X87: [Atomics] code stubs for atomic operations.

X87: [Atomics] code stubs for atomic operations.

  port 5e9ddf6ce4b698cb3112bd349ca5206cfada1437 (r35453)

  original commit message:
  Reland of (https://codereview.chromium.org/1617503003)

  * New atomic code stubs for x64, ia32, arm, arm64
  * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
    to macro-assembler-ia32 (API based on x64 macro assembler)
  * Remove runtime implementation of Atomics.load, the code stub should always be
    called instead
  * Add new test to mjsunit atomics test; check that Smi values of different
    sizes are supported when possible, else fall back to HeapNumbers

  These changes were needed to add another codestub:
  * Bump kStubMajorKeyBits from 7 to 8
  * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

BUG=

Committed: https://crrev.com/1ff65e996306c71f7029ad5a3d38250e775e5a2b
Cr-Commit-Position: refs/heads/master@{#35560}

[zhengxing.li, 2016-04-18 02:41:37]

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

[zhengxing.li, 2016-04-18 02:41:37]

PTAL, thanks!

[Weiliang, 2016-04-18 03:08:06]

lgtm

[zhengxing.li, 2016-04-18 05:48:42]

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

[commit-bot: I haz the power, 2016-04-18 05:48:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1894923002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1894923002/1

[commit-bot: I haz the power, 2016-04-18 06:06:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-18 06:08:17]

Description was changed from

==========
X87: [Atomics] code stubs for atomic operations.

  port 5e9ddf6ce4b698cb3112bd349ca5206cfada1437 (r35453)

  original commit message:
  Reland of (https://codereview.chromium.org/1617503003)

  * New atomic code stubs for x64, ia32, arm, arm64
  * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
    to macro-assembler-ia32 (API based on x64 macro assembler)
  * Remove runtime implementation of Atomics.load, the code stub should always
be
    called instead
  * Add new test to mjsunit atomics test; check that Smi values of different
    sizes are supported when possible, else fall back to HeapNumbers

  These changes were needed to add another codestub:
  * Bump kStubMajorKeyBits from 7 to 8
  * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

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

to

==========
X87: [Atomics] code stubs for atomic operations.

  port 5e9ddf6ce4b698cb3112bd349ca5206cfada1437 (r35453)

  original commit message:
  Reland of (https://codereview.chromium.org/1617503003)

  * New atomic code stubs for x64, ia32, arm, arm64
  * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
    to macro-assembler-ia32 (API based on x64 macro assembler)
  * Remove runtime implementation of Atomics.load, the code stub should always
be
    called instead
  * Add new test to mjsunit atomics test; check that Smi values of different
    sizes are supported when possible, else fall back to HeapNumbers

  These changes were needed to add another codestub:
  * Bump kStubMajorKeyBits from 7 to 8
  * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

BUG=

Committed: https://crrev.com/1ff65e996306c71f7029ad5a3d38250e775e5a2b
Cr-Commit-Position: refs/heads/master@{#35560}
==========

[commit-bot: I haz the power, 2016-04-18 06:08:17]

Patchset 1 (id:??) landed as
https://crrev.com/1ff65e996306c71f7029ad5a3d38250e775e5a2b
Cr-Commit-Position: refs/heads/master@{#35560}