X87: [Interpreter] Make dispatch table point to code entry instead of code objects.

X87: [Interpreter] Make dispatch table point to code entry instead of code objects.

  port 0c05e02f25912c0ce510dac3077be3f72728aa34 (r35480)

  original commit message:
  Modifies Ignition to store code entry addresses in the dispatch table
  rather than code objects. This allows the interpreter to avoid
  calculating the code entry address from the code object on every
  dispatch and provides a ~5-7% performance improvement on Octane with
  Ignition.

  This change adds ArchOpcode::kArchTailCallAddress to TurboFan to enable
  tail call dispatch using these code addresses. It also adds a Dispatch
  linkage creator (distinct from the stub linkage type used previously) to
  allow targetting a code address target (which will diverge further from
  the stub linkage type when we remove the context machine register in
  Ignition).

BUG=

Committed: https://crrev.com/eb89a753e16ec5ef4794b312d01e23080eae30e0
Cr-Commit-Position: refs/heads/master@{#35561}

[zhengxing.li, 2016-04-18 05:54:18]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, rmcilroy@chromium.org, weiliang.lin@intel.com

[zhengxing.li, 2016-04-18 05:54:18]

PTAL, thanks!

[Weiliang, 2016-04-18 06:34:49]

lgtm

[zhengxing.li, 2016-04-18 06:35:27]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2016-04-18 06:35:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1893243002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1893243002/1

[commit-bot: I haz the power, 2016-04-18 06:56:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-18 06:57:32]

Description was changed from

==========
X87: [Interpreter] Make dispatch table point to code entry instead of code
objects.

  port 0c05e02f25912c0ce510dac3077be3f72728aa34 (r35480)

  original commit message:
  Modifies Ignition to store code entry addresses in the dispatch table
  rather than code objects. This allows the interpreter to avoid
  calculating the code entry address from the code object on every
  dispatch and provides a ~5-7% performance improvement on Octane with
  Ignition.

  This change adds ArchOpcode::kArchTailCallAddress to TurboFan to enable
  tail call dispatch using these code addresses. It also adds a Dispatch
  linkage creator (distinct from the stub linkage type used previously) to
  allow targetting a code address target (which will diverge further from
  the stub linkage type when we remove the context machine register in
  Ignition).

BUG=
==========

to

==========
X87: [Interpreter] Make dispatch table point to code entry instead of code
objects.

  port 0c05e02f25912c0ce510dac3077be3f72728aa34 (r35480)

  original commit message:
  Modifies Ignition to store code entry addresses in the dispatch table
  rather than code objects. This allows the interpreter to avoid
  calculating the code entry address from the code object on every
  dispatch and provides a ~5-7% performance improvement on Octane with
  Ignition.

  This change adds ArchOpcode::kArchTailCallAddress to TurboFan to enable
  tail call dispatch using these code addresses. It also adds a Dispatch
  linkage creator (distinct from the stub linkage type used previously) to
  allow targetting a code address target (which will diverge further from
  the stub linkage type when we remove the context machine register in
  Ignition).

BUG=

Committed: https://crrev.com/eb89a753e16ec5ef4794b312d01e23080eae30e0
Cr-Commit-Position: refs/heads/master@{#35561}
==========

[commit-bot: I haz the power, 2016-04-18 06:57:33]

Patchset 1 (id:??) landed as
https://crrev.com/eb89a753e16ec5ef4794b312d01e23080eae30e0
Cr-Commit-Position: refs/heads/master@{#35561}