Import Cobalt 20.master.0.234144
Includes the following patches:
https://cobalt-review.googlesource.com/c/cobalt/+/5590
by n1214.hwang@samsung.com
https://cobalt-review.googlesource.com/c/cobalt/+/5530
by errong.leng@samsung.com
https://cobalt-review.googlesource.com/c/cobalt/+/5570
by devin.cai@mediatek.com
diff --git a/src/v8/test/js-perf-test/ArrayLiteralInitialSpreadLargeDoublePacked/run.js b/src/v8/test/js-perf-test/ArrayLiteralInitialSpreadLargeDoublePacked/run.js
new file mode 100644
index 0000000..9b44984
--- /dev/null
+++ b/src/v8/test/js-perf-test/ArrayLiteralInitialSpreadLargeDoublePacked/run.js
@@ -0,0 +1,155 @@
+// 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.
+
+// Comparing different copy schemes against spread initial literals.
+// Benchmarks for large packed double arrays.
+
+var largeArray = Array.from(Array(1e5).keys());
+// TODO(dhai): we should be able to use Array.prototype.map here, but that
+// implementation is currently creating a HOLEY array.
+for (var i = 0; i < 1e5; i++) {
+ largeArray[i] += 6.66;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: Spread
+// ----------------------------------------------------------------------------
+
+function SpreadLarge() {
+ var newArr = [...largeArray];
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: ForLength
+// ----------------------------------------------------------------------------
+
+function ForLengthLarge() {
+ var newArr = new Array(largeArray.length);
+ for (let i = 0; i < largeArray.length; i++) {
+ newArr[i] = largeArray[i];
+ }
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: ForLengthEmpty
+// ----------------------------------------------------------------------------
+
+function ForLengthEmptyLarge() {
+ var newArr = [];
+ for (let i = 0; i < largeArray.length; i++) {
+ newArr[i] = largeArray[i];
+ }
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: Slice
+// ----------------------------------------------------------------------------
+
+function SliceLarge() {
+ var newArr = largeArray.slice();
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: Slice0
+// ----------------------------------------------------------------------------
+
+function Slice0Large() {
+ var newArr = largeArray.slice(0);
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: ConcatReceive
+// ----------------------------------------------------------------------------
+
+function ConcatReceiveLarge() {
+ var newArr = largeArray.concat();
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: ConcatArg
+// ----------------------------------------------------------------------------
+
+function ConcatArgLarge() {
+ var newArr = [].concat(largeArray);
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: ForOfPush
+// ----------------------------------------------------------------------------
+
+function ForOfPushLarge() {
+ var newArr = [];
+ for (let x of largeArray) {
+ newArr.push(x)
+ }
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Benchmark: MapId
+// ----------------------------------------------------------------------------
+
+function MapIdLarge() {
+ var newArr = largeArray.map(x => x);
+ // basic sanity check
+ if (newArr.length != largeArray.length) throw 666;
+ return newArr;
+}
+
+// ----------------------------------------------------------------------------
+// Setup and Run
+// ----------------------------------------------------------------------------
+
+load('../base.js');
+
+var success = true;
+
+function PrintResult(name, result) {
+ print(name + '-ArrayLiteralInitialSpreadLargeDoublePacked(Score): ' + result);
+}
+
+function PrintError(name, error) {
+ PrintResult('Error: ' + name, error);
+ success = false;
+}
+
+// Run the benchmark (5 x 100) iterations instead of 1 second.
+function CreateBenchmark(name, f) {
+ new BenchmarkSuite(name, [1000], [ new Benchmark(name, false, false, 5, f) ]);
+}
+
+CreateBenchmark('Spread', SpreadLarge);
+CreateBenchmark('ForLength', ForLengthLarge);
+CreateBenchmark('ForLengthEmpty', ForLengthEmptyLarge);
+CreateBenchmark('Slice', SliceLarge);
+CreateBenchmark('Slice0', Slice0Large);
+CreateBenchmark('ConcatReceive', ConcatReceiveLarge);
+CreateBenchmark('ConcatArg', ConcatArgLarge);
+
+BenchmarkSuite.config.doWarmup = true;
+BenchmarkSuite.config.doDeterministic = true;
+BenchmarkSuite.RunSuites({NotifyResult: PrintResult, NotifyError: PrintError});
