PPC: [stubs] Introduce ToNameStub to implement %_ToName.

PPC: [stubs] Introduce ToNameStub to implement %_ToName.

Port a0878333de4dd090f9d8987e1698a9eef9cc7219

Original commit message:
    We already had hand-written optimized code for %_ToName in fullcodegen,
    but the optimizing compilers always went to the runtime for %_ToName,
    which is pretty bad for many of our builtins. So this CL moves the
    existing native code to a ToNameStub (similar to the existing
    ToStringStub), and uses the ToNameStub consistently in all compilers to
    actually implement %_ToName.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/12ac11e98faf09890d6f5baa38e8d36aea788eb4
Cr-Commit-Position: refs/heads/master@{#33476}

[john.yan, 2016-01-22 18:30:30]

lgtm

[MTBrandyberry, 2016-01-22 18:31:04]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2016-01-22 18:31:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1620313004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1620313004/1

[commit-bot: I haz the power, 2016-01-22 18:55:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-22 18:56:20]

Description was changed from

==========
PPC: [stubs] Introduce ToNameStub to implement %_ToName.

Port a0878333de4dd090f9d8987e1698a9eef9cc7219

Original commit message:
    We already had hand-written optimized code for %_ToName in fullcodegen,
    but the optimizing compilers always went to the runtime for %_ToName,
    which is pretty bad for many of our builtins. So this CL moves the
    existing native code to a ToNameStub (similar to the existing
    ToStringStub), and uses the ToNameStub consistently in all compilers to
    actually implement %_ToName.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [stubs] Introduce ToNameStub to implement %_ToName.

Port a0878333de4dd090f9d8987e1698a9eef9cc7219

Original commit message:
    We already had hand-written optimized code for %_ToName in fullcodegen,
    but the optimizing compilers always went to the runtime for %_ToName,
    which is pretty bad for many of our builtins. So this CL moves the
    existing native code to a ToNameStub (similar to the existing
    ToStringStub), and uses the ToNameStub consistently in all compilers to
    actually implement %_ToName.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/12ac11e98faf09890d6f5baa38e8d36aea788eb4
Cr-Commit-Position: refs/heads/master@{#33476}
==========

[commit-bot: I haz the power, 2016-01-22 18:56:21]

Patchset 1 (id:??) landed as
https://crrev.com/12ac11e98faf09890d6f5baa38e8d36aea788eb4
Cr-Commit-Position: refs/heads/master@{#33476}