Print reason for disabling optimization. Kill --trace-bailout flag.

src/hydrogen.cc

 // Copyright 2012 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 3181 matching lines @@
 
 
 #define CHECK_ALIVE(call)                                       \
   do {                                                          \
     call;                                                       \
     if (HasStackOverflow() || current_block() == NULL) return;  \
   } while (false)
 
 
 void HGraphBuilder::Bailout(const char* reason) {
-  if (FLAG_trace_bailout) {
-    SmartArrayPointer<char> name(
-        info()->shared_info()->DebugName()->ToCString());
-    PrintF("Bailout in HGraphBuilder: @\"%s\": %s\n", *name, reason);
-  }
+  info()->set_bailout_reason(reason);
   SetStackOverflow();
 }
 
 
 void HGraphBuilder::VisitForEffect(Expression* expr) {
   EffectContext for_effect(this);
   Visit(expr);
 }
 
 
@@ skipping 3772 matching lines @@
     return false;
   }
 
   // Parse and allocate variables.
   CompilationInfo target_info(target, zone());
   if (!ParserApi::Parse(&target_info, kNoParsingFlags) ||
       !Scope::Analyze(&target_info)) {
     if (target_info.isolate()->has_pending_exception()) {
       // Parse or scope error, never optimize this function.
       SetStackOverflow();
-      target_shared->DisableOptimization();
+      target_shared->DisableOptimization("parse/scope error");
     }
     TraceInline(target, caller, "parse failure");
     return false;
   }
 
   if (target_info.scope()->num_heap_slots() > 0) {
     TraceInline(target, caller, "target has context-allocated variables");
     return false;
   }
   FunctionLiteral* function = target_info.function();
@@ skipping 134 matching lines @@
                     graph()->GetArgumentsObject());
   }
 
 
   VisitDeclarations(target_info.scope()->declarations());
   VisitStatements(function->body());
   if (HasStackOverflow()) {
     // Bail out if the inline function did, as we cannot residualize a call
     // instead.
     TraceInline(target, caller, "inline graph construction failed");
-    target_shared->DisableOptimization();
+    target_shared->DisableOptimization("inlining bailed out");
     inline_bailout_ = true;
     delete target_state;
     return true;
   }
 
   // Update inlined nodes count.
   inlined_count_ += nodes_added;
 
   ASSERT(unoptimized_code->kind() == Code::FUNCTION);
   Handle<Object> maybe_type_info(unoptimized_code->type_feedback_info());
@@ skipping 2808 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal