[js-perf-test] Add micro-benchmark with constant regexps

Bug: v8:7779
Change-Id: Iabe5b74900885d489309fdfe25674a29e8690965
Reviewed-on: https://chromium-review.googlesource.com/1068745
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53281}

test/js-perf-test/RegExp.json

@@ -55,7 +55,8 @@
         {"name": "SlowReplace"},
         {"name": "SlowSearch"},
         {"name": "SlowSplit"},
-        {"name": "SlowTest"}
+        {"name": "SlowTest"},
+        {"name": "InlineTest"}
       ]
     }
   ]

test/js-perf-test/RegExp/RegExpTests.json

@@ -54,7 +54,8 @@
         {"name": "SlowReplace"},
         {"name": "SlowSearch"},
         {"name": "SlowSplit"},
-        {"name": "SlowTest"}
+        {"name": "SlowTest"},
+        {"name": "InlineTest"}
       ]
     }
   ]

test/js-perf-test/RegExp/run.js

@@ -20,6 +20,7 @@ load('slow_replace.js');
 load('slow_search.js');
 load('slow_split.js');
 load('slow_test.js');
+load('test_inl.js')
 
 var success = true;
 

test/js-perf-test/RegExp/test_inl.js

+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function ConstTest() {
+  /[Cz]/.test("abCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgz");
+}
+
+const cre = /[Cz]/;
+function GlobalConstTest() {
+  cre.test("abCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgzabCdefgz");
+}
+
+var benchmarks = [ [ConstTest, () => {}],
+                   [GlobalConstTest, () => {}],
+                 ];
+createBenchmarkSuite("InlineTest");