Replace empty code with MissingFeature

Author: andykaylor

clang/include/clang/CIR/MissingFeatures.h

@@ -215,6 +215,7 @@ struct MissingFeatures {
   static bool coverageMapping() { return false; }
   static bool peepholeProtection() { return false; }
   static bool instrumentation() { return false; }
+  static bool cleanupAfterErrorDiags() { return false; }
 
   // Missing types
   static bool dataMemberType() { return false; }

clang/lib/CIR/CodeGen/CIRGenerator.cpp

@@ -74,13 +74,9 @@ void CIRGenerator::HandleTranslationUnit(ASTContext &astContext) {
   if (!diags.hasErrorOccurred() && cgm)
     cgm->release();
 
-  // If there are errors before or when releasing the CGM, reset the module to
+  // If there are errors before or when releasing the cgm, reset the module to
   // stop here before invoking the backend.
-  if (diags.hasErrorOccurred()) {
-    if (cgm)
-      // TODO: cgm->clear();
-      return;
-  }
+  assert(!cir::MissingFeatures::cleanupAfterErrorDiags());
 }
 
 void CIRGenerator::HandleInlineFunctionDefinition(FunctionDecl *d) {