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Adjust debug range offsets for isWeakForLinker() functions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102127 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2010-04-22 20:52:00 +00:00
parent 9c675f14c1
commit 18ee3bb0b7
3 changed files with 67 additions and 6 deletions
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lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+28 -6
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@@ -1384,6 +1384,11 @@ DIE *DwarfDebug::constructLexicalScopeDIE(DbgScope *Scope) {
if (Ranges.empty())
return 0;
bool MarkFunctionBegin = false;
if (FunctionBeginSym &&
Asm->MF->getFunction()->isWeakForLinker())
MarkFunctionBegin = true;
SmallVector<DbgRange, 4>::const_iterator RI = Ranges.begin();
if (Ranges.size() > 1) {
// .debug_range section has not been laid out yet. Emit offset in
@@ -1393,8 +1398,15 @@ DIE *DwarfDebug::constructLexicalScopeDIE(DbgScope *Scope) {
DebugRangeSymbols.size() * Asm->getTargetData().getPointerSize());
for (SmallVector<DbgRange, 4>::const_iterator RI = Ranges.begin(),
RE = Ranges.end(); RI != RE; ++RI) {
DebugRangeSymbols.push_back(LabelsBeforeInsn.lookup(RI->first));
DebugRangeSymbols.push_back(LabelsAfterInsn.lookup(RI->second));
MCSymbol *Sym = LabelsBeforeInsn.lookup(RI->first);
if (MarkFunctionBegin)
WeakDebugRangeSymbols.insert(std::make_pair(Sym, FunctionBeginSym));
DebugRangeSymbols.push_back(Sym);
Sym = LabelsAfterInsn.lookup(RI->second);
if (MarkFunctionBegin)
WeakDebugRangeSymbols.insert(std::make_pair(Sym, FunctionBeginSym));
DebugRangeSymbols.push_back(Sym);
}
DebugRangeSymbols.push_back(NULL);
DebugRangeSymbols.push_back(NULL);
@@ -3228,11 +3240,21 @@ void DwarfDebug::emitDebugRanges() {
// Start the dwarf ranges section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfRangesSection());
for (SmallVector<const MCSymbol *, 8>::const_iterator I = DebugRangeSymbols.begin(),
E = DebugRangeSymbols.end(); I != E; ++I) {
if (*I)
Asm->EmitLabelDifference(*I, TextSectionSym,
for (SmallVector<const MCSymbol *, 8>::const_iterator
I = DebugRangeSymbols.begin(), E = DebugRangeSymbols.end();
I != E; ++I) {
if (*I) {
const MCSymbol *Begin = TextSectionSym;
// If this symbol is inside linkonce section then use appropriate begin
// marker;
DenseMap<const MCSymbol *, const MCSymbol *>::iterator WI
= WeakDebugRangeSymbols.find(*I);
if (WI != WeakDebugRangeSymbols.end())
Begin = WI->second;
Asm->EmitLabelDifference(*I, Begin,
Asm->getTargetData().getPointerSize());
}
else
Asm->OutStreamer.EmitIntValue(0, Asm->getTargetData().getPointerSize(),
/*addrspace*/0);