Modified clang driver option -dump-live-variables to (optionally) use the

--analyze-function option to analyze specific functions.

llvm-svn: 47498

clang/Driver/ASTConsumers.cpp

@@ -516,6 +516,8 @@ namespace {
   class LivenessVisitor : public CFGVisitor {
     SourceManager *SM;
   public:
+    LivenessVisitor(const std::string& fname) : CFGVisitor(fname) {}
+    
     virtual void Initialize(ASTContext &Context) {
       SM = &Context.getSourceManager();
     }
@@ -528,8 +530,8 @@ namespace {
   };
 } // end anonymous namespace
   
-ASTConsumer *clang::CreateLiveVarAnalyzer() {
-  return new LivenessVisitor();
+ASTConsumer *clang::CreateLiveVarAnalyzer(const std::string& fname) {
+  return new LivenessVisitor(fname);
 }
 
 //===----------------------------------------------------------------------===//

clang/Driver/ASTConsumers.h

@@ -36,7 +36,7 @@ ASTConsumer *CreateASTViewer();
 
 ASTConsumer *CreateCFGDumper(bool ViewGraphs, const std::string& FName);
 
-ASTConsumer *CreateLiveVarAnalyzer();
+ASTConsumer *CreateLiveVarAnalyzer(const std::string& fname);
 
 ASTConsumer *CreateDeadStoreChecker(Diagnostic &Diags);
 

clang/Driver/clang.cpp

@@ -982,7 +982,7 @@ static ASTConsumer* CreateASTConsumer(const std::string& InFile,
                              AnalyzeSpecificFunction);
       
     case AnalysisLiveVariables:
-      return CreateLiveVarAnalyzer();
+      return CreateLiveVarAnalyzer(AnalyzeSpecificFunction);
       
     case WarnDeadStores:    
       return CreateDeadStoreChecker(Diag);