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Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp140
1 files changed, 90 insertions, 50 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index cd7cf7bf5be..52a809f9bf0 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -185,8 +185,8 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
: Asm(A), MMI(Asm->MMI), FirstCU(0),
AbbreviationsSet(InitAbbreviationsSetSize),
SourceIdMap(DIEValueAllocator), PrevLabel(NULL), GlobalCUIndexCount(0),
- InfoHolder(A, &AbbreviationsSet, Abbreviations, "info_string",
- DIEValueAllocator),
+ GlobalRangeCount(0), InfoHolder(A, &AbbreviationsSet, Abbreviations,
+ "info_string", DIEValueAllocator),
SkeletonAbbrevSet(InitAbbreviationsSetSize),
SkeletonHolder(A, &SkeletonAbbrevSet, SkeletonAbbrevs, "skel_string",
DIEValueAllocator) {
@@ -429,12 +429,12 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU, DISubprogram SP) {
}
}
- SPCU->addLabelAddress(
- SPDie, dwarf::DW_AT_low_pc,
- Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
- SPCU->addLabelAddress(
- SPDie, dwarf::DW_AT_high_pc,
- Asm->GetTempSymbol("func_end", Asm->getFunctionNumber()));
+ MCSymbol *FuncBegin =
+ Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber());
+ MCSymbol *FuncEnd = Asm->GetTempSymbol("func_end", Asm->getFunctionNumber());
+ SPCU->addLabelAddress(SPDie, dwarf::DW_AT_low_pc, FuncBegin);
+ SPCU->addLabelAddress(SPDie, dwarf::DW_AT_high_pc, FuncEnd);
+
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
SPCU->addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
@@ -478,30 +478,31 @@ DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
if (Scope->isAbstractScope())
return ScopeDIE;
- const SmallVectorImpl<InsnRange> &Ranges = Scope->getRanges();
+ const SmallVectorImpl<InsnRange> &ScopeRanges = Scope->getRanges();
// If we have multiple ranges, emit them into the range section.
- if (Ranges.size() > 1) {
+ if (ScopeRanges.size() > 1) {
// .debug_range section has not been laid out yet. Emit offset in
// .debug_range as a relocatable label. emitDIE will handle
// emitting it appropriately.
- unsigned Offset = DebugRangeSymbols.size();
- TheCU->addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges,
- Asm->GetTempSymbol("debug_ranges", Offset));
- for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
- RE = Ranges.end();
+ TheCU->addSectionLabel(
+ ScopeDIE, dwarf::DW_AT_ranges,
+ Asm->GetTempSymbol("debug_ranges", GlobalRangeCount));
+ RangeSpanList *List = new RangeSpanList(GlobalRangeCount++);
+ for (SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin(),
+ RE = ScopeRanges.end();
RI != RE; ++RI) {
- DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
- DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
+ RangeSpan Range(getLabelBeforeInsn(RI->first),
+ getLabelAfterInsn(RI->second));
+ List->addRange(Range);
}
- // Terminate the range list.
- DebugRangeSymbols.push_back(NULL);
- DebugRangeSymbols.push_back(NULL);
+ // Add the range list to the set of ranges to be emitted.
+ TheCU->addRangeList(List);
return ScopeDIE;
}
// Construct the address range for this DIE.
- SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin();
+ SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin();
MCSymbol *Start = getLabelBeforeInsn(RI->first);
MCSymbol *End = getLabelAfterInsn(RI->second);
assert(End && "End label should not be null!");
@@ -519,8 +520,8 @@ DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
// represent this concrete inlined copy of the function.
DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
LexicalScope *Scope) {
- const SmallVectorImpl<InsnRange> &Ranges = Scope->getRanges();
- assert(Ranges.empty() == false &&
+ const SmallVectorImpl<InsnRange> &ScopeRanges = Scope->getRanges();
+ assert(ScopeRanges.empty() == false &&
"LexicalScope does not have instruction markers!");
if (!Scope->getScopeNode())
@@ -536,23 +537,26 @@ DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
DIE *ScopeDIE = new DIE(dwarf::DW_TAG_inlined_subroutine);
TheCU->addDIEEntry(ScopeDIE, dwarf::DW_AT_abstract_origin, OriginDIE);
- if (Ranges.size() > 1) {
+ if (ScopeRanges.size() > 1) {
// .debug_range section has not been laid out yet. Emit offset in
// .debug_range as a relocatable label. emitDIE will handle
// emitting it appropriately.
- unsigned Offset = DebugRangeSymbols.size();
- TheCU->addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges,
- Asm->GetTempSymbol("debug_ranges", Offset));
- for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
- RE = Ranges.end();
+ TheCU->addSectionLabel(
+ ScopeDIE, dwarf::DW_AT_ranges,
+ Asm->GetTempSymbol("debug_ranges", GlobalRangeCount));
+ RangeSpanList *List = new RangeSpanList(GlobalRangeCount++);
+ for (SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin(),
+ RE = ScopeRanges.end();
RI != RE; ++RI) {
- DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
- DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
+ RangeSpan Range(getLabelBeforeInsn(RI->first),
+ getLabelAfterInsn(RI->second));
+ List->addRange(Range);
}
- DebugRangeSymbols.push_back(NULL);
- DebugRangeSymbols.push_back(NULL);
+
+ // Add the range list to the set of ranges to be emitted.
+ TheCU->addRangeList(List);
} else {
- SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin();
+ SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin();
MCSymbol *StartLabel = getLabelBeforeInsn(RI->first);
MCSymbol *EndLabel = getLabelAfterInsn(RI->second);
@@ -2922,18 +2926,51 @@ void DwarfDebug::emitDebugRanges() {
// Start the dwarf ranges section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfRangesSection());
+
+ // Size for our labels.
unsigned char Size = Asm->getDataLayout().getPointerSize();
- for (uint32_t i = 0, e = DebugRangeSymbols.size(); i < e; ++i) {
- // Only emit a symbol for every range pair for now.
- // FIXME: Make this per range list.
- if ((i % 2) == 0)
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_ranges", i));
-
- const MCSymbol *I = DebugRangeSymbols[i];
- if (I)
- Asm->OutStreamer.EmitSymbolValue(I, Size);
- else
+
+ // Grab the specific ranges for the compile units in the module.
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end();
+ I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ unsigned ID = TheCU->getUniqueID();
+
+ // Emit a symbol so we can find the beginning of our ranges.
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("gnu_ranges", ID));
+
+ // Iterate over the misc ranges for the compile units in the module.
+ const SmallVectorImpl<RangeSpanList *> &RangeLists = TheCU->getRangeLists();
+ for (SmallVectorImpl<RangeSpanList *>::const_iterator
+ I = RangeLists.begin(),
+ E = RangeLists.end();
+ I != E; ++I) {
+ RangeSpanList *List = *I;
+
+ // Emit a symbol so we can find the beginning of the range.
+ Asm->OutStreamer.EmitLabel(
+ Asm->GetTempSymbol("debug_ranges", List->getIndex()));
+
+ for (SmallVectorImpl<RangeSpan>::const_iterator
+ I = List->getRanges().begin(),
+ E = List->getRanges().end();
+ I != E; ++I) {
+ RangeSpan Range = *I;
+ // We occasionally have ranges without begin/end labels.
+ // FIXME: Verify and fix.
+ const MCSymbol *Begin = Range.getStart();
+ const MCSymbol *End = Range.getEnd();
+ Begin ? Asm->OutStreamer.EmitSymbolValue(Begin, Size)
+ : Asm->OutStreamer.EmitIntValue(0, Size);
+ End ? Asm->OutStreamer.EmitSymbolValue(End, Size)
+ : Asm->OutStreamer.EmitIntValue(0, Size);
+ }
+
+ // And terminate the list with two 0 values.
+ Asm->OutStreamer.EmitIntValue(0, Size);
Asm->OutStreamer.EmitIntValue(0, Size);
+ }
}
}
@@ -3007,14 +3044,17 @@ CompileUnit *DwarfDebug::constructSkeletonCU(const CompileUnit *CU) {
DwarfGnuPubTypesSectionSym);
}
- // Flag if we've emitted any ranges and their location for the compile unit.
- if (DebugRangeSymbols.size()) {
+ // Attribute if we've emitted any ranges and their location for the compile unit.
+ if (CU->getRangeLists().size()) {
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addSectionLabel(Die, dwarf::DW_AT_GNU_ranges_base,
- DwarfDebugRangeSectionSym);
+ NewCU->addSectionLabel(
+ Die, dwarf::DW_AT_GNU_ranges_base,
+ Asm->GetTempSymbol("gnu_ranges", NewCU->getUniqueID()));
else
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_ranges_base, dwarf::DW_FORM_data4,
- 0);
+ NewCU->addSectionDelta(
+ Die, dwarf::DW_AT_GNU_ranges_base,
+ Asm->GetTempSymbol("gnu_ranges", NewCU->getUniqueID()),
+ DwarfDebugRangeSectionSym);
}
SkeletonHolder.addUnit(NewCU);
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