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Diffstat (limited to 'lib/CodeGen/CGDebugInfo.cpp')
-rw-r--r--lib/CodeGen/CGDebugInfo.cpp292
1 files changed, 189 insertions, 103 deletions
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 34da5f4d99..1f733be1a7 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -524,11 +524,8 @@ llvm::DIDescriptor CGDebugInfo::createContextChain(const Decl *Context) {
if (const RecordDecl *RD = dyn_cast<RecordDecl>(Context)) {
if (!RD->isDependentType()) {
- llvm::DIDescriptor FDContext =
- createContextChain(cast<Decl>(RD->getDeclContext()));
- llvm::DIType Ty = createRecordFwdDecl(RD, FDContext);
-
- RegionMap[Context] = llvm::WeakVH(Ty);
+ llvm::DIType Ty = getOrCreateLimitedType(CGM.getContext().getTypeDeclType(RD),
+ getOrCreateMainFile());
return llvm::DIDescriptor(Ty);
}
}
@@ -557,7 +554,9 @@ llvm::DIType CGDebugInfo::CreatePointeeType(QualType PointeeTy,
RecordDecl *RD = RTy->getDecl();
llvm::DIDescriptor FDContext =
getContextDescriptor(cast<Decl>(RD->getDeclContext()));
- return createRecordFwdDecl(RD, FDContext);
+ llvm::DIType RetTy = createRecordFwdDecl(RD, FDContext);
+ TypeCache[PointeeTy.getAsOpaquePtr()] = RetTy;
+ return RetTy;
}
return getOrCreateType(PointeeTy, Unit);
@@ -654,10 +653,11 @@ llvm::DIType CGDebugInfo::CreateType(const TypedefType *Ty, llvm::DIFile Unit) {
// declared.
unsigned Line = getLineNumber(Ty->getDecl()->getLocation());
const TypedefNameDecl *TyDecl = Ty->getDecl();
+
llvm::DIDescriptor TypedefContext =
getContextDescriptor(cast<Decl>(Ty->getDecl()->getDeclContext()));
-
- return
+
+ return
DBuilder.createTypedef(Src, TyDecl->getName(), Unit, Line, TypedefContext);
}
@@ -1133,8 +1133,6 @@ llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty) {
// Get overall information about the record type for the debug info.
llvm::DIFile DefUnit = getOrCreateFile(RD->getLocation());
- unsigned Line = getLineNumber(RD->getLocation());
- StringRef RDName = RD->getName();
// Records and classes and unions can all be recursive. To handle them, we
// first generate a debug descriptor for the struct as a forward declaration.
@@ -1143,28 +1141,21 @@ llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty) {
// may refer to the forward decl if the struct is recursive) and replace all
// uses of the forward declaration with the final definition.
- llvm::DIDescriptor RDContext;
- if (CGM.getCodeGenOpts().LimitDebugInfo)
- RDContext = createContextChain(cast<Decl>(RD->getDeclContext()));
- else
- RDContext = getContextDescriptor(cast<Decl>(RD->getDeclContext()));
-
- // If this is just a forward declaration, construct an appropriately
- // marked node and just return it.
- if (!RD->getDefinition())
- return createRecordFwdDecl(RD, RDContext);
-
- llvm::DIType FwdDecl = DBuilder.createTemporaryType(DefUnit);
+ llvm::DIType FwdDecl = getOrCreateLimitedType(QualType(Ty, 0), DefUnit);
+ if (FwdDecl.isForwardDecl())
+ return FwdDecl;
+
llvm::MDNode *MN = FwdDecl;
llvm::TrackingVH<llvm::MDNode> FwdDeclNode = MN;
- // Otherwise, insert it into the TypeCache so that recursive uses will find
- // it.
- TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = FwdDecl;
+
// Push the struct on region stack.
LexicalBlockStack.push_back(FwdDeclNode);
RegionMap[Ty->getDecl()] = llvm::WeakVH(FwdDecl);
+ // Add this to the completed types cache since we're completing it.
+ CompletedTypeCache[QualType(Ty, 0).getAsOpaquePtr()] = FwdDecl;
+
// Convert all the elements.
SmallVector<llvm::Value *, 16> EltTys;
@@ -1196,50 +1187,20 @@ llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty) {
if (RI != RegionMap.end())
RegionMap.erase(RI);
- uint64_t Size = CGM.getContext().getTypeSize(Ty);
- uint64_t Align = CGM.getContext().getTypeAlign(Ty);
llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys);
- llvm::MDNode *RealDecl = NULL;
-
+ // FIXME: Magic numbers ahoy! These should be changed when we
+ // get some enums in llvm/Analysis/DebugInfo.h to refer to
+ // them.
if (RD->isUnion())
- RealDecl = DBuilder.createUnionType(RDContext, RDName, DefUnit, Line,
- Size, Align, 0, Elements);
+ MN->replaceOperandWith(10, Elements);
else if (CXXDecl) {
- RDName = getClassName(RD);
- // A class's primary base or the class itself contains the vtable.
- llvm::MDNode *ContainingType = NULL;
- const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(RD);
- if (const CXXRecordDecl *PBase = RL.getPrimaryBase()) {
- // Seek non virtual primary base root.
- while (1) {
- const ASTRecordLayout &BRL = CGM.getContext().getASTRecordLayout(PBase);
- const CXXRecordDecl *PBT = BRL.getPrimaryBase();
- if (PBT && !BRL.isPrimaryBaseVirtual())
- PBase = PBT;
- else
- break;
- }
- ContainingType =
- getOrCreateType(QualType(PBase->getTypeForDecl(), 0), DefUnit);
- }
- else if (CXXDecl->isDynamicClass())
- ContainingType = FwdDecl;
-
- // FIXME: This could be a struct type giving a default visibility different
- // than C++ class type, but needs llvm metadata changes first.
- RealDecl = DBuilder.createClassType(RDContext, RDName, DefUnit, Line,
- Size, Align, 0, 0, llvm::DIType(),
- Elements, ContainingType,
- TParamsArray);
+ MN->replaceOperandWith(10, Elements);
+ MN->replaceOperandWith(13, TParamsArray);
} else
- RealDecl = DBuilder.createStructType(RDContext, RDName, DefUnit, Line,
- Size, Align, 0, Elements);
+ MN->replaceOperandWith(10, Elements);
- // Now that we have a real decl for the struct, replace anything using the
- // old decl with the new one. This will recursively update the debug info.
- llvm::DIType(FwdDeclNode).replaceAllUsesWith(RealDecl);
- RegionMap[Ty->getDecl()] = llvm::WeakVH(RealDecl);
- return llvm::DIType(RealDecl);
+ RegionMap[Ty->getDecl()] = llvm::WeakVH(MN);
+ return llvm::DIType(MN);
}
/// CreateType - get objective-c object type.
@@ -1274,22 +1235,28 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCInterfaceType *Ty,
}
ID = Def;
- // To handle a recursive interface, we first generate a debug descriptor
- // for the struct as a forward declaration. Then (if it is a definition)
- // we go through and get debug info for all of its members. Finally, we
- // create a descriptor for the complete type (which may refer to the
- // forward decl if the struct is recursive) and replace all uses of the
- // forward declaration with the final definition.
- llvm::DIType FwdDecl = DBuilder.createTemporaryType(DefUnit);
+ // Bit size, align and offset of the type.
+ uint64_t Size = CGM.getContext().getTypeSize(Ty);
+ uint64_t Align = CGM.getContext().getTypeAlign(Ty);
- llvm::MDNode *MN = FwdDecl;
- llvm::TrackingVH<llvm::MDNode> FwdDeclNode = MN;
+ unsigned Flags = 0;
+ if (ID->getImplementation())
+ Flags |= llvm::DIDescriptor::FlagObjcClassComplete;
+
+ llvm::DIType RealDecl =
+ DBuilder.createStructType(Unit, ID->getName(), DefUnit,
+ Line, Size, Align, Flags,
+ llvm::DIArray(), RuntimeLang);
+
// Otherwise, insert it into the TypeCache so that recursive uses will find
// it.
- TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = FwdDecl;
+ TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = RealDecl;
// Push the struct on region stack.
+ llvm::MDNode *MN = RealDecl;
+ llvm::TrackingVH<llvm::MDNode> FwdDeclNode = MN;
+
LexicalBlockStack.push_back(FwdDeclNode);
- RegionMap[Ty->getDecl()] = llvm::WeakVH(FwdDecl);
+ RegionMap[Ty->getDecl()] = llvm::WeakVH(RealDecl);
// Convert all the elements.
SmallVector<llvm::Value *, 16> EltTys;
@@ -1302,7 +1269,7 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCInterfaceType *Ty,
return llvm::DIType();
llvm::DIType InhTag =
- DBuilder.createInheritance(FwdDecl, SClassTy, 0, 0);
+ DBuilder.createInheritance(RealDecl, SClassTy, 0, 0);
EltTys.push_back(InhTag);
}
@@ -1381,31 +1348,9 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCInterfaceType *Ty,
}
llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys);
-
+ RealDecl->replaceOperandWith(10, Elements);
+
LexicalBlockStack.pop_back();
- llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator RI =
- RegionMap.find(Ty->getDecl());
- if (RI != RegionMap.end())
- RegionMap.erase(RI);
-
- // Bit size, align and offset of the type.
- uint64_t Size = CGM.getContext().getTypeSize(Ty);
- uint64_t Align = CGM.getContext().getTypeAlign(Ty);
-
- unsigned Flags = 0;
- if (ID->getImplementation())
- Flags |= llvm::DIDescriptor::FlagObjcClassComplete;
-
- llvm::DIType RealDecl =
- DBuilder.createStructType(Unit, ID->getName(), DefUnit,
- Line, Size, Align, Flags,
- Elements, RuntimeLang);
-
- // Now that we have a real decl for the struct, replace anything using the
- // old decl with the new one. This will recursively update the debug info.
- llvm::DIType(FwdDeclNode).replaceAllUsesWith(RealDecl);
- RegionMap[ID] = llvm::WeakVH(RealDecl);
-
return RealDecl;
}
@@ -1637,6 +1582,26 @@ llvm::DIType CGDebugInfo::getTypeOrNull(QualType Ty) {
return llvm::DIType();
}
+/// getCompletedTypeOrNull - Get the type from the cache or return null if it
+/// doesn't exist.
+llvm::DIType CGDebugInfo::getCompletedTypeOrNull(QualType Ty) {
+
+ // Unwrap the type as needed for debug information.
+ Ty = UnwrapTypeForDebugInfo(Ty);
+
+ // Check for existing entry.
+ llvm::DenseMap<void *, llvm::WeakVH>::iterator it =
+ CompletedTypeCache.find(Ty.getAsOpaquePtr());
+ if (it != CompletedTypeCache.end()) {
+ // Verify that the debug info still exists.
+ if (&*it->second)
+ return llvm::DIType(cast<llvm::MDNode>(it->second));
+ }
+
+ return llvm::DIType();
+}
+
+
/// getOrCreateType - Get the type from the cache or create a new
/// one if necessary.
llvm::DIType CGDebugInfo::getOrCreateType(QualType Ty, llvm::DIFile Unit) {
@@ -1646,14 +1611,18 @@ llvm::DIType CGDebugInfo::getOrCreateType(QualType Ty, llvm::DIFile Unit) {
// Unwrap the type as needed for debug information.
Ty = UnwrapTypeForDebugInfo(Ty);
- llvm::DIType T = getTypeOrNull(Ty);
+ llvm::DIType T = getCompletedTypeOrNull(Ty);
+
if (T.Verify()) return T;
// Otherwise create the type.
llvm::DIType Res = CreateTypeNode(Ty, Unit);
-
+
// And update the type cache.
- TypeCache[Ty.getAsOpaquePtr()] = Res;
+ TypeCache[Ty.getAsOpaquePtr()] = Res;
+
+ if (!Res.isForwardDecl())
+ CompletedTypeCache[Ty.getAsOpaquePtr()] = Res;
return Res;
}
@@ -1737,6 +1706,123 @@ llvm::DIType CGDebugInfo::CreateTypeNode(QualType Ty, llvm::DIFile Unit) {
return llvm::DIType();
}
+/// getOrCreateLimitedType - Get the type from the cache or create a new
+/// limited type if necessary.
+llvm::DIType CGDebugInfo::getOrCreateLimitedType(QualType Ty,
+ llvm::DIFile Unit) {
+ if (Ty.isNull())
+ return llvm::DIType();
+
+ // Unwrap the type as needed for debug information.
+ Ty = UnwrapTypeForDebugInfo(Ty);
+
+ llvm::DIType T = getTypeOrNull(Ty);
+
+ // We may have cached a forward decl when we could have created
+ // a non-forward decl. Go ahead and create a non-forward decl
+ // now.
+ if (T.Verify() && !T.isForwardDecl()) return T;
+
+ // Otherwise create the type.
+ llvm::DIType Res = CreateLimitedTypeNode(Ty, Unit);
+
+ // And update the type cache.
+ TypeCache[Ty.getAsOpaquePtr()] = Res;
+ return Res;
+}
+
+// TODO: Currently used for context chains when limiting debug info.
+llvm::DIType CGDebugInfo::CreateLimitedType(const RecordType *Ty) {
+ RecordDecl *RD = Ty->getDecl();
+
+ // Get overall information about the record type for the debug info.
+ llvm::DIFile DefUnit = getOrCreateFile(RD->getLocation());
+ unsigned Line = getLineNumber(RD->getLocation());
+ StringRef RDName = RD->getName();
+
+ llvm::DIDescriptor RDContext;
+ if (CGM.getCodeGenOpts().LimitDebugInfo)
+ RDContext = createContextChain(cast<Decl>(RD->getDeclContext()));
+ else
+ RDContext = getContextDescriptor(cast<Decl>(RD->getDeclContext()));
+
+ // If this is just a forward declaration, construct an appropriately
+ // marked node and just return it.
+ if (!RD->getDefinition()) {
+ llvm::DIType RTy = createRecordFwdDecl(RD, RDContext);
+ TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = RTy;
+ return RTy;
+ }
+
+ uint64_t Size = CGM.getContext().getTypeSize(Ty);
+ uint64_t Align = CGM.getContext().getTypeAlign(Ty);
+ const CXXRecordDecl *CXXDecl = dyn_cast<CXXRecordDecl>(RD);
+ llvm::MDNode *RealDecl = NULL;
+
+ if (RD->isUnion())
+ RealDecl = DBuilder.createUnionType(RDContext, RDName, DefUnit, Line,
+ Size, Align, 0, llvm::DIArray());
+ else if (CXXDecl) {
+ RDName = getClassName(RD);
+
+ // FIXME: This could be a struct type giving a default visibility different
+ // than C++ class type, but needs llvm metadata changes first.
+ RealDecl = DBuilder.createClassType(RDContext, RDName, DefUnit, Line,
+ Size, Align, 0, 0, llvm::DIType(),
+ llvm::DIArray(), NULL,
+ llvm::DIArray());
+ } else
+ RealDecl = DBuilder.createStructType(RDContext, RDName, DefUnit, Line,
+ Size, Align, 0, llvm::DIArray());
+
+ RegionMap[Ty->getDecl()] = llvm::WeakVH(RealDecl);
+ TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = llvm::DIType(RealDecl);
+
+ if (CXXDecl) {
+ // A class's primary base or the class itself contains the vtable.
+ llvm::MDNode *ContainingType = NULL;
+ const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(RD);
+ if (const CXXRecordDecl *PBase = RL.getPrimaryBase()) {
+ // Seek non virtual primary base root.
+ while (1) {
+ const ASTRecordLayout &BRL = CGM.getContext().getASTRecordLayout(PBase);
+ const CXXRecordDecl *PBT = BRL.getPrimaryBase();
+ if (PBT && !BRL.isPrimaryBaseVirtual())
+ PBase = PBT;
+ else
+ break;
+ }
+ ContainingType =
+ getOrCreateType(QualType(PBase->getTypeForDecl(), 0), DefUnit);
+ }
+ else if (CXXDecl->isDynamicClass())
+ ContainingType = RealDecl;
+
+ RealDecl->replaceOperandWith(9, ContainingType);
+ }
+ return llvm::DIType(RealDecl);
+}
+
+/// CreateLimitedTypeNode - Create a new debug type node, but only forward
+/// declare composite types that haven't been processed yet.
+llvm::DIType CGDebugInfo::CreateLimitedTypeNode(QualType Ty,llvm::DIFile Unit) {
+
+ // Work out details of type.
+ switch (Ty->getTypeClass()) {
+#define TYPE(Class, Base)
+#define ABSTRACT_TYPE(Class, Base)
+#define NON_CANONICAL_TYPE(Class, Base)
+#define DEPENDENT_TYPE(Class, Base) case Type::Class:
+ #include "clang/AST/TypeNodes.def"
+ llvm_unreachable("Dependent types cannot show up in debug information");
+
+ case Type::Record:
+ return CreateLimitedType(cast<RecordType>(Ty));
+ default:
+ return CreateTypeNode(Ty, Unit);
+ }
+}
+
/// CreateMemberType - Create new member and increase Offset by FType's size.
llvm::DIType CGDebugInfo::CreateMemberType(llvm::DIFile Unit, QualType FType,
StringRef Name,
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-05 21:06:02 +0000