X87: [heap] Move to page lookups for SemiSpace, NewSpace, and Heap containment methods.

X87: [heap] Move to page lookups for SemiSpace, NewSpace, and Heap containment methods.

  port cfbd25617cfb8177bbb6377280e23ec356eb2373(r33857)

  original commit message:
  Preparing the young generation for (real) non-contiguous backing memory, this
  change removes object masks that are used to compute containment in semi and new
  space. The masks are replaced by lookups for object tags and page headers, where
  possible.

  Details:
  - Use the fast checks (page header lookups) for containment in regular code.
  - Use the slow version that masks out the page start adress and iterates all
    pages of a space for debugging/verification.
  - The slow version works for off-heap/unmapped memory.
  - Encapsulate all checks for the old->new barrier in Heap::RecordWrite().

BUG=

Committed: https://crrev.com/d72bd65499c2cd43590ac4db30374878f2c71a47
Cr-Commit-Position: refs/heads/master@{#33970}

[zhengxing.li, 2016-02-15 06:14:22]

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

[zhengxing.li, 2016-02-15 06:14:22]

PTAL, thanks!

[Weiliang, 2016-02-15 06:17:17]

lgtm

[zhengxing.li, 2016-02-15 06:18:40]

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

[commit-bot: I haz the power, 2016-02-15 06:18:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1698803002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1698803002/1

[commit-bot: I haz the power, 2016-02-15 06:37:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-15 06:37:59]

Description was changed from

==========
X87: [heap] Move to page lookups for SemiSpace, NewSpace, and Heap containment
methods.

  port cfbd25617cfb8177bbb6377280e23ec356eb2373(r33857)

  original commit message:
  Preparing the young generation for (real) non-contiguous backing memory, this
  change removes object masks that are used to compute containment in semi and
new
  space. The masks are replaced by lookups for object tags and page headers,
where
  possible.

  Details:
  - Use the fast checks (page header lookups) for containment in regular code.
  - Use the slow version that masks out the page start adress and iterates all
    pages of a space for debugging/verification.
  - The slow version works for off-heap/unmapped memory.
  - Encapsulate all checks for the old->new barrier in Heap::RecordWrite().

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

to

==========
X87: [heap] Move to page lookups for SemiSpace, NewSpace, and Heap containment
methods.

  port cfbd25617cfb8177bbb6377280e23ec356eb2373(r33857)

  original commit message:
  Preparing the young generation for (real) non-contiguous backing memory, this
  change removes object masks that are used to compute containment in semi and
new
  space. The masks are replaced by lookups for object tags and page headers,
where
  possible.

  Details:
  - Use the fast checks (page header lookups) for containment in regular code.
  - Use the slow version that masks out the page start adress and iterates all
    pages of a space for debugging/verification.
  - The slow version works for off-heap/unmapped memory.
  - Encapsulate all checks for the old->new barrier in Heap::RecordWrite().

BUG=

Committed: https://crrev.com/d72bd65499c2cd43590ac4db30374878f2c71a47
Cr-Commit-Position: refs/heads/master@{#33970}
==========

[commit-bot: I haz the power, 2016-02-15 06:38:00]

Patchset 1 (id:??) landed as
https://crrev.com/d72bd65499c2cd43590ac4db30374878f2c71a47
Cr-Commit-Position: refs/heads/master@{#33970}