Split the AST LoopStatement type into separate types for do/while,...

src/usage-analyzer.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 141 matching lines @@
   for (int i = cases->length(); i-- > 0;) {
     WeightScaler ws(this, static_cast<float>(1.0 / cases->length()));
     CaseClause* clause = cases->at(i);
     if (!clause->is_default())
       Read(clause->label());
     VisitStatements(clause->statements());
   }
 }
 
 
-void UsageComputer::VisitLoopStatement(LoopStatement* node) {
-  if (node->init() != NULL)
-    Visit(node->init());
+void UsageComputer::VisitDoWhileStatement(DoWhileStatement* node) {
+  WeightScaler ws(this, 10.0);
+  Read(node->cond());
+  Visit(node->body());
+}
+
+
+void UsageComputer::VisitWhileStatement(WhileStatement* node) {
+  WeightScaler ws(this, 10.0);
+  Read(node->cond());
+  Visit(node->body());
+}
+
+
+void UsageComputer::VisitForStatement(ForStatement* node) {
+  if (node->init() != NULL) Visit(node->init());
   { WeightScaler ws(this, 10.0);  // executed in each iteration
-    if (node->cond() != NULL)
-      Read(node->cond());
-    if (node->next() != NULL)
-      Visit(node->next());
+    if (node->cond() != NULL) Read(node->cond());
+    if (node->next() != NULL) Visit(node->next());
     Visit(node->body());
   }
 }
 
 
 void UsageComputer::VisitForInStatement(ForInStatement* node) {
   WeightScaler ws(this, 10.0);
   Write(node->each());
   Read(node->enumerable());
   Visit(node->body());
 }
 
 
-void UsageComputer::VisitTryCatch(TryCatch* node) {
+void UsageComputer::VisitTryCatchStatement(TryCatchStatement* node) {
   Visit(node->try_block());
   { WeightScaler ws(this, 0.25);
     Write(node->catch_var());
     Visit(node->catch_block());
   }
 }
 
 
-void UsageComputer::VisitTryFinally(TryFinally* node) {
+void UsageComputer::VisitTryFinallyStatement(TryFinallyStatement* node) {
   Visit(node->try_block());
   Visit(node->finally_block());
 }
 
 
 void UsageComputer::VisitDebuggerStatement(DebuggerStatement* node) {
 }
 
 
 void UsageComputer::VisitFunctionLiteral(FunctionLiteral* node) {
@@ skipping 203 matching lines @@
 // ----------------------------------------------------------------------------
 // Interface to variable usage analysis
 
 bool AnalyzeVariableUsage(FunctionLiteral* lit) {
   if (!FLAG_usage_computation) return true;
   HistogramTimerScope timer(&Counters::usage_analysis);
   return UsageComputer::Traverse(lit);
 }
 
 } }  // namespace v8::internal