[Lldb-commits] [lldb] [lldb][DWARF] Delay struct/class/union definition DIE searching when parsing declaration DIEs. (PR #90663)

[David Blaikie via lldb-commits]

================
@@ -1632,27 +1632,34 @@ bool SymbolFileDWARF::CompleteType(CompilerType 
&compiler_type) {
     return true;
   }
 
-  DWARFDIE dwarf_die = GetDIE(die_it->getSecond());
-  if (dwarf_die) {
-    // Once we start resolving this type, remove it from the forward
-    // declaration map in case anyone child members or other types require this
-    // type to get resolved. The type will get resolved when all of the calls
-    // to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition are done.
-    GetForwardDeclCompilerTypeToDIE().erase(die_it);
-
-    Type *type = GetDIEToType().lookup(dwarf_die.GetDIE());
+  // Once we start resolving this type, remove it from the forward
+  // declaration map in case anyone's child members or other types require this
+  // type to get resolved.
+  DWARFDIE dwarf_die = GetDIE(die_it->second);
+  GetForwardDeclCompilerTypeToDIE().erase(die_it);
+  Type *type = nullptr;
+  if (DWARFASTParser *dwarf_ast = GetDWARFParser(*dwarf_die.GetCU()))
+    type = dwarf_ast->FindDefinitionTypeForDIE(dwarf_die);
+  if (!type)
+    return false;
 
-    Log *log = GetLog(DWARFLog::DebugInfo | DWARFLog::TypeCompletion);
-    if (log)
-      GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
-          log, "{0:x8}: {1} ({2}) '{3}' resolving forward declaration...",
-          dwarf_die.GetID(), DW_TAG_value_to_name(dwarf_die.Tag()),
-          dwarf_die.Tag(), type->GetName().AsCString());
-    assert(compiler_type);
-    if (DWARFASTParser *dwarf_ast = GetDWARFParser(*dwarf_die.GetCU()))
-      return dwarf_ast->CompleteTypeFromDWARF(dwarf_die, type, compiler_type);
+  die_it = GetForwardDeclCompilerTypeToDIE().find(
+      compiler_type_no_qualifiers.GetOpaqueQualType());
+  if (die_it != GetForwardDeclCompilerTypeToDIE().end()) {
+    dwarf_die = GetDIE(die_it->getSecond());
+    GetForwardDeclCompilerTypeToDIE().erase(die_it);
   }
-  return false;
+
+  Log *log = GetLog(DWARFLog::DebugInfo | DWARFLog::TypeCompletion);
+  if (log)
----------------
dwblaikie wrote:

```
if (Log *log = GetLog(DWARFLog::DebugInfo | DWARFLog::TypeCompletion))
```

https://github.com/llvm/llvm-project/pull/90663
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