Add perf json for simd.js benchmarks.

Using a script to generate the somewhat redundant json.

BUG=v8:4124
LOG=N
R=machenbach@chromium.org,bbudge@chromium.org
TEST=None

Review URL: https://codereview.chromium.org/1146073002

Cr-Commit-Position: refs/heads/master@{#28514}

test/simdjs/generate.py

+#!/usr/bin/python
+# Copyright 2015 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.
+
+# Script to re-generate SimdJs.json from a SimdJs.json.template.
+
+import json
+import os
+import re
+
+SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))
+
+SKIP_FILES = [
+    '../ecmascript_simd',
+    'base',
+    # TODO(bradnelson): Drop these when tests are fixed upstream.
+    'aobench',
+    'averageFloat32x4Load',
+    'matrix-multiplication-load',
+]
+
+run_js = open(
+    os.path.join(SCRIPT_DIR, 'data', 'src', 'benchmarks', 'run.js')).read()
+tests = re.findall("load \\(\\'([^']+)[.]js\\'\\)", run_js)
+tests = [t for t in tests if t not in SKIP_FILES]
+
+output = {
+  'name': 'SIMDJS',
+  'run_count': 5,
+  'units': 'ms',
+  'total': True,
+  'resources': [
+    'test/simdjs/data/src/benchmarks/base.js',
+    'test/simdjs/data/src/ecmascript_simd.js'
+  ] + ['test/simdjs/data/src/benchmarks/%s.js' % t for t in tests],
+  'flags': ['--harmony-object', 'test/simdjs/harness-adapt.js'],
+  'path': ['../../'],
+  'tests': [
+    {
+      'name': test,
+      'main': 'test/simdjs/harness-finish.js',
+      'flags': ['test/simdjs/data/src/benchmarks/%s.js' % test],
+      'results_regexp': '%s\\([ ]*([0-9.]+)(ms)?\\)',
+      'tests': [
+        {'name': 'SIMD'},
+        {'name': 'Non-SIMD'},
+        {'name': 'Speedup', 'units': 'score'},
+        {'name': 'Iterations', 'units': 'count'}
+      ]
+    }
+  for test in tests],
+}
+
+with open(os.path.join(SCRIPT_DIR, 'SimdJS.json'), 'w') as fh:
+  fh.write(json.dumps(output, separators=(',',': '), indent=2, sort_keys=True))