X87: [heap] New heuristics for incremental marking step size.

X87: [heap] New heuristics for incremental marking step size.

  port 1beb89f24cb01663843a7519921e7caf0910c760 (r39827)

  original commit message:
  This patch simplifies code for speeding up marking and
  removes write barrier counter.

  The step size is now computed based in two parts:
  - bytes to mark in order to keep up with allocation,
  - bytes to mark in order to make progress.

BUG=

Committed: https://crrev.com/749570ed718801445a743be61b62043da55e13a1
Cr-Commit-Position: refs/heads/master@{#40116}

[zhengxing.li, 2016-10-10 06:24:20]

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

[zhengxing.li, 2016-10-10 06:24:20]

PTAL, thanks!

[ulan, 2016-10-10 07:48:24]

lgtm, thank you!

[Weiliang, 2016-10-10 07:49:03]

On 2016/10/10 07:48:24, ulan wrote:
> lgtm, thank you!

lgtm

[zhengxing.li, 2016-10-10 09:04:40]

On 2016/10/10 07:49:03, Weiliang wrote:
> On 2016/10/10 07:48:24, ulan wrote:
> > lgtm, thank you!
> 
> lgtm

Thanks, Titzer!

I tested for IA32, if I just use xmm1 as the FP return register, those tests
failed too, It's correct?
Thanks!

[zhengxing.li, 2016-10-10 09:31:20]

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

[commit-bot: I haz the power, 2016-10-10 09:31:29]

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, 2016-10-10 09:54:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-10 09:54:43]

Description was changed from

==========
X87: [heap] New heuristics for incremental marking step size.

  port 1beb89f24cb01663843a7519921e7caf0910c760 (r39827)

  original commit message:
  This patch simplifies code for speeding up marking and
  removes write barrier counter.

  The step size is now computed based in two parts:
  - bytes to mark in order to keep up with allocation,
  - bytes to mark in order to make progress.

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

to

==========
X87: [heap] New heuristics for incremental marking step size.

  port 1beb89f24cb01663843a7519921e7caf0910c760 (r39827)

  original commit message:
  This patch simplifies code for speeding up marking and
  removes write barrier counter.

  The step size is now computed based in two parts:
  - bytes to mark in order to keep up with allocation,
  - bytes to mark in order to make progress.

BUG=

Committed: https://crrev.com/749570ed718801445a743be61b62043da55e13a1
Cr-Commit-Position: refs/heads/master@{#40116}
==========

[commit-bot: I haz the power, 2016-10-10 09:54:44]

Patchset 1 (id:??) landed as
https://crrev.com/749570ed718801445a743be61b62043da55e13a1
Cr-Commit-Position: refs/heads/master@{#40116}