Print time when tracing compiler.

runtime/vm/compiler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/code_generator.h"
@@ skipping 420 matching lines @@
   LongJump jump;
   isolate->set_long_jump_base(&jump);
   // Skips parsing if we need to only install unoptimized code.
   if (!optimized && !Code::Handle(function.unoptimized_code()).IsNull()) {
     InstallUnoptimizedCode(function);
     isolate->set_long_jump_base(base);
     return Error::null();
   }
   if (setjmp(*jump.Set()) == 0) {
     TIMERSCOPE(time_compilation);
+    Timer per_compile_timer(FLAG_trace_compiler, "Compilation time");
+    per_compile_timer.Start();
     ParsedFunction* parsed_function = new ParsedFunction(function);
     if (FLAG_trace_compiler) {
       OS::Print("Compiling %sfunction: '%s' @ token %"Pd"\n",
                 (optimized ? "optimized " : ""),
                 function.ToFullyQualifiedCString(),
                 function.token_pos());
     }
     Parser::ParseFunction(parsed_function);
     parsed_function->AllocateVariables();
 
     const bool success =
         CompileParsedFunctionHelper(*parsed_function, optimized);
     if (optimized && !success) {
       // Optimizer bailed out. Disable optimizations and to never try again.
       if (FLAG_trace_compiler) {
         OS::Print("--> disabling optimizations for '%s'\n",
                   function.ToFullyQualifiedCString());
       }
       function.set_is_optimizable(false);
       isolate->set_long_jump_base(base);
       return Error::null();
     }
 
     ASSERT(success);
+    per_compile_timer.Stop();
 
     if (FLAG_trace_compiler) {
-      OS::Print("--> '%s' entry: %#"Px"\n",
+      OS::Print("--> '%s' entry: %#"Px" time: %"Pd64" us\n",
                 function.ToFullyQualifiedCString(),
-                Code::Handle(function.CurrentCode()).EntryPoint());
+                Code::Handle(function.CurrentCode()).EntryPoint(),
+                per_compile_timer.TotalElapsedTime());
     }
 
     if (Isolate::Current()->debugger()->IsActive()) {
       Isolate::Current()->debugger()->NotifyCompilation(function);
     }
 
     if (FLAG_disassemble) {
       DisassembleCode(function, optimized);
     } else if (FLAG_disassemble_optimized && optimized) {
       // TODO(fschneider): Print unoptimized code along with the optimized code.
@@ skipping 125 matching lines @@
     result = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
     isolate->set_long_jump_base(base);
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 }  // namespace dart