Train ddc snapshot on itself

Train ddc snapshot on itself

This speeds up dartdevc on hello world from about 600ms to about 150ms.

OTOH, it also increases the snapshot size from ~4.6M to ~31M (the
latter is just under the size of the dart2js snapshot).

I tried this before.  This may break again on windows - if so, i'll revert.

R=jakemac@google.com

Committed: https://github.com/dart-lang/sdk/commit/1bd92d4f04f44aa00ce63345cd161d5fa773fab0

[vsm, 2017-03-20 17:50:37]

Description was changed from

==========
Train ddc snapshot on itself

This speeds up dartdevc on hello world from about 600ms to about 150ms.

OTOH, it also increases the snapshot size from ~4.6M to ~31M (the
latter is just under the size of the dart2js snapshot).
==========

to

==========
Train ddc snapshot on itself

This speeds up dartdevc on hello world from about 600ms to about 150ms.

OTOH, it also increases the snapshot size from ~4.6M to ~31M (the
latter is just under the size of the dart2js snapshot).

I tried this before.  This may break again on windows - if so, i'll revert.
==========

[vsm, 2017-03-20 17:50:37]

vsm@google.com changed reviewers:
+ jakemac@google.com

[jakemac, 2017-03-20 18:15:17]

lgtm

[vsm, 2017-03-21 01:51:40]

Description was changed from

==========
Train ddc snapshot on itself

This speeds up dartdevc on hello world from about 600ms to about 150ms.

OTOH, it also increases the snapshot size from ~4.6M to ~31M (the
latter is just under the size of the dart2js snapshot).

I tried this before.  This may break again on windows - if so, i'll revert.
==========

to

==========
Train ddc snapshot on itself

This speeds up dartdevc on hello world from about 600ms to about 150ms.

OTOH, it also increases the snapshot size from ~4.6M to ~31M (the
latter is just under the size of the dart2js snapshot).

I tried this before.  This may break again on windows - if so, i'll revert.

R=jakemac@google.com

Committed:
https://github.com/dart-lang/sdk/commit/1bd92d4f04f44aa00ce63345cd161d5fa773fab0
==========

[vsm, 2017-03-21 01:51:41]

Committed patchset #1 (id:1) manually as
1bd92d4f04f44aa00ce63345cd161d5fa773fab0 (presubmit successful).