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[AsmPrinter] Make AsmPrinter's OutStreamer member a unique_ptr.

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AsmPrinter owns the OutStreamer, so an owning pointer makes sense here. Using a
reference for this is crufty.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235752 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2015-04-24 19:11:51 +00:00
parent b5365eec18
commit 579cebfb15
37 changed files with 986 additions and 981 deletions
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66
lib/CodeGen/AsmPrinter/WinCodeViewLineTables.cpp
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@ -95,7 +95,7 @@ void WinCodeViewLineTables::maybeRecordLocation(DebugLoc DL,
FileNameRegistry.add(Filename);
MCSymbol *MCL = Asm->MMI->getContext().CreateTempSymbol();
Asm->OutStreamer.EmitLabel(MCL);
Asm->OutStreamer->EmitLabel(MCL);
CurFn->Instrs.push_back(MCL);
InstrInfo[MCL] = InstrInfoTy(Filename, DL.getLine());
}
@ -120,7 +120,7 @@ void WinCodeViewLineTables::endModule() {
return;
assert(Asm != nullptr);
Asm->OutStreamer.SwitchSection(
Asm->OutStreamer->SwitchSection(
Asm->getObjFileLowering().getCOFFDebugSymbolsSection());
Asm->EmitInt32(COFF::DEBUG_SECTION_MAGIC);
@ -135,7 +135,7 @@ void WinCodeViewLineTables::endModule() {
emitDebugInfoForFunction(VisitedFunctions[I]);
// This subsection holds a file index to offset in string table table.
Asm->OutStreamer.AddComment("File index to string table offset subsection");
Asm->OutStreamer->AddComment("File index to string table offset subsection");
Asm->EmitInt32(COFF::DEBUG_INDEX_SUBSECTION);
size_t NumFilenames = FileNameRegistry.Infos.size();
Asm->EmitInt32(8 * NumFilenames);
@ -148,7 +148,7 @@ void WinCodeViewLineTables::endModule() {
}
// This subsection holds the string table.
Asm->OutStreamer.AddComment("String table");
Asm->OutStreamer->AddComment("String table");
Asm->EmitInt32(COFF::DEBUG_STRING_TABLE_SUBSECTION);
Asm->EmitInt32(FileNameRegistry.LastOffset);
// The payload starts with a null character.
@ -156,12 +156,12 @@ void WinCodeViewLineTables::endModule() {
for (size_t I = 0, E = FileNameRegistry.Filenames.size(); I != E; ++I) {
// Just emit unique filenames one by one, separated by a null character.
Asm->OutStreamer.EmitBytes(FileNameRegistry.Filenames[I]);
Asm->OutStreamer->EmitBytes(FileNameRegistry.Filenames[I]);
Asm->EmitInt8(0);
}
// No more subsections. Fill with zeros to align the end of the section by 4.
Asm->OutStreamer.EmitFill((-FileNameRegistry.LastOffset) % 4, 0);
Asm->OutStreamer->EmitFill((-FileNameRegistry.LastOffset) % 4, 0);
clear();
}
@ -203,39 +203,39 @@ void WinCodeViewLineTables::emitDebugInfoForFunction(const Function *GV) {
// Emit a symbol subsection, required by VS2012+ to find function boundaries.
MCSymbol *SymbolsBegin = Asm->MMI->getContext().CreateTempSymbol(),
*SymbolsEnd = Asm->MMI->getContext().CreateTempSymbol();
Asm->OutStreamer.AddComment("Symbol subsection for " + Twine(FuncName));
Asm->OutStreamer->AddComment("Symbol subsection for " + Twine(FuncName));
Asm->EmitInt32(COFF::DEBUG_SYMBOL_SUBSECTION);
EmitLabelDiff(Asm->OutStreamer, SymbolsBegin, SymbolsEnd);
Asm->OutStreamer.EmitLabel(SymbolsBegin);
EmitLabelDiff(*Asm->OutStreamer, SymbolsBegin, SymbolsEnd);
Asm->OutStreamer->EmitLabel(SymbolsBegin);
{
MCSymbol *ProcSegmentBegin = Asm->MMI->getContext().CreateTempSymbol(),
*ProcSegmentEnd = Asm->MMI->getContext().CreateTempSymbol();
EmitLabelDiff(Asm->OutStreamer, ProcSegmentBegin, ProcSegmentEnd, 2);
Asm->OutStreamer.EmitLabel(ProcSegmentBegin);
EmitLabelDiff(*Asm->OutStreamer, ProcSegmentBegin, ProcSegmentEnd, 2);
Asm->OutStreamer->EmitLabel(ProcSegmentBegin);
Asm->EmitInt16(COFF::DEBUG_SYMBOL_TYPE_PROC_START);
// Some bytes of this segment don't seem to be required for basic debugging,
// so just fill them with zeroes.
Asm->OutStreamer.EmitFill(12, 0);
Asm->OutStreamer->EmitFill(12, 0);
// This is the important bit that tells the debugger where the function
// code is located and what's its size:
EmitLabelDiff(Asm->OutStreamer, Fn, FI.End);
Asm->OutStreamer.EmitFill(12, 0);
Asm->OutStreamer.EmitCOFFSecRel32(Fn);
Asm->OutStreamer.EmitCOFFSectionIndex(Fn);
EmitLabelDiff(*Asm->OutStreamer, Fn, FI.End);
Asm->OutStreamer->EmitFill(12, 0);
Asm->OutStreamer->EmitCOFFSecRel32(Fn);
Asm->OutStreamer->EmitCOFFSectionIndex(Fn);
Asm->EmitInt8(0);
// Emit the function display name as a null-terminated string.
Asm->OutStreamer.EmitBytes(FuncName);
Asm->OutStreamer->EmitBytes(FuncName);
Asm->EmitInt8(0);
Asm->OutStreamer.EmitLabel(ProcSegmentEnd);
Asm->OutStreamer->EmitLabel(ProcSegmentEnd);
// We're done with this function.
Asm->EmitInt16(0x0002);
Asm->EmitInt16(COFF::DEBUG_SYMBOL_TYPE_PROC_END);
}
Asm->OutStreamer.EmitLabel(SymbolsEnd);
Asm->OutStreamer->EmitLabel(SymbolsEnd);
// Every subsection must be aligned to a 4-byte boundary.
Asm->OutStreamer.EmitFill((-FuncName.size()) % 4, 0);
Asm->OutStreamer->EmitFill((-FuncName.size()) % 4, 0);
// PCs/Instructions are grouped into segments sharing the same filename.
// Pre-calculate the lengths (in instructions) of these segments and store
@ -254,21 +254,21 @@ void WinCodeViewLineTables::emitDebugInfoForFunction(const Function *GV) {
FilenameSegmentLengths[LastSegmentEnd] = FI.Instrs.size() - LastSegmentEnd;
// Emit a line table subsection, requred to do PC-to-file:line lookup.
Asm->OutStreamer.AddComment("Line table subsection for " + Twine(FuncName));
Asm->OutStreamer->AddComment("Line table subsection for " + Twine(FuncName));
Asm->EmitInt32(COFF::DEBUG_LINE_TABLE_SUBSECTION);
MCSymbol *LineTableBegin = Asm->MMI->getContext().CreateTempSymbol(),
*LineTableEnd = Asm->MMI->getContext().CreateTempSymbol();
EmitLabelDiff(Asm->OutStreamer, LineTableBegin, LineTableEnd);
Asm->OutStreamer.EmitLabel(LineTableBegin);
EmitLabelDiff(*Asm->OutStreamer, LineTableBegin, LineTableEnd);
Asm->OutStreamer->EmitLabel(LineTableBegin);
// Identify the function this subsection is for.
Asm->OutStreamer.EmitCOFFSecRel32(Fn);
Asm->OutStreamer.EmitCOFFSectionIndex(Fn);
Asm->OutStreamer->EmitCOFFSecRel32(Fn);
Asm->OutStreamer->EmitCOFFSectionIndex(Fn);
// Insert padding after a 16-bit section index.
Asm->EmitInt16(0);
// Length of the function's code, in bytes.
EmitLabelDiff(Asm->OutStreamer, Fn, FI.End);
EmitLabelDiff(*Asm->OutStreamer, Fn, FI.End);
// PC-to-linenumber lookup table:
MCSymbol *FileSegmentEnd = nullptr;
@ -279,17 +279,17 @@ void WinCodeViewLineTables::emitDebugInfoForFunction(const Function *GV) {
if (FilenameSegmentLengths.count(J)) {
// We came to a beginning of a new filename segment.
if (FileSegmentEnd)
Asm->OutStreamer.EmitLabel(FileSegmentEnd);
Asm->OutStreamer->EmitLabel(FileSegmentEnd);
StringRef CurFilename = InstrInfo[FI.Instrs[J]].Filename;
assert(FileNameRegistry.Infos.count(CurFilename));
size_t IndexInStringTable =
FileNameRegistry.Infos[CurFilename].FilenameID;
// Each segment starts with the offset of the filename
// in the string table.
Asm->OutStreamer.AddComment(
Asm->OutStreamer->AddComment(
"Segment for file '" + Twine(CurFilename) + "' begins");
MCSymbol *FileSegmentBegin = Asm->MMI->getContext().CreateTempSymbol();
Asm->OutStreamer.EmitLabel(FileSegmentBegin);
Asm->OutStreamer->EmitLabel(FileSegmentBegin);
Asm->EmitInt32(8 * IndexInStringTable);
// Number of PC records in the lookup table.
@ -299,17 +299,17 @@ void WinCodeViewLineTables::emitDebugInfoForFunction(const Function *GV) {
// Full size of the segment for this filename, including the prev two
// records.
FileSegmentEnd = Asm->MMI->getContext().CreateTempSymbol();
EmitLabelDiff(Asm->OutStreamer, FileSegmentBegin, FileSegmentEnd);
EmitLabelDiff(*Asm->OutStreamer, FileSegmentBegin, FileSegmentEnd);
}
// The first PC with the given linenumber and the linenumber itself.
EmitLabelDiff(Asm->OutStreamer, Fn, Instr);
EmitLabelDiff(*Asm->OutStreamer, Fn, Instr);
Asm->EmitInt32(InstrInfo[Instr].LineNumber);
}
if (FileSegmentEnd)
Asm->OutStreamer.EmitLabel(FileSegmentEnd);
Asm->OutStreamer.EmitLabel(LineTableEnd);
Asm->OutStreamer->EmitLabel(FileSegmentEnd);
Asm->OutStreamer->EmitLabel(LineTableEnd);
}
void WinCodeViewLineTables::beginFunction(const MachineFunction *MF) {