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[DDC-kernel] Train snapshot on an actual compilation run

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The previous situtation of training it by running "--help" doesn't
give much.
This trains it on a small input file (i.e. theoretically not as good as
training it on big input file, but better than the --help situation).
On a local hack where I "forced" the compilation of dartdevc.dart itself
(i.e. a big input ifle) as the training, it shaved off a few extra
seconds, but nothing major.

This CL, running language_2 locally this takes it from
[04:08 | 100% | + 5171 | -    0]
to
[03:12 | 100% | + 5171 | -    0]


Bug:
Change-Id: I9397e11027be3dee3c080be7cdff22ea2f64b654
Reviewed-on: https://dart-review.googlesource.com/28622
Reviewed-by: Karl Klose <karlklose@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
This commit is contained in:
Jens Johansen 2017-12-13 08:13:26 +00:00 committed by commit-bot@chromium.org
parent 7458045577
commit 5072cba017
1 changed files with 3 additions and 1 deletions
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4
utils/dartdevc/BUILD.gn
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@ -47,7 +47,9 @@ application_snapshot("dartdevk") {
training_args = [
"--dart-sdk-summary",
rebase_path(sdk_dill),
"--help",
"-o",
"dartdevk.js",
rebase_path("../../pkg/dev_compiler/test/codegen/sunflower/sunflower.dart"),
]
deps = [