[interpreter] Add ability to preserve bytecode.

[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265
Committed: https://crrev.com/9e60db1f38d7f36f7697bd451307f68846dcf9f0
Cr-Commit-Position: refs/heads/master@{#38540}

[Michael Starzinger, 2016-08-09 09:22:53]

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

[commit-bot: I haz the power, 2016-08-09 09:22:58]

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, 2016-08-09 09:37:25]

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

[commit-bot: I haz the power, 2016-08-09 09:37:26]

Dry run: Try jobs failed on following builders:
  v8_linux64_gyp_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_gyp_rel_ng/build...)
  v8_linux64_gyp_rel_ng_triggered on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_gyp_rel_ng_trigg...)

[Michael Starzinger, 2016-08-10 11:32:30]

Description was changed from

==========
[interpreter] Preserve bytecode even during tier-up.

R=
==========

to

==========
[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265
==========

[Michael Starzinger, 2016-08-10 11:32:30]

mstarzinger@chromium.org changed reviewers:
+ yangguo@chromium.org

[Michael Starzinger, 2016-08-10 11:35:19]

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

[commit-bot: I haz the power, 2016-08-10 11:35:27]

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, 2016-08-10 12:06:31]

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

[commit-bot: I haz the power, 2016-08-10 12:06:32]

Dry run: This issue passed the CQ dry run.

[Yang, 2016-08-10 13:50:52]

lgtm

[Michael Starzinger, 2016-08-10 13:51:44]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-08-10 13:51:54]

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, 2016-08-10 13:53:49]

Description was changed from

==========
[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265
==========

to

==========
[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265
==========

[commit-bot: I haz the power, 2016-08-10 13:53:50]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-08-10 13:54:17]

Description was changed from

==========
[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265
==========

to

==========
[interpreter] Add ability to preserve bytecode.

This adds the --ignition-preserve-bytecode flag which will preserve any
existing bytecode, even if a tier-up to baseline code is performed. This
is preparatory work in order to allow mixed stacks where bytecode and
baseline code can be active at the same time.

It also adds a {HasBaselineCode} predicate symmetric to the existing
{HasBytecodeArray} predicate. Both predicates are independent and any
combination of answers is valid.

Further adaptation of the rest of the runtime will be done step-wise in
follow-up changes.

R=yangguo@chromium.org
BUG=v8:5265

Committed: https://crrev.com/9e60db1f38d7f36f7697bd451307f68846dcf9f0
Cr-Commit-Position: refs/heads/master@{#38540}
==========

[commit-bot: I haz the power, 2016-08-10 13:54:18]

Patchset 4 (id:??) landed as
https://crrev.com/9e60db1f38d7f36f7697bd451307f68846dcf9f0
Cr-Commit-Position: refs/heads/master@{#38540}