Add a pass for the fast compiler to label expression nodes....

src/compiler.cc

 // Copyright 2009 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 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "bootstrapper.h"
 #include "codegen-inl.h"
 #include "compilation-cache.h"
 #include "compiler.h"
+#include "data-flow.h"
 #include "debug.h"
 #include "fast-codegen.h"
 #include "full-codegen.h"
 #include "oprofile-agent.h"
 #include "rewriter.h"
 #include "scopes.h"
 #include "usage-analyzer.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 59 matching lines @@
   if (FLAG_always_full_compiler || (FLAG_full_compiler && is_run_once)) {
     FullCodeGenSyntaxChecker checker;
     checker.Check(literal);
     if (checker.has_supported_syntax()) {
       return FullCodeGenerator::MakeCode(literal, script, is_eval);
     }
   } else if (FLAG_always_fast_compiler ||
              (FLAG_fast_compiler && !is_run_once)) {
     FastCodeGenSyntaxChecker checker;
     checker.Check(literal);
+    if (checker.has_supported_syntax()) {
+      AstLabeler labeler;
+      labeler.Label(literal);
+    }
     // Does not yet generate code.
   }
 
   return CodeGenerator::MakeCode(literal, script, is_eval);
 }
 
 
 static bool IsValidJSON(FunctionLiteral* lit) {
   if (lit->body()->length() != 1)
     return false;
@@ skipping 368 matching lines @@
       if (checker.has_supported_syntax()) {
         code = FullCodeGenerator::MakeCode(literal,
                                            script,
                                            false);  // Not eval.
         is_compiled = true;
       }
     } else if (FLAG_always_fast_compiler ||
                (FLAG_fast_compiler && !is_run_once)) {
       FastCodeGenSyntaxChecker checker;
       checker.Check(literal);
+      if (checker.has_supported_syntax()) {
+        AstLabeler label_nodes;
+        label_nodes.Label(literal);
+      }
       // Generate no code.
     }
 
     if (!is_compiled) {
       // We fall back to the classic V8 code generator.
       code = CodeGenerator::MakeCode(literal,
                                      script,
                                      false);  // Not eval.
     }
 
@@ skipping 51 matching lines @@
   fun->shared()->set_is_toplevel(is_toplevel);
   fun->shared()->set_inferred_name(*lit->inferred_name());
   fun->shared()->SetThisPropertyAssignmentsInfo(
       lit->has_only_simple_this_property_assignments(),
       *lit->this_property_assignments());
   fun->shared()->set_try_full_codegen(lit->try_full_codegen());
 }
 
 
 } }  // namespace v8::internal