Propagate switch statement value for 'eval'

Propagate switch statement value for 'eval'

This patch changes the switch scope desugaring to create blocks which
propagate their 'return value' for eval.

BUG=v8:4399
R=adamk
LOG=Y

Committed: https://crrev.com/6773e2961de8f9e588cbf0e939ab3f325dd6fef9
Cr-Commit-Position: refs/heads/master@{#30454}

[Dan Ehrenberg, 2015-08-28 21:01:36]

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

[commit-bot: I haz the power, 2015-08-28 21:01:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309303006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309303006/1

[commit-bot: I haz the power, 2015-08-28 21:28:50]

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

[commit-bot: I haz the power, 2015-08-28 21:28:50]

Dry run: Try jobs failed on following builders:
  v8_linux64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel/builds/9188)

[Dan Ehrenberg, 2015-08-28 21:59:15]

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

[commit-bot: I haz the power, 2015-08-28 21:59:27]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309303006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309303006/20001

[adamk, 2015-08-28 22:03:20]

lgtm, though as discussed offline please add a test case to the regression test
for the undefined case.

https://codereview.chromium.org/1309303006/diff/20001/src/parser.cc
File src/parser.cc (right):

https://codereview.chromium.org/1309303006/diff/20001/src/parser.cc#newcode2993
src/parser.cc:2993: factory()->NewBlock(NULL, 2, false, RelocInfo::kNoPosition);
We really ought to change this param to an enum so the callsites are clearer,
but that's a cleanup for a future CL.

[commit-bot: I haz the power, 2015-08-28 22:07:53]

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

[commit-bot: I haz the power, 2015-08-28 22:07:54]

Dry run: Try jobs failed on following builders:
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/9228)

[Dan Ehrenberg, 2015-08-28 22:08:26]

The CQ bit was checked by littledan@chromium.org

[Dan Ehrenberg, 2015-08-28 22:08:27]

The patchset sent to the CQ was uploaded after l-g-t-m from adamk@chromium.org
Link to the patchset: https://codereview.chromium.org/1309303006/#ps30003
(title: "additional tests")

[commit-bot: I haz the power, 2015-08-28 22:08:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309303006/30003
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309303006/30003

[commit-bot: I haz the power, 2015-08-28 22:17:42]

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

[commit-bot: I haz the power, 2015-08-28 22:17:43]

Try jobs failed on following builders:
  v8_linux_arm64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm64_rel/builds/9115)
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/9229)

[Dan Ehrenberg, 2015-08-28 22:20:01]

The CQ bit was checked by littledan@chromium.org

[Dan Ehrenberg, 2015-08-28 22:20:02]

The patchset sent to the CQ was uploaded after l-g-t-m from adamk@chromium.org
Link to the patchset: https://codereview.chromium.org/1309303006/#ps50001
(title: "Fix AST tests")

[commit-bot: I haz the power, 2015-08-28 22:20:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309303006/50001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309303006/50001

[commit-bot: I haz the power, 2015-08-28 22:43:07]

Committed patchset #4 (id:50001)

[commit-bot: I haz the power, 2015-08-28 22:43:14]

Patchset 4 (id:??) landed as
https://crrev.com/6773e2961de8f9e588cbf0e939ab3f325dd6fef9
Cr-Commit-Position: refs/heads/master@{#30454}