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Refactor.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137689 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2011-08-15 23:47:24 +00:00
parent a9c989d55a
commit 02e603f87a
2 changed files with 68 additions and 49 deletions
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109
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -574,6 +574,63 @@ void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
return;
}
/// collectInfoFromNamedMDNodes - Collect debug info from named mdnodes such
/// as llvm.dbg.enum and llvm.dbg.ty
void DwarfDebug::collectInfoFromNamedMDNodes(Module *M) {
if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.enum"))
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIType Ty(NMD->getOperand(i));
getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
}
if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.ty"))
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIType Ty(NMD->getOperand(i));
getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
}
}
/// collectLegacyDebugInfo - Collect debug info using DebugInfoFinder.
/// FIXME - Remove this when dragon-egg and llvm-gcc switch to DIBuilder.
bool DwarfDebug::collectLegacyDebugInfo(Module *M) {
DebugInfoFinder DbgFinder;
DbgFinder.processModule(*M);
bool HasDebugInfo = false;
// Scan all the compile-units to see if there are any marked as the main
// unit. If not, we do not generate debug info.
for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
E = DbgFinder.compile_unit_end(); I != E; ++I) {
if (DICompileUnit(*I).isMain()) {
HasDebugInfo = true;
break;
}
}
if (!HasDebugInfo) return false;
// Create all the compile unit DIEs.
for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
E = DbgFinder.compile_unit_end(); I != E; ++I)
constructCompileUnit(*I);
// Create DIEs for each global variable.
for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
E = DbgFinder.global_variable_end(); I != E; ++I) {
const MDNode *N = *I;
if (DIGlobalVariable(N).getVersion() <= LLVMDebugVersion9)
constructGlobalVariableDIE(getCompileUnit(N), N);
}
// Create DIEs for each subprogram.
for (DebugInfoFinder::iterator I = DbgFinder.subprogram_begin(),
E = DbgFinder.subprogram_end(); I != E; ++I) {
const MDNode *N = *I;
constructSubprogramDIE(getCompileUnit(N), N);
}
return HasDebugInfo;
}
/// beginModule - Emit all Dwarf sections that should come prior to the
/// content. Create global DIEs and emit initial debug info sections.
/// This is invoked by the target AsmPrinter.
@ -608,43 +665,10 @@ void DwarfDebug::beginModule(Module *M) {
constructSubprogramDIE(getCompileUnit(N), N);
}
} else {
} else if (!collectLegacyDebugInfo(M))
return;
DebugInfoFinder DbgFinder;
DbgFinder.processModule(*M);
bool HasDebugInfo = false;
// Scan all the compile-units to see if there are any marked as the main
// unit. If not, we do not generate debug info.
for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
E = DbgFinder.compile_unit_end(); I != E; ++I) {
if (DICompileUnit(*I).isMain()) {
HasDebugInfo = true;
break;
}
}
if (!HasDebugInfo) return;
// Create all the compile unit DIEs.
for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
E = DbgFinder.compile_unit_end(); I != E; ++I)
constructCompileUnit(*I);
// Create DIEs for each global variable.
for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
E = DbgFinder.global_variable_end(); I != E; ++I) {
const MDNode *N = *I;
if (DIGlobalVariable(N).getVersion() <= LLVMDebugVersion9)
constructGlobalVariableDIE(getCompileUnit(N), N);
}
// Create DIEs for each subprogram.
for (DebugInfoFinder::iterator I = DbgFinder.subprogram_begin(),
E = DbgFinder.subprogram_end(); I != E; ++I) {
const MDNode *N = *I;
constructSubprogramDIE(getCompileUnit(N), N);
}
}
collectInfoFromNamedMDNodes(M);
// Tell MMI that we have debug info.
MMI->setDebugInfoAvailability(true);
@ -652,19 +676,6 @@ void DwarfDebug::beginModule(Module *M) {
// Emit initial sections.
EmitSectionLabels();
//getOrCreateTypeDIE
if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.enum"))
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIType Ty(NMD->getOperand(i));
getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
}
if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.ty"))
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIType Ty(NMD->getOperand(i));
getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
}
// Prime section data.
SectionMap.insert(Asm->getObjFileLowering().getTextSection());
}

8
lib/CodeGen/AsmPrinter/DwarfDebug.h
View File

@ -468,6 +468,14 @@ public:
DwarfDebug(AsmPrinter *A, Module *M);
~DwarfDebug();
/// collectInfoFromNamedMDNodes - Collect debug info from named mdnodes such
/// as llvm.dbg.enum and llvm.dbg.ty
void collectInfoFromNamedMDNodes(Module *M);
/// collectLegacyDebugInfo - Collect debug info using DebugInfoFinder.
/// FIXME - Remove this when dragon-egg and llvm-gcc switch to DIBuilder.
bool collectLegacyDebugInfo(Module *M);
/// beginModule - Emit all Dwarf sections that should come prior to the
/// content.
void beginModule(Module *M);