1 //===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===//
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 #include "llvm/MC/MCStreamer.h"
11 #include "llvm/ADT/SmallString.h"
12 #include "llvm/ADT/Twine.h"
13 #include "llvm/MC/MCAsmInfo.h"
14 #include "llvm/MC/MCContext.h"
15 #include "llvm/MC/MCExpr.h"
16 #include "llvm/MC/MCObjectWriter.h"
17 #include "llvm/MC/MCSymbol.h"
18 #include "llvm/Support/ErrorHandling.h"
19 #include "llvm/Support/LEB128.h"
20 #include "llvm/Support/raw_ostream.h"
24 MCStreamer::MCStreamer(StreamerKind Kind, MCContext &Ctx)
25 : Kind(Kind), Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false),
26 CurrentW64UnwindInfo(0), LastSymbol(0), AutoInitSections(false) {
27 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
30 MCStreamer::~MCStreamer() {
31 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
32 delete W64UnwindInfos[i];
35 void MCStreamer::reset() {
36 for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
37 delete W64UnwindInfos[i];
39 EmitDebugFrame = false;
40 CurrentW64UnwindInfo = 0;
43 SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
46 const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
49 MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
51 MCSymbolRefExpr::Create(A, Variant, Context);
53 MCSymbolRefExpr::Create(B, Variant, Context);
54 const MCExpr *AddrDelta =
55 MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
59 const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
60 if (Context.getAsmInfo().hasAggressiveSymbolFolding() ||
61 isa<MCSymbolRefExpr>(Expr))
64 MCSymbol *ABS = Context.CreateTempSymbol();
65 EmitAssignment(ABS, Expr);
66 return MCSymbolRefExpr::Create(ABS, Context);
69 raw_ostream &MCStreamer::GetCommentOS() {
70 // By default, discard comments.
74 void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
75 const MCSymbol *Label, int PointerSize) {
76 // emit the sequence to set the address
77 EmitIntValue(dwarf::DW_LNS_extended_op, 1);
78 EmitULEB128IntValue(PointerSize + 1);
79 EmitIntValue(dwarf::DW_LNE_set_address, 1);
80 EmitSymbolValue(Label, PointerSize);
82 // emit the sequence for the LineDelta (from 1) and a zero address delta.
83 MCDwarfLineAddr::Emit(this, LineDelta, 0);
86 /// EmitIntValue - Special case of EmitValue that avoids the client having to
87 /// pass in a MCExpr for constant integers.
88 void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size,
90 assert(Size <= 8 && "Invalid size");
91 assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
94 const bool isLittleEndian = Context.getAsmInfo().isLittleEndian();
95 for (unsigned i = 0; i != Size; ++i) {
96 unsigned index = isLittleEndian ? i : (Size - i - 1);
97 buf[i] = uint8_t(Value >> (index * 8));
99 EmitBytes(StringRef(buf, Size), AddrSpace);
102 /// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
103 /// client having to pass in a MCExpr for constant integers.
104 void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding,
105 unsigned AddrSpace) {
106 SmallString<128> Tmp;
107 raw_svector_ostream OSE(Tmp);
108 encodeULEB128(Value, OSE, Padding);
109 EmitBytes(OSE.str(), AddrSpace);
112 /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
113 /// client having to pass in a MCExpr for constant integers.
114 void MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) {
115 SmallString<128> Tmp;
116 raw_svector_ostream OSE(Tmp);
117 encodeSLEB128(Value, OSE);
118 EmitBytes(OSE.str(), AddrSpace);
121 void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
122 unsigned AddrSpace) {
123 const MCExpr *ABS = ForceExpAbs(Value);
124 EmitValue(ABS, Size, AddrSpace);
128 void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
129 unsigned AddrSpace) {
130 EmitValueImpl(Value, Size, AddrSpace);
133 void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
134 unsigned AddrSpace) {
135 EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size,
139 void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
140 report_fatal_error("unsupported directive in streamer");
143 void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
144 report_fatal_error("unsupported directive in streamer");
147 /// EmitFill - Emit NumBytes bytes worth of the value specified by
148 /// FillValue. This implements directives such as '.space'.
149 void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
150 unsigned AddrSpace) {
151 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
152 for (uint64_t i = 0, e = NumBytes; i != e; ++i)
153 EmitValue(E, 1, AddrSpace);
156 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
158 StringRef Filename, unsigned CUID) {
159 return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID) == 0;
162 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
163 unsigned Column, unsigned Flags,
165 unsigned Discriminator,
166 StringRef FileName) {
167 getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
171 MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
172 if (FrameInfos.empty())
174 return &FrameInfos.back();
177 void MCStreamer::EnsureValidFrame() {
178 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
179 if (!CurFrame || CurFrame->End)
180 report_fatal_error("No open frame");
183 void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
184 MCSymbol *EHSymbol) {
187 void MCStreamer::EmitLabel(MCSymbol *Symbol) {
188 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
189 assert(getCurrentSection().first && "Cannot emit before setting section!");
190 Symbol->setSection(*getCurrentSection().first);
194 void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
195 assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
196 assert(getCurrentSection().first && "Cannot emit before setting section!");
197 Symbol->setSection(*getCurrentSection().first);
201 void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
203 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
204 CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
207 void MCStreamer::EmitCFISections(bool EH, bool Debug) {
210 EmitDebugFrame = Debug;
213 void MCStreamer::EmitCFIStartProc() {
214 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
215 if (CurFrame && !CurFrame->End)
216 report_fatal_error("Starting a frame before finishing the previous one!");
218 MCDwarfFrameInfo Frame;
219 EmitCFIStartProcImpl(Frame);
221 FrameInfos.push_back(Frame);
224 void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
227 void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
228 Frame.Function = LastSymbol;
229 // If the function is externally visible, we need to create a local
230 // symbol to avoid relocations.
231 StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
232 if (LastSymbol && LastSymbol->getName().startswith(Prefix)) {
233 Frame.Begin = LastSymbol;
235 Frame.Begin = getContext().CreateTempSymbol();
236 EmitLabel(Frame.Begin);
240 void MCStreamer::EmitCFIEndProc() {
242 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
243 EmitCFIEndProcImpl(*CurFrame);
246 void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
249 void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
250 Frame.End = getContext().CreateTempSymbol();
251 EmitLabel(Frame.End);
254 MCSymbol *MCStreamer::EmitCFICommon() {
256 MCSymbol *Label = getContext().CreateTempSymbol();
261 void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
262 MCSymbol *Label = EmitCFICommon();
263 MCCFIInstruction Instruction =
264 MCCFIInstruction::createDefCfa(Label, Register, Offset);
265 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
266 CurFrame->Instructions.push_back(Instruction);
269 void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
270 MCSymbol *Label = EmitCFICommon();
271 MCCFIInstruction Instruction =
272 MCCFIInstruction::createDefCfaOffset(Label, Offset);
273 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
274 CurFrame->Instructions.push_back(Instruction);
277 void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
278 MCSymbol *Label = EmitCFICommon();
279 MCCFIInstruction Instruction =
280 MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
281 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
282 CurFrame->Instructions.push_back(Instruction);
285 void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
286 MCSymbol *Label = EmitCFICommon();
287 MCCFIInstruction Instruction =
288 MCCFIInstruction::createDefCfaRegister(Label, Register);
289 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
290 CurFrame->Instructions.push_back(Instruction);
293 void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
294 MCSymbol *Label = EmitCFICommon();
295 MCCFIInstruction Instruction =
296 MCCFIInstruction::createOffset(Label, Register, Offset);
297 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
298 CurFrame->Instructions.push_back(Instruction);
301 void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
302 MCSymbol *Label = EmitCFICommon();
303 MCCFIInstruction Instruction =
304 MCCFIInstruction::createRelOffset(Label, Register, Offset);
305 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
306 CurFrame->Instructions.push_back(Instruction);
309 void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
312 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
313 CurFrame->Personality = Sym;
314 CurFrame->PersonalityEncoding = Encoding;
317 void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
319 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
320 CurFrame->Lsda = Sym;
321 CurFrame->LsdaEncoding = Encoding;
324 void MCStreamer::EmitCFIRememberState() {
325 MCSymbol *Label = EmitCFICommon();
326 MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
327 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
328 CurFrame->Instructions.push_back(Instruction);
331 void MCStreamer::EmitCFIRestoreState() {
332 // FIXME: Error if there is no matching cfi_remember_state.
333 MCSymbol *Label = EmitCFICommon();
334 MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
335 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
336 CurFrame->Instructions.push_back(Instruction);
339 void MCStreamer::EmitCFISameValue(int64_t Register) {
340 MCSymbol *Label = EmitCFICommon();
341 MCCFIInstruction Instruction =
342 MCCFIInstruction::createSameValue(Label, Register);
343 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
344 CurFrame->Instructions.push_back(Instruction);
347 void MCStreamer::EmitCFIRestore(int64_t Register) {
348 MCSymbol *Label = EmitCFICommon();
349 MCCFIInstruction Instruction =
350 MCCFIInstruction::createRestore(Label, Register);
351 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
352 CurFrame->Instructions.push_back(Instruction);
355 void MCStreamer::EmitCFIEscape(StringRef Values) {
356 MCSymbol *Label = EmitCFICommon();
357 MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
358 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
359 CurFrame->Instructions.push_back(Instruction);
362 void MCStreamer::EmitCFISignalFrame() {
364 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
365 CurFrame->IsSignalFrame = true;
368 void MCStreamer::EmitCFIUndefined(int64_t Register) {
369 MCSymbol *Label = EmitCFICommon();
370 MCCFIInstruction Instruction =
371 MCCFIInstruction::createUndefined(Label, Register);
372 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
373 CurFrame->Instructions.push_back(Instruction);
376 void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
377 MCSymbol *Label = EmitCFICommon();
378 MCCFIInstruction Instruction =
379 MCCFIInstruction::createRegister(Label, Register1, Register2);
380 MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
381 CurFrame->Instructions.push_back(Instruction);
384 void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
385 W64UnwindInfos.push_back(Frame);
386 CurrentW64UnwindInfo = W64UnwindInfos.back();
389 void MCStreamer::EnsureValidW64UnwindInfo() {
390 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
391 if (!CurFrame || CurFrame->End)
392 report_fatal_error("No open Win64 EH frame function!");
395 void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
396 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
397 if (CurFrame && !CurFrame->End)
398 report_fatal_error("Starting a function before ending the previous one!");
399 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
400 Frame->Begin = getContext().CreateTempSymbol();
401 Frame->Function = Symbol;
402 EmitLabel(Frame->Begin);
403 setCurrentW64UnwindInfo(Frame);
406 void MCStreamer::EmitWin64EHEndProc() {
407 EnsureValidW64UnwindInfo();
408 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
409 if (CurFrame->ChainedParent)
410 report_fatal_error("Not all chained regions terminated!");
411 CurFrame->End = getContext().CreateTempSymbol();
412 EmitLabel(CurFrame->End);
415 void MCStreamer::EmitWin64EHStartChained() {
416 EnsureValidW64UnwindInfo();
417 MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
418 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
419 Frame->Begin = getContext().CreateTempSymbol();
420 Frame->Function = CurFrame->Function;
421 Frame->ChainedParent = CurFrame;
422 EmitLabel(Frame->Begin);
423 setCurrentW64UnwindInfo(Frame);
426 void MCStreamer::EmitWin64EHEndChained() {
427 EnsureValidW64UnwindInfo();
428 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
429 if (!CurFrame->ChainedParent)
430 report_fatal_error("End of a chained region outside a chained region!");
431 CurFrame->End = getContext().CreateTempSymbol();
432 EmitLabel(CurFrame->End);
433 CurrentW64UnwindInfo = CurFrame->ChainedParent;
436 void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
438 EnsureValidW64UnwindInfo();
439 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
440 if (CurFrame->ChainedParent)
441 report_fatal_error("Chained unwind areas can't have handlers!");
442 CurFrame->ExceptionHandler = Sym;
443 if (!Except && !Unwind)
444 report_fatal_error("Don't know what kind of handler this is!");
446 CurFrame->HandlesUnwind = true;
448 CurFrame->HandlesExceptions = true;
451 void MCStreamer::EmitWin64EHHandlerData() {
452 EnsureValidW64UnwindInfo();
453 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
454 if (CurFrame->ChainedParent)
455 report_fatal_error("Chained unwind areas can't have handlers!");
458 void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
459 EnsureValidW64UnwindInfo();
460 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
461 MCSymbol *Label = getContext().CreateTempSymbol();
462 MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
464 CurFrame->Instructions.push_back(Inst);
467 void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
468 EnsureValidW64UnwindInfo();
469 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
470 if (CurFrame->LastFrameInst >= 0)
471 report_fatal_error("Frame register and offset already specified!");
473 report_fatal_error("Misaligned frame pointer offset!");
474 MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, 0, Register, Offset);
475 CurFrame->LastFrameInst = CurFrame->Instructions.size();
476 CurFrame->Instructions.push_back(Inst);
479 void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
480 EnsureValidW64UnwindInfo();
482 report_fatal_error("Misaligned stack allocation!");
483 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
484 MCSymbol *Label = getContext().CreateTempSymbol();
485 MCWin64EHInstruction Inst(Label, Size);
487 CurFrame->Instructions.push_back(Inst);
490 void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
491 EnsureValidW64UnwindInfo();
493 report_fatal_error("Misaligned saved register offset!");
494 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
495 MCSymbol *Label = getContext().CreateTempSymbol();
496 MCWin64EHInstruction Inst(
497 Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
498 Label, Register, Offset);
500 CurFrame->Instructions.push_back(Inst);
503 void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
504 EnsureValidW64UnwindInfo();
506 report_fatal_error("Misaligned saved vector register offset!");
507 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
508 MCSymbol *Label = getContext().CreateTempSymbol();
509 MCWin64EHInstruction Inst(
510 Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
511 Label, Register, Offset);
513 CurFrame->Instructions.push_back(Inst);
516 void MCStreamer::EmitWin64EHPushFrame(bool Code) {
517 EnsureValidW64UnwindInfo();
518 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
519 if (CurFrame->Instructions.size() > 0)
520 report_fatal_error("If present, PushMachFrame must be the first UOP");
521 MCSymbol *Label = getContext().CreateTempSymbol();
522 MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
524 CurFrame->Instructions.push_back(Inst);
527 void MCStreamer::EmitWin64EHEndProlog() {
528 EnsureValidW64UnwindInfo();
529 MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
530 CurFrame->PrologEnd = getContext().CreateTempSymbol();
531 EmitLabel(CurFrame->PrologEnd);
534 void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
535 llvm_unreachable("This file format doesn't support this directive");
538 void MCStreamer::EmitFnStart() {
539 errs() << "Not implemented yet\n";
543 void MCStreamer::EmitFnEnd() {
544 errs() << "Not implemented yet\n";
548 void MCStreamer::EmitCantUnwind() {
549 errs() << "Not implemented yet\n";
553 void MCStreamer::EmitHandlerData() {
554 errs() << "Not implemented yet\n";
558 void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
559 errs() << "Not implemented yet\n";
563 void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
564 errs() << "Not implemented yet\n";
568 void MCStreamer::EmitPad(int64_t Offset) {
569 errs() << "Not implemented yet\n";
573 void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
574 errs() << "Not implemented yet\n";
578 void MCStreamer::EmitTCEntry(const MCSymbol &S) {
579 llvm_unreachable("Unsupported method");
582 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
583 /// the specified string in the output .s file. This capability is
584 /// indicated by the hasRawTextSupport() predicate.
585 void MCStreamer::EmitRawText(StringRef String) {
586 errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
587 " something must not be fully mc'ized\n";
591 void MCStreamer::EmitRawText(const Twine &T) {
592 SmallString<128> Str;
594 EmitRawText(Str.str());
597 void MCStreamer::EmitFrames(bool usingCFI) {
598 if (!getNumFrameInfos())
602 MCDwarfFrameEmitter::Emit(*this, usingCFI, true);
605 MCDwarfFrameEmitter::Emit(*this, usingCFI, false);
608 void MCStreamer::EmitW64Tables() {
609 if (!getNumW64UnwindInfos())
612 MCWin64EHUnwindEmitter::Emit(*this);
615 void MCStreamer::Finish() {
616 if (!FrameInfos.empty() && !FrameInfos.back().End)
617 report_fatal_error("Unfinished frame!");
622 MCSymbolData &MCStreamer::getOrCreateSymbolData(MCSymbol *Symbol) {
623 report_fatal_error("Not supported!");
624 return *(static_cast<MCSymbolData*>(0));