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One MDNode may be used to create regular DIE as well as abstract DIE.

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Keep track of abstract subprogram DIEs. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107822 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-07-07 22:20:57 +00:00
parent bcc8017c73
commit 8aa61477e3
2 changed files with 17 additions and 1 deletions
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15
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1389,6 +1389,7 @@ static bool isSubprogramContext(const MDNode *Context) {
DIE *DwarfDebug::updateSubprogramScopeDIE(const MDNode *SPNode) {
CompileUnit *SPCU = getCompileUnit(SPNode);
DIE *SPDie = SPCU->getDIE(SPNode);
assert(SPDie && "Unable to find subprogram DIE!");
DISubprogram SP(SPNode);
@ -1422,6 +1423,14 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(const MDNode *SPNode) {
SPCU->addDie(SPDie);
}
// Pick up abstract subprogram DIE.
if (DIE *AbsSPDIE = AbstractSPDies.lookup(SPNode)) {
SPDie = new DIE(dwarf::DW_TAG_subprogram);
addDIEEntry(SPDie, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, AbsSPDIE);
SPCU->addDie(SPDie);
}
addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
@ -1695,8 +1704,12 @@ DIE *DwarfDebug::constructScopeDIE(DbgScope *Scope) {
ScopeDIE = constructInlinedScopeDIE(Scope);
else if (DS.isSubprogram()) {
ProcessedSPNodes.insert(DS);
if (Scope->isAbstractScope())
if (Scope->isAbstractScope()) {
ScopeDIE = getCompileUnit(DS)->getDIE(DS);
// Note down abstract DIE.
if (ScopeDIE)
AbstractSPDies.insert(std::make_pair(DS, ScopeDIE));
}
else
ScopeDIE = updateSubprogramScopeDIE(DS);
}

3
lib/CodeGen/AsmPrinter/DwarfDebug.h
View File

@ -156,6 +156,9 @@ class DwarfDebug {
/// not included DbgScopeMap. AbstractScopes owns its DbgScope*s.
DenseMap<const MDNode *, DbgScope *> AbstractScopes;
/// AbstractSPDies - Collection of abstract subprogram DIEs.
DenseMap<const MDNode *, DIE *> AbstractSPDies;
/// AbstractScopesList - Tracks abstract scopes constructed while processing
/// a function. This list is cleared during endFunction().
SmallVector<DbgScope *, 4>AbstractScopesList;