[turbofan] Remove bogus constant materialization from frame.

[turbofan] Remove bogus constant materialization from frame.

This removes an optimization from the code generator that tries to
materialize certain constants (i.e. context and closure) from the
stackframe when possible. This does not work with Harmony tail calls
which are split into several instructions. There have already been
numerous bugs in this optimization, it is too fragile in its current
form.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-648539
BUG=chromium:648539
Committed: https://crrev.com/81f43429943aabcc9c970562c25f2725c6fc778f
Cr-Commit-Position: refs/heads/master@{#39583}

[Michael Starzinger, 2016-09-21 08:54:11]

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

[commit-bot: I haz the power, 2016-09-21 08:54:13]

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

[Benedikt Meurer, 2016-09-21 08:54:48]

lgtm

[commit-bot: I haz the power, 2016-09-21 09:22:24]

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

[commit-bot: I haz the power, 2016-09-21 09:22:25]

Dry run: This issue passed the CQ dry run.

[Michael Starzinger, 2016-09-21 09:23:09]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-09-21 09:23:16]

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, 2016-09-21 09:30:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-21 09:31:37]

Description was changed from

==========
[turbofan] Remove bogus constant materialization from frame.

This removes an optimization from the code generator that tries to
materialize certain constants (i.e. context and closure) from the
stackframe when possible. This does not work with Harmony tail calls
which are split into several instructions. There have already been
numerous bugs in this optimization, it is too fragile in its current
form.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-648539
BUG=chromium:648539
==========

to

==========
[turbofan] Remove bogus constant materialization from frame.

This removes an optimization from the code generator that tries to
materialize certain constants (i.e. context and closure) from the
stackframe when possible. This does not work with Harmony tail calls
which are split into several instructions. There have already been
numerous bugs in this optimization, it is too fragile in its current
form.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-648539
BUG=chromium:648539

Committed: https://crrev.com/81f43429943aabcc9c970562c25f2725c6fc778f
Cr-Commit-Position: refs/heads/master@{#39583}
==========

[commit-bot: I haz the power, 2016-09-21 09:31:38]

Patchset 1 (id:??) landed as
https://crrev.com/81f43429943aabcc9c970562c25f2725c6fc778f
Cr-Commit-Position: refs/heads/master@{#39583}