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add kernel generation to the front_end/tool/perf script

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BUG=
R=paulberry@google.com

Review URL: https://codereview.chromium.org/2439053003 .
This commit is contained in:
Sigmund Cherem 2016-10-21 09:10:19 -07:00
parent 5964bdfa0b
commit 2bcd189f2d
2 changed files with 59 additions and 11 deletions
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6
pkg/front_end/pubspec.yaml
View file

@ -11,3 +11,9 @@ dependencies:
source_span: '^1.2.3'
dev_dependencies:
package_config: '^1.0.0'
# TODO(sigmund): update to a version constraint once we roll the latest kernel
# to the repo.
kernel: {path: ../../third_party/pkg/kernel}
# TODO(sigmund): remove once kernel is moved into the sdk repo.
dependency_overrides:
analyzer: '^0.29.0'

64
pkg/front_end/tool/perf.dart
View file

@ -6,7 +6,7 @@
library front_end.tool.perf;
import 'dart:async';
import 'dart:io' show exit;
import 'dart:io' show exit, stderr;
import 'package:analyzer/dart/ast/ast.dart';
import 'package:analyzer/dart/ast/token.dart';
@ -22,6 +22,8 @@ import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
import 'package:analyzer/src/generated/parser.dart';
import 'package:analyzer/src/generated/source.dart';
import 'package:analyzer/src/generated/source_io.dart';
import 'package:kernel/analyzer/loader.dart';
import 'package:kernel/kernel.dart';
import 'package:package_config/discovery.dart';
/// Cumulative total number of chars scanned.
@ -46,19 +48,36 @@ main(List<String> args) async {
await setup(entryUri);
if (bench == 'scan') {
Set<Source> files = scanReachableFiles(entryUri);
// TODO(sigmund): consider replacing the warmup with instrumented snapshots.
for (int i = 0; i < 10; i++) scanFiles(files);
} else if (bench == 'parse') {
Set<Source> files = scanReachableFiles(entryUri);
// TODO(sigmund): consider replacing the warmup with instrumented snapshots.
for (int i = 0; i < 10; i++) parseFiles(files);
} else {
print('unsupported bench-id: $bench. Please specify "scan" or "parse"');
var handlers = {
'scan': () async {
Set<Source> files = scanReachableFiles(entryUri);
// TODO(sigmund): replace the warmup with instrumented snapshots.
for (int i = 0; i < 10; i++) scanFiles(files);
},
'parse': () async {
Set<Source> files = scanReachableFiles(entryUri);
// TODO(sigmund): replace the warmup with instrumented snapshots.
for (int i = 0; i < 10; i++) parseFiles(files);
},
'kernel_gen_e2e': () async {
// TODO(sigmund): remove. This is used to compute the input size, we
// should extract input size from frontend instead.
scanReachableFiles(entryUri);
// TODO(sigmund): replace this warmup. Note that for very large programs,
// the GC pressure on the VM seems to make this worse with time (maybe we
// are leaking memory?). That's why we run it twice and not 10 times.
for (int i = 0; i < 2; i++) await generateKernel(entryUri);
},
};
var handler = handlers[bench];
if (handler == null) {
// TODO(sigmund): implement the remaining benchmarks.
print('unsupported bench-id: $bench. Please specify one of the following: '
'${handler.keys.join(", ")}');
exit(1);
}
await handler();
totalTimer.stop();
report("total", totalTimer.elapsedMicroseconds);
@ -201,3 +220,26 @@ void report(String name, int time) {
sb.write(', ${scanTotalChars * 1000 ~/ time} chars/ms');
print('$sb');
}
// TODO(sigmund): replace this once kernel is produced by the frontend directly.
Future<Program> generateKernel(Uri entryUri) async {
var dartkTimer = new Stopwatch()..start();
var options = new DartOptions(strongMode: false, sdk: 'sdk');
var packages =
await createPackages(options.packagePath, discoveryPath: entryUri.path);
var repository = new Repository();
DartLoader loader = new DartLoader(repository, options, packages);
Program program = loader.loadProgram(entryUri.path);
List errors = loader.errors;
if (errors.isNotEmpty) {
const int errorLimit = 100;
stderr.writeln(errors.take(errorLimit).join('\n'));
if (errors.length > errorLimit) {
stderr.writeln('[error] ${errors.length - errorLimit} errors not shown');
}
}
dartkTimer.stop();
report("kernel_gen_e2e", dartkTimer.elapsedMicroseconds);
return program;
}