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Add a front end perf test that computes unlinked summaries.

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R=sigmund@google.com

Review URL: https://codereview.chromium.org/2544643002 .
This commit is contained in:
Paul Berry 2016-12-01 05:46:47 -08:00
parent c0172aba48
commit cb2fef0c45
1 changed files with 35 additions and 0 deletions
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35
pkg/front_end/tool/perf.dart
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@ -19,6 +19,8 @@ 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:analyzer/src/summary/format.dart';
import 'package:analyzer/src/summary/summarize_ast.dart';
import 'package:kernel/analyzer/loader.dart';
import 'package:kernel/kernel.dart';
import 'package:package_config/discovery.dart';
@ -69,6 +71,11 @@ main(List<String> args) async {
// are leaking memory?). That's why we run it twice and not 10 times.
for (int i = 0; i < 2; i++) await generateKernel(entryUri);
},
'unlinked_summarize': () async {
Set<Source> files = scanReachableFiles(entryUri);
// TODO(sigmund): replace the warmup with instrumented snapshots.
for (int i = 0; i < 10; i++) unlinkedSummarizeFiles(files);
}
};
var handler = handlers[bench];
@ -173,6 +180,29 @@ void parseFiles(Set<Source> files) {
report("parse", pTime);
}
/// Produces unlinked summaries for every file in [files] and reports the time
/// spent doing so.
void unlinkedSummarizeFiles(Set<Source> files) {
// The code below will record again how many chars are scanned and how long it
// takes to scan them, even though we already did so in [scanReachableFiles].
// Recording and reporting this twice is unnecessary, but we do so for now to
// validate that the results are consistent.
scanTimer = new Stopwatch();
var old = scanTotalChars;
scanTotalChars = 0;
var summarizeTimer = new Stopwatch()..start();
for (var source in files) {
unlinkedSummarize(source);
}
summarizeTimer.stop();
if (old != scanTotalChars) print('input size changed? ${old} chars');
// TODO(paulberry): subtract out scan/parse time?
var summarizeTime = summarizeTimer.elapsedMicroseconds;
report('unlinked summarize', summarizeTime);
}
/// Add to [files] all sources reachable from [start].
void collectSources(Source start, Set<Source> files) {
if (!files.add(start)) return;
@ -199,6 +229,11 @@ CompilationUnit parseFull(Source source) {
return parser.parseCompilationUnit(token);
}
UnlinkedUnitBuilder unlinkedSummarize(Source source) {
var unit = parseFull(source);
return serializeAstUnlinked(unit);
}
/// Scan [source] and return the first token produced by the scanner.
Token tokenize(Source source) {
scanTimer.start();