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If there is not any debug info available for any global variables and any subprograms then there is not any debug info to emit.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65352 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-02-24 00:02:15 +00:00
parent 15cab2817b
commit 53cac18cca
1 changed files with 26 additions and 13 deletions
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39
lib/CodeGen/AsmPrinter/DwarfWriter.cpp
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@ -2826,11 +2826,13 @@ private:
}
/// ConstructGlobalVariableDIEs - Create DIEs for each of the externally
/// visible global variables.
void ConstructGlobalVariableDIEs() {
/// visible global variables. Return true if at least one global DIE is
/// created.
bool ConstructGlobalVariableDIEs() {
std::string GVName = "llvm.dbg.global_variables";
std::vector<GlobalVariable*> Result;
getGlobalVariablesUsing(*M, GVName, Result);
bool result = false;
for (std::vector<GlobalVariable *>::iterator GVI = Result.begin(),
GVE = Result.end(); GVI != GVE; ++GVI) {
DIGlobalVariable DI_GV(*GVI);
@ -2853,22 +2855,24 @@ private:
//Add to map.
Slot = VariableDie;
//Add to context owner.
DW_Unit->getDie()->AddChild(VariableDie);
//Expose as global. FIXME - need to check external flag.
DW_Unit->AddGlobal(DI_GV.getName(), VariableDie);
if (!result)
result = true;
}
return result;
}
/// ConstructSubprograms - Create DIEs for each of the externally visible
/// subprograms.
void ConstructSubprograms() {
/// subprograms. Return true if at least one subprogram DIE is created.
bool ConstructSubprograms() {
std::string SPName = "llvm.dbg.subprograms";
std::vector<GlobalVariable*> Result;
getGlobalVariablesUsing(*M, SPName, Result);
bool result = false;
for (std::vector<GlobalVariable *>::iterator RI = Result.begin(),
RE = Result.end(); RI != RE; ++RI) {
@ -2894,7 +2898,11 @@ private:
Unit->getDie()->AddChild(SubprogramDie);
//Expose as global.
Unit->AddGlobal(SP.getName(), SubprogramDie);
if (!result)
result = true;
}
return result;
}
public:
@ -2930,16 +2938,21 @@ public:
if (DW_CUs.empty())
return;
// Create DIEs for each of the externally visible global variables.
bool globalDIEs = ConstructGlobalVariableDIEs();
// Create DIEs for each of the externally visible subprograms.
bool subprogramDIEs = ConstructSubprograms();
// If there is not any debug info available for any global variables
// and any subprograms then there is not any debug info to emit.
if (!globalDIEs && !subprogramDIEs)
return;
MMI = mmi;
shouldEmit = true;
MMI->setDebugInfoAvailability(true);
// Create DIEs for each of the externally visible global variables.
ConstructGlobalVariableDIEs();
// Create DIEs for each of the externally visible subprograms.
ConstructSubprograms();
// Prime section data.
SectionMap.insert(TAI->getTextSection());