First simple implementation of for-of in TurboFan.

First simple implementation of for-of in TurboFan.

R=rossberg@chromium.org
TEST=cctest/test-run-jsbranches/ForOfContinueStatement

Committed: https://crrev.com/2ebe24c9cb22452bc1f84744e21453b5afaf054a
Cr-Commit-Position: refs/heads/master@{#26060}

[adamk, 2015-01-13 19:02:35]

adamk@chromium.org changed reviewers:
+ adamk@chromium.org

[adamk, 2015-01-13 19:02:36]

https://codereview.chromium.org/850803002/diff/1/src/ast-numbering.cc
File src/ast-numbering.cc (right):

https://codereview.chromium.org/850803002/diff/1/src/ast-numbering.cc#newcode393
src/ast-numbering.cc:393: DisableCrankshaft(kForOfStatement);
Does this mean that any function that happens to use for-of will now get
TurboFan-compiled (when optimized) instead of of Crankshafted?

[Michael Starzinger, 2015-01-13 19:28:01]

https://codereview.chromium.org/850803002/diff/1/src/ast-numbering.cc
File src/ast-numbering.cc (right):

https://codereview.chromium.org/850803002/diff/1/src/ast-numbering.cc#newcode393
src/ast-numbering.cc:393: DisableCrankshaft(kForOfStatement);
On 2015/01/13 19:02:36, adamk wrote:
> Does this mean that any function that happens to use for-of will now get
> TurboFan-compiled (when optimized) instead of of Crankshafted?

Not yet, there are two things missing. First you would need to pass
--turbo-filter=* to enable that. Second there still needs to be some adaptation
to the compilation pipeline (i.e. the mess in the compiler.cc file that nobody
wants to touch with a stick) to make this work reliably.

[rossberg, 2015-01-14 13:48:37]

lgtm

[Michael Starzinger, 2015-01-14 14:56:55]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-01-14 14:57:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/850803002/1

[commit-bot: I haz the power, 2015-01-14 15:24:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-14 15:24:37]

Patchset 1 (id:??) landed as
https://crrev.com/2ebe24c9cb22452bc1f84744e21453b5afaf054a
Cr-Commit-Position: refs/heads/master@{#26060}