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Switch Darwin to the generic CIE/FDE printer. 

llvm-svn: 131031
This commit is contained in:
Rafael Espindola 2011-05-06 22:29:04 +00:00
parent 4c261a2831
commit bcabcdcedd
2 changed files with 0 additions and 65 deletions
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1
llvm/include/llvm/MC/MCDwarf.h
View File

@ -282,7 +282,6 @@ namespace llvm {
// This emits the frame info section.
//
static void Emit(MCStreamer &streamer, bool usingCFI);
static void EmitDarwin(MCStreamer &streamer, bool usingCFI);
static void EmitAdvanceLoc(MCStreamer &Streamer, uint64_t AddrDelta);
static void EncodeAdvanceLoc(uint64_t AddrDelta, raw_ostream &OS,
const TargetAsmInfo &AsmInfo);

64
llvm/lib/MC/MCDwarf.cpp
View File

@ -835,74 +835,10 @@ namespace llvm {
};
}
// This is an implementation of CIE and FDE emission that is bug by bug
// compatible with the one in CodeGen. It is useful during the transition
// to make it easy to compare the outputs, but should probably be removed
// afterwards.
void MCDwarfFrameEmitter::EmitDarwin(MCStreamer &streamer,
bool usingCFI) {
FrameEmitterImpl Emitter(usingCFI);
DenseMap<const MCSymbol*, const MCSymbol*> Personalities;
const MCSymbol *aCIE = NULL;
const MCDwarfFrameInfo *aFrame = NULL;
for (unsigned i = 0, n = streamer.getNumFrameInfos(); i < n; ++i) {
const MCDwarfFrameInfo &frame = streamer.getFrameInfo(i);
if (!frame.Personality)
continue;
if (Personalities.count(frame.Personality))
continue;
const MCSymbol *cieStart = &Emitter.EmitCIE(streamer, frame.Personality,
frame.PersonalityEncoding,
frame.Lsda,
frame.LsdaEncoding);
aCIE = cieStart;
aFrame = &frame;
Personalities[frame.Personality] = cieStart;
}
if (Personalities.empty()) {
const MCDwarfFrameInfo &frame = streamer.getFrameInfo(0);
aCIE = &Emitter.EmitCIE(streamer, frame.Personality,
frame.PersonalityEncoding, frame.Lsda,
frame.LsdaEncoding);
aFrame = &frame;
}
MCSymbol *fdeEnd = NULL;
for (unsigned i = 0, n = streamer.getNumFrameInfos(); i < n; ++i) {
const MCDwarfFrameInfo &frame = streamer.getFrameInfo(i);
const MCSymbol *cieStart = Personalities[frame.Personality];
bool hasLSDA;
if (!cieStart) {
cieStart = aCIE;
hasLSDA = aFrame->Lsda;
} else {
hasLSDA = true;
}
fdeEnd = Emitter.EmitFDE(streamer, *cieStart, frame,
hasLSDA);
if (i != n - 1)
streamer.EmitLabel(fdeEnd);
}
const MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
streamer.EmitValueToAlignment(asmInfo.getPointerSize());
if (fdeEnd)
streamer.EmitLabel(fdeEnd);
}
void MCDwarfFrameEmitter::Emit(MCStreamer &streamer,
bool usingCFI) {
const MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
if (!asmInfo.isFunctionEHFrameSymbolPrivate()) {
EmitDarwin(streamer, usingCFI);
return;
}
MCSymbol *fdeEnd = NULL;
DenseMap<CIEKey, const MCSymbol*> CIEStarts;