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path: root/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfDebug.cpp173
1 files changed, 82 insertions, 91 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 45e0aaa501..d096c0b9aa 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -465,7 +465,7 @@ unsigned DwarfDebug::GetOrCreateSourceID(StringRef FileName,
/// constructCompileUnit - Create new CompileUnit for the given
/// metadata node with tag DW_TAG_compile_unit.
-void DwarfDebug::constructCompileUnit(const MDNode *N) {
+CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) {
DICompileUnit DIUnit(N);
StringRef FN = DIUnit.getFilename();
StringRef Dir = DIUnit.getDirectory();
@@ -507,35 +507,7 @@ void DwarfDebug::constructCompileUnit(const MDNode *N) {
if (!FirstCU)
FirstCU = NewCU;
CUMap.insert(std::make_pair(N, NewCU));
-}
-
-/// getCompileUnit - Get CompileUnit DIE.
-CompileUnit *DwarfDebug::getCompileUnit(const MDNode *N) const {
- assert (N && "Invalid DwarfDebug::getCompileUnit argument!");
- DIDescriptor D(N);
- const MDNode *CUNode = NULL;
- if (D.isCompileUnit())
- CUNode = N;
- else if (D.isSubprogram())
- CUNode = DISubprogram(N).getCompileUnit();
- else if (D.isType())
- CUNode = DIType(N).getCompileUnit();
- else if (D.isGlobalVariable())
- CUNode = DIGlobalVariable(N).getCompileUnit();
- else if (D.isVariable())
- CUNode = DIVariable(N).getCompileUnit();
- else if (D.isNameSpace())
- CUNode = DINameSpace(N).getCompileUnit();
- else if (D.isFile())
- CUNode = DIFile(N).getCompileUnit();
- else
- return FirstCU;
-
- DenseMap<const MDNode *, CompileUnit *>::const_iterator I
- = CUMap.find(CUNode);
- if (I == CUMap.end())
- return FirstCU;
- return I->second;
+ return NewCU;
}
/// constructGlobalVariableDIE - Construct global variable DIE.
@@ -571,22 +543,39 @@ void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
// Expose as global.
TheCU->addGlobal(SP.getName(), SubprogramDie);
+ SPMap[N] = 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.sp"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ const MDNode *N = NMD->getOperand(i);
+ if (CompileUnit *CU = CUMap.lookup(DISubprogram(N).getCompileUnit()))
+ constructSubprogramDIE(CU, N);
+ }
+
+ if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.gv"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ const MDNode *N = NMD->getOperand(i);
+ if (CompileUnit *CU = CUMap.lookup(DIGlobalVariable(N).getCompileUnit()))
+ constructGlobalVariableDIE(CU, N);
+ }
+
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 (CompileUnit *CU = CUMap.lookup(Ty.getCompileUnit()))
+ CU->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);
+ if (CompileUnit *CU = CUMap.lookup(Ty.getCompileUnit()))
+ CU->getOrCreateTypeDIE(Ty);
}
}
@@ -617,14 +606,16 @@ bool DwarfDebug::collectLegacyDebugInfo(Module *M) {
for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
E = DbgFinder.global_variable_end(); I != E; ++I) {
const MDNode *N = *I;
- constructGlobalVariableDIE(getCompileUnit(N), N);
+ if (CompileUnit *CU = CUMap.lookup(DIGlobalVariable(N).getCompileUnit()))
+ constructGlobalVariableDIE(CU, 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);
+ if (CompileUnit *CU = CUMap.lookup(DISubprogram(N).getCompileUnit()))
+ constructSubprogramDIE(CU, N);
}
return HasDebugInfo;
@@ -641,29 +632,22 @@ void DwarfDebug::beginModule(Module *M) {
// module using debug info finder to collect debug info.
NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu");
if (CU_Nodes) {
-
- NamedMDNode *GV_Nodes = M->getNamedMetadata("llvm.dbg.gv");
- NamedMDNode *SP_Nodes = M->getNamedMetadata("llvm.dbg.sp");
- if (!GV_Nodes && !SP_Nodes)
- // If there are not any global variables or any functions then
- // there is not any debug info in this module.
- return;
-
- for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i)
- constructCompileUnit(CU_Nodes->getOperand(i));
-
- if (GV_Nodes)
- for (unsigned i = 0, e = GV_Nodes->getNumOperands(); i != e; ++i) {
- const MDNode *N = GV_Nodes->getOperand(i);
- constructGlobalVariableDIE(getCompileUnit(N), N);
- }
-
- if (SP_Nodes)
- for (unsigned i = 0, e = SP_Nodes->getNumOperands(); i != e; ++i) {
- const MDNode *N = SP_Nodes->getOperand(i);
- constructSubprogramDIE(getCompileUnit(N), N);
- }
-
+ for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
+ DICompileUnit CUNode(CU_Nodes->getOperand(i));
+ CompileUnit *CU = constructCompileUnit(CUNode);
+ DIArray GVs = CUNode.getGlobalVariables();
+ for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i)
+ constructGlobalVariableDIE(CU, GVs.getElement(i));
+ DIArray SPs = CUNode.getSubprograms();
+ for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
+ constructSubprogramDIE(CU, SPs.getElement(i));
+ DIArray EnumTypes = CUNode.getEnumTypes();
+ for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
+ CU->getOrCreateTypeDIE(EnumTypes.getElement(i));
+ DIArray RetainedTypes = CUNode.getRetainedTypes();
+ for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
+ CU->getOrCreateTypeDIE(RetainedTypes.getElement(i));
+ }
} else if (!collectLegacyDebugInfo(M))
return;
@@ -685,39 +669,44 @@ void DwarfDebug::endModule() {
if (!FirstCU) return;
const Module *M = MMI->getModule();
DenseMap<const MDNode *, LexicalScope *> DeadFnScopeMap;
- if (NamedMDNode *AllSPs = M->getNamedMetadata("llvm.dbg.sp")) {
- for (unsigned SI = 0, SE = AllSPs->getNumOperands(); SI != SE; ++SI) {
- if (ProcessedSPNodes.count(AllSPs->getOperand(SI)) != 0) continue;
- DISubprogram SP(AllSPs->getOperand(SI));
- if (!SP.Verify()) continue;
-
- // Collect info for variables that were optimized out.
- if (!SP.isDefinition()) continue;
- StringRef FName = SP.getLinkageName();
- if (FName.empty())
- FName = SP.getName();
- NamedMDNode *NMD = getFnSpecificMDNode(*(MMI->getModule()), FName);
- if (!NMD) continue;
- unsigned E = NMD->getNumOperands();
- if (!E) continue;
- LexicalScope *Scope = new LexicalScope(NULL, DIDescriptor(SP), NULL,
- false);
- DeadFnScopeMap[SP] = Scope;
- SmallVector<DbgVariable, 8> Variables;
- for (unsigned I = 0; I != E; ++I) {
- DIVariable DV(NMD->getOperand(I));
- if (!DV.Verify()) continue;
- Variables.push_back(DbgVariable(DV, NULL));
- }
- // Construct subprogram DIE and add variables DIEs.
- CompileUnit *SPCU = getCompileUnit(SP);
- constructSubprogramDIE(SPCU, SP);
- DIE *ScopeDIE = SPCU->getDIE(SP);
- for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
- if (DIE *VariableDIE =
- SPCU->constructVariableDIE(&Variables[i], Scope->isAbstractScope()))
- ScopeDIE->addChild(VariableDIE);
+ // Collect info for variables that were optimized out.
+ if (NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu")) {
+ for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
+ DICompileUnit TheCU(CU_Nodes->getOperand(i));
+ DIArray Subprograms = TheCU.getSubprograms();
+ for (unsigned i = 0, e = Subprograms.getNumElements(); i != e; ++i) {
+ DISubprogram SP(Subprograms.getElement(i));
+ if (ProcessedSPNodes.count(SP) != 0) continue;
+ if (!SP.Verify()) continue;
+ if (!SP.isDefinition()) continue;
+ StringRef FName = SP.getLinkageName();
+ if (FName.empty())
+ FName = SP.getName();
+ NamedMDNode *NMD = getFnSpecificMDNode(*(MMI->getModule()), FName);
+ if (!NMD) continue;
+ unsigned E = NMD->getNumOperands();
+ if (!E) continue;
+ LexicalScope *Scope =
+ new LexicalScope(NULL, DIDescriptor(SP), NULL, false);
+ DeadFnScopeMap[SP] = Scope;
+
+ // Construct subprogram DIE and add variables DIEs.
+ SmallVector<DbgVariable, 8> Variables;
+ for (unsigned I = 0; I != E; ++I) {
+ DIVariable DV(NMD->getOperand(I));
+ if (!DV.Verify()) continue;
+ Variables.push_back(DbgVariable(DV, NULL));
+ }
+ CompileUnit *SPCU = CUMap.lookup(TheCU);
+ assert (SPCU && "Unable to find Compile Unit!");
+ constructSubprogramDIE(SPCU, SP);
+ DIE *ScopeDIE = SPCU->getDIE(SP);
+ for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
+ if (DIE *VariableDIE =
+ SPCU->constructVariableDIE(&Variables[i], Scope->isAbstractScope()))
+ ScopeDIE->addChild(VariableDIE);
+ }
}
}
}
@@ -784,6 +773,7 @@ void DwarfDebug::endModule() {
// clean up.
DeleteContainerSeconds(DeadFnScopeMap);
+ SPMap.clear();
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I)
delete I->second;
@@ -1333,7 +1323,8 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
collectVariableInfo(MF, ProcessedVars);
LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
- CompileUnit *TheCU = getCompileUnit(FnScope->getScopeNode());
+ CompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
+ assert (TheCU && "Unable to find compile unit!");
// Construct abstract scopes.
ArrayRef<LexicalScope *> AList = LScopes.getAbstractScopesList();
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-03 11:54:13 +0000