S390: Remove all non-function-name uses of CONST_LEGACY

S390: Remove all non-function-name uses of CONST_LEGACY

Port 59546149c600a2262339e82b6d24e407a71e7a98

Original commit message:

    Now that all 'const' declarations are of the ES2015 variety, the only
    use of CONST_LEGACY is for function name bindings in sloppy mode
    named function expressions.

    This patch aims to delete all code meant to handle other cases, which
    mostly had to do with hole initialization/hole checks. Since function
    name bindings are initialized at entry to a function, it's impossible
    to ever observe one in an uninitialized state.

    To simplify the patch further, it removes the `IMPORT` VariableMode,
    as it's not likely to be needed (IMPORT is identical to CONST for
    the purpose of VariableMode).

R=adamk@chromium.org, joransiu@ca.ibm.com, bjaideep@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Committed: https://crrev.com/70d2c1cfd03cce8f113d6a47e34abedd8da46e53
Cr-Commit-Position: refs/heads/master@{#35673}

[john.yan, 2016-04-20 17:39:17]

PTAL

[JoranSiu, 2016-04-20 17:40:05]

On 2016/04/20 17:39:17, john.yan wrote:
> PTAL

lgtm

[john.yan, 2016-04-20 17:43:22]

The CQ bit was checked by jyan@ca.ibm.com

[commit-bot: I haz the power, 2016-04-20 17:43:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1901423004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1901423004/1

[commit-bot: I haz the power, 2016-04-20 18:04:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:13:40]

Description was changed from

==========
S390: Remove all non-function-name uses of CONST_LEGACY

Port 59546149c600a2262339e82b6d24e407a71e7a98

Original commit message:

    Now that all 'const' declarations are of the ES2015 variety, the only
    use of CONST_LEGACY is for function name bindings in sloppy mode
    named function expressions.

    This patch aims to delete all code meant to handle other cases, which
    mostly had to do with hole initialization/hole checks. Since function
    name bindings are initialized at entry to a function, it's impossible
    to ever observe one in an uninitialized state.

    To simplify the patch further, it removes the `IMPORT` VariableMode,
    as it's not likely to be needed (IMPORT is identical to CONST for
    the purpose of VariableMode).

R=adamk@chromium.org, joransiu@ca.ibm.com, bjaideep@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N
==========

to

==========
S390: Remove all non-function-name uses of CONST_LEGACY

Port 59546149c600a2262339e82b6d24e407a71e7a98

Original commit message:

    Now that all 'const' declarations are of the ES2015 variety, the only
    use of CONST_LEGACY is for function name bindings in sloppy mode
    named function expressions.

    This patch aims to delete all code meant to handle other cases, which
    mostly had to do with hole initialization/hole checks. Since function
    name bindings are initialized at entry to a function, it's impossible
    to ever observe one in an uninitialized state.

    To simplify the patch further, it removes the `IMPORT` VariableMode,
    as it's not likely to be needed (IMPORT is identical to CONST for
    the purpose of VariableMode).

R=adamk@chromium.org, joransiu@ca.ibm.com, bjaideep@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Committed: https://crrev.com/70d2c1cfd03cce8f113d6a47e34abedd8da46e53
Cr-Commit-Position: refs/heads/master@{#35673}
==========

[commit-bot: I haz the power, 2016-04-22 19:13:41]

Patchset 1 (id:??) landed as
https://crrev.com/70d2c1cfd03cce8f113d6a47e34abedd8da46e53
Cr-Commit-Position: refs/heads/master@{#35673}