {
1303 // Target doesn't support this yet!
1307 bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
1308 unsigned AsmVariant,
1309 const char *ExtraCode) {
1310 // Target doesn't support this yet!
1314 /// printBasicBlockLabel - This method prints the label for the specified
1315 /// MachineBasicBlock
1316 void AsmPrinter::printBasicBlockLabel(const MachineBasicBlock *MBB,
1318 bool printComment) const {
1319 O << TAI->getPrivateGlobalPrefix() << "BB" << getFunctionNumber() << "_"
1320 << MBB->getNumber();
1323 if (printComment && MBB->getBasicBlock())
1324 O << '\t' << TAI->getCommentString() << ' '
1325 << MBB->getBasicBlock()->getName();
1328 /// printPICJumpTableSetLabel - This method prints a set label for the
1329 /// specified MachineBasicBlock for a jumptable entry.
1330 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
1331 const MachineBasicBlock *MBB) const {
1332 if (!TAI->getSetDirective())
1335 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1336 << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
1337 printBasicBlockLabel(MBB, false, false);
1338 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1339 << '_' << uid << '\n';
1342 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
1343 const MachineBasicBlock *MBB) const {
1344 if (!TAI->getSetDirective())
1347 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1348 << getFunctionNumber() << '_' << uid << '_' << uid2
1349 << "_set_" << MBB->getNumber() << ',';
1350 printBasicBlockLabel(MBB, false, false);
1351 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1352 << '_' << uid << '_' << uid2 << '\n';
1355 /// printDataDirective - This method prints the asm directive for the
1357 void AsmPrinter::printDataDirective(const Type *type) {
1358 const TargetData *TD = TM.getTargetData();
1359 switch (type->getTypeID()) {
1360 case Type::IntegerTyID: {
1361 unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
1363 O << TAI->getData8bitsDirective();
1364 else if (BitWidth <= 16)
1365 O << TAI->getData16bitsDirective();
1366 else if (BitWidth <= 32)
1367 O << TAI->getData32bitsDirective();
1368 else if (BitWidth <= 64) {
1369 assert(TAI->getData64bitsDirective() &&
1370 "Target cannot handle 64-bit constant exprs!");
1371 O << TAI->getData64bitsDirective();
1375 case Type::PointerTyID:
1376 if (TD->getPointerSize() == 8) {
1377 assert(TAI->getData64bitsDirective() &&
1378 "Target cannot handle 64-bit pointer exprs!");
1379 O << TAI->getData64bitsDirective();
1381 O << TAI->getData32bitsDirective();
1384 case Type::FloatTyID: case Type::DoubleTyID:
1385 case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
1386 assert (0 && "Should have already output floating point constant.");
1388 assert (0 && "Can't handle printing this type of thing");