X87: [fullcodegen] Implement operand stack depth tracking.

X87: [fullcodegen] Implement operand stack depth tracking.

  port 38915ed71c179276a1368ea8442bf88f66f50a4c (r34211)

  original commit message:
  This implements a mechanism to track the exact depth of the operand
  stack in full-codegen for every sub-expression visitation. So far we
  only tracked the depth at statement level, but not at expression level.
  With the introduction of do-expressions it will be possible to construct
  local control flow (i.e. break, continue and friends) that target labels
  at an arbitrary operand stack depth, making this tracking a prerequisite
  for full do-expression support.

BUG=

Committed: https://crrev.com/9458a6e4d88094b2ca8a31f3b2ec1b67916bd282
Cr-Commit-Position: refs/heads/master@{#34231}

[zhengxing.li, 2016-02-24 02:12:59]

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

[zhengxing.li, 2016-02-24 02:13:00]

PTAL, thanks!

[Weiliang, 2016-02-24 03:05:34]

lgtm

[zhengxing.li, 2016-02-24 03:11:52]

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

[commit-bot: I haz the power, 2016-02-24 03:12:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1728953003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1728953003/1

[commit-bot: I haz the power, 2016-02-24 03:33:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-24 03:34:54]

Description was changed from

==========
X87: [fullcodegen] Implement operand stack depth tracking.

  port 38915ed71c179276a1368ea8442bf88f66f50a4c (r34211)

  original commit message:
  This implements a mechanism to track the exact depth of the operand
  stack in full-codegen for every sub-expression visitation. So far we
  only tracked the depth at statement level, but not at expression level.
  With the introduction of do-expressions it will be possible to construct
  local control flow (i.e. break, continue and friends) that target labels
  at an arbitrary operand stack depth, making this tracking a prerequisite
  for full do-expression support.

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

to

==========
X87: [fullcodegen] Implement operand stack depth tracking.

  port 38915ed71c179276a1368ea8442bf88f66f50a4c (r34211)

  original commit message:
  This implements a mechanism to track the exact depth of the operand
  stack in full-codegen for every sub-expression visitation. So far we
  only tracked the depth at statement level, but not at expression level.
  With the introduction of do-expressions it will be possible to construct
  local control flow (i.e. break, continue and friends) that target labels
  at an arbitrary operand stack depth, making this tracking a prerequisite
  for full do-expression support.

BUG=

Committed: https://crrev.com/9458a6e4d88094b2ca8a31f3b2ec1b67916bd282
Cr-Commit-Position: refs/heads/master@{#34231}
==========

[commit-bot: I haz the power, 2016-02-24 03:34:55]

Patchset 1 (id:??) landed as
https://crrev.com/9458a6e4d88094b2ca8a31f3b2ec1b67916bd282
Cr-Commit-Position: refs/heads/master@{#34231}