Timeline event for compiling irregexp bytecode.

runtime/vm/regexp_assembler_bytecode.cc

 // Copyright (c) 2015, 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/regexp_assembler_bytecode.h"
 
 #include "vm/regexp_assembler_bytecode_inl.h"
 #include "vm/exceptions.h"
 #include "vm/object_store.h"
 #include "vm/regexp_bytecodes.h"
 #include "vm/regexp_assembler.h"
 #include "vm/regexp.h"
 #include "vm/regexp_parser.h"
 #include "vm/regexp_interpreter.h"
+#include "vm/timeline.h"
 
 namespace dart {
 
 BytecodeRegExpMacroAssembler::BytecodeRegExpMacroAssembler(
     ZoneGrowableArray<uint8_t>* buffer,
     Zone* zone)
     : RegExpMacroAssembler(zone),
       buffer_(buffer),
       pc_(0),
       advance_current_end_(kInvalidPC) { }
@@ skipping 428 matching lines @@
 
 
 static intptr_t Prepare(const RegExp& regexp,
                         const String& subject,
                         Zone* zone) {
   bool is_one_byte = subject.IsOneByteString() ||
                      subject.IsExternalOneByteString();
 
   if (regexp.bytecode(is_one_byte) == TypedData::null()) {
     const String& pattern = String::Handle(zone, regexp.pattern());
+    NOT_IN_PRODUCT(TimelineDurationScope tds(Thread::Current(),
+                                             Timeline::GetCompilerStream(),
+                                             "CompileIrregexpBytecode");
+    if (tds.enabled()) {
+      tds.SetNumArguments(1);
+      tds.CopyArgument(0, "pattern", pattern.ToCString());
+    });  // !PRODUCT
 
     const bool multiline = regexp.is_multi_line();
     RegExpCompileData* compile_data = new(zone) RegExpCompileData();
     if (!RegExpParser::ParseRegExp(pattern, multiline, compile_data)) {
       // Parsing failures are handled in the RegExp factory constructor.
       UNREACHABLE();
     }
 
     regexp.set_num_bracket_expressions(compile_data->capture_count);
     if (compile_data->simple) {
@@ skipping 112 matching lines @@
   }
   if (result == IrregexpInterpreter::RE_EXCEPTION) {
     UNREACHABLE();
   }
   ASSERT(result == IrregexpInterpreter::RE_FAILURE);
   return Instance::null();
 }
 
 
 }  // namespace dart