[Interpreter] Log source positions for bytecode arrays.

[Interpreter] Log source positions for bytecode arrays.

Add support to log source position offsets to the profiler. As part of
this change PositionsRecorder is split into two, with the subset needed
by log.cc moved into log.h and the remainder kept in assembler.h as
AssemblerPositionsRecorder. The interpreter's source position table
builder is updated to log positions when the profiler is active.

BUG=v8:4766
LOG=N

Committed: https://crrev.com/d58201589bbfa5b320be842e4cb9f14d0e874eb2
Cr-Commit-Position: refs/heads/master@{#34416}

[rmcilroy, 2016-02-25 15:36:05]

The CQ bit was checked by rmcilroy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-25 15:36:09]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/20001

[rmcilroy, 2016-02-25 15:36:28]

rmcilroy@chromium.org changed reviewers:
+ yangguo@chromium.org

[rmcilroy, 2016-02-25 15:36:29]

Yang, PTAL, thanks.

[commit-bot: I haz the power, 2016-02-25 15:51:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-25 15:51:22]

Dry run: Try jobs failed on following builders:
  v8_win64_rel_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win64_rel_ng/builds/3475)
  v8_win_compile_dbg on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_compile_dbg/builds/1...)

[rmcilroy, 2016-02-26 11:51:20]

The CQ bit was checked by rmcilroy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-26 11:51:26]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/40001

[commit-bot: I haz the power, 2016-02-26 11:54:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-26 11:54:13]

Dry run: Try jobs failed on following builders:
  v8_linux64_asan_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel/builds/...)
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)
  v8_linux64_rel_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel_ng/builds/1994)
  v8_linux_arm64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm64_rel/builds/1...)
  v8_win_nosnap_shared_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_nosnap_shared_compil...)

[rmcilroy, 2016-02-26 12:14:53]

The CQ bit was checked by rmcilroy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-26 12:15:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/60001

[commit-bot: I haz the power, 2016-02-26 12:27:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-26 12:27:13]

Dry run: Try jobs failed on following builders:
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)

[rmcilroy, 2016-02-26 15:59:24]

The CQ bit was checked by rmcilroy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-26 15:59:37]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/80001

[commit-bot: I haz the power, 2016-02-26 16:19:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-26 16:19:03]

Dry run: Try jobs failed on following builders:
  v8_linux_nodcheck_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_nodcheck_rel/build...)

[Yang, 2016-03-01 11:33:04]

lgtm

[rmcilroy, 2016-03-01 19:29:45]

The CQ bit was checked by rmcilroy@chromium.org

[commit-bot: I haz the power, 2016-03-01 19:29:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/80001

[commit-bot: I haz the power, 2016-03-01 19:31:16]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-03-01 19:31:17]

Try jobs failed on following builders:
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)
  v8_linux_dbg_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg_ng/builds/2179)
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/16313)
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/11730)

[rmcilroy, 2016-03-02 00:29:55]

The CQ bit was checked by rmcilroy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-03-02 00:29:59]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/100001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/100001

[commit-bot: I haz the power, 2016-03-02 00:48:23]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-03-02 00:48:24]

Dry run: Try jobs failed on following builders:
  v8_linux64_rel_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel_ng/builds/2206)
  v8_linux64_rel_ng_triggered on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel_ng_triggered...)

[rmcilroy, 2016-03-02 01:42:24]

The CQ bit was checked by rmcilroy@chromium.org

[rmcilroy, 2016-03-02 01:42:25]

The patchset sent to the CQ was uploaded after l-g-t-m from yangguo@chromium.org
Link to the patchset: https://codereview.chromium.org/1737043002/#ps120001
(title: "TickLinesBaseline now works with more source positions")

[commit-bot: I haz the power, 2016-03-02 01:42:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1737043002/120001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1737043002/120001

[commit-bot: I haz the power, 2016-03-02 02:10:17]

Committed patchset #7 (id:120001)

[commit-bot: I haz the power, 2016-03-02 02:11:00]

Description was changed from

==========
[Interpreter] Log source positions for bytecode arrays.

Add support to log source position offsets to the profiler. As part of
this change PositionsRecorder is split into two, with the subset needed
by log.cc moved into log.h and the remainder kept in assembler.h as
AssemblerPositionsRecorder. The interpreter's source position table
builder is updated to log positions when the profiler is active.

BUG=v8:4766
LOG=N
==========

to

==========
[Interpreter] Log source positions for bytecode arrays.

Add support to log source position offsets to the profiler. As part of
this change PositionsRecorder is split into two, with the subset needed
by log.cc moved into log.h and the remainder kept in assembler.h as
AssemblerPositionsRecorder. The interpreter's source position table
builder is updated to log positions when the profiler is active.

BUG=v8:4766
LOG=N

Committed: https://crrev.com/d58201589bbfa5b320be842e4cb9f14d0e874eb2
Cr-Commit-Position: refs/heads/master@{#34416}
==========

[commit-bot: I haz the power, 2016-03-02 02:11:02]

Patchset 7 (id:??) landed as
https://crrev.com/d58201589bbfa5b320be842e4cb9f14d0e874eb2
Cr-Commit-Position: refs/heads/master@{#34416}