[turbofan] Introduce JSCallForwardVarargs operator.

[turbofan] Introduce JSCallForwardVarargs operator.

We turn a JSCallFunction node for

  f.apply(receiver, arguments)

into a JSCallForwardVarargs node, when the arguments refers to the
arguments of the outermost optimized code object, i.e. not an inlined
arguments, and the apply method refers to Function.prototype.apply,
and there's no other user of arguments except in frame states.

We also replace the arguments node in the graph with a marker for
the Deoptimizer similar to Crankshaft to make sure we don't materialize
unused arguments just for the sake of deoptimization. We plan to replace
this with a saner EscapeAnalysis based solution soon.

R=jarin@chromium.org
BUG=v8:5267, v8:5726
Review-Url: https://codereview.chromium.org/2655233002
Cr-Commit-Position: refs/heads/master@{#42680}
Committed: https://chromium.googlesource.com/v8/v8/+/69747e2658f1de973ba75c60fe31b402bd6031a5

[Benedikt Meurer, 2017-01-26 08:23:42]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-26 08:23:52]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Benedikt Meurer, 2017-01-26 08:47:47]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-26 08:47:56]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-26 09:19:52]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-26 09:19:53]

Dry run: This issue passed the CQ dry run.

[Jarin, 2017-01-26 09:27:11]

lgtm

[Benedikt Meurer, 2017-01-26 09:27:41]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-01-26 09:27:52]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-26 09:29:57]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1485422861205640,
"parent_rev": "7376e12e00b89d7ba476addeb05058147f8dd91d", "commit_rev":
"69747e2658f1de973ba75c60fe31b402bd6031a5"}

[commit-bot: I haz the power, 2017-01-26 09:30:03]

Description was changed from

==========
[turbofan] Introduce JSCallForwardVarargs operator.

We turn a JSCallFunction node for

  f.apply(receiver, arguments)

into a JSCallForwardVarargs node, when the arguments refers to the
arguments of the outermost optimized code object, i.e. not an inlined
arguments, and the apply method refers to Function.prototype.apply,
and there's no other user of arguments except in frame states.

We also replace the arguments node in the graph with a marker for
the Deoptimizer similar to Crankshaft to make sure we don't materialize
unused arguments just for the sake of deoptimization. We plan to replace
this with a saner EscapeAnalysis based solution soon.

R=jarin@chromium.org
BUG=v8:5267,v8:5726
==========

to

==========
[turbofan] Introduce JSCallForwardVarargs operator.

We turn a JSCallFunction node for

  f.apply(receiver, arguments)

into a JSCallForwardVarargs node, when the arguments refers to the
arguments of the outermost optimized code object, i.e. not an inlined
arguments, and the apply method refers to Function.prototype.apply,
and there's no other user of arguments except in frame states.

We also replace the arguments node in the graph with a marker for
the Deoptimizer similar to Crankshaft to make sure we don't materialize
unused arguments just for the sake of deoptimization. We plan to replace
this with a saner EscapeAnalysis based solution soon.

R=jarin@chromium.org
BUG=v8:5267,v8:5726

Review-Url: https://codereview.chromium.org/2655233002
Cr-Commit-Position: refs/heads/master@{#42680}
Committed:
https://chromium.googlesource.com/v8/v8/+/69747e2658f1de973ba75c60fe31b402bd6...
==========

[commit-bot: I haz the power, 2017-01-26 09:30:04]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/69747e2658f1de973ba75c60fe31b402bd6...