Debug Info: Fix a problem that resulted in missing DW_AT_specifications
for C++ constructors.
If the DIType for a class was generated by
CGDebugInfo::createContextChain(), the cache contains only a
limited DIType wihtout any declarations. Since EmitFunctionStart()
needs to find the canonical declaration for each method, we
construct the complete type before emitting any method.
rdar://problem/13116508
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181561 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 1da4e87..717ed17 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -1232,6 +1232,23 @@
return !isTriviallyRecursive(F);
}
+/// If the type for the method's class was generated by
+/// CGDebugInfo::createContextChain(), the cache contains only a
+/// limited DIType without any declarations. Since EmitFunctionStart()
+/// needs to find the canonical declaration for each method, we need
+/// to construct the complete type prior to emitting the method.
+void CodeGenModule::CompleteDIClassType(const CXXMethodDecl* D) {
+ if (!D->isInstance())
+ return;
+
+ if (CGDebugInfo *DI = getModuleDebugInfo())
+ if (getCodeGenOpts().getDebugInfo() >= CodeGenOptions::LimitedDebugInfo) {
+ const PointerType *ThisPtr =
+ cast<PointerType>(D->getThisType(getContext()));
+ DI->getOrCreateRecordType(ThisPtr->getPointeeType(), D->getLocation());
+ }
+}
+
void CodeGenModule::EmitGlobalDefinition(GlobalDecl GD) {
const ValueDecl *D = cast<ValueDecl>(GD.getDecl());
@@ -1246,6 +1263,7 @@
return;
if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
+ CompleteDIClassType(Method);
// Make sure to emit the definition(s) before we emit the thunks.
// This is necessary for the generation of certain thunks.
if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(Method))