Drop computed handler count and index from AST.

Drop computed handler count and index from AST.

These values were computed by the parser and hence out of sync with any
visitor over the AST. Our AST visitor aborts visitation of statement
lists as soon as a jump statement has been reached. Now handler tables
are guaranteed to be dense and fully populated.

R=ishell@chromium.org
TEST=mjsunit/regress/regress-crbug-493290
BUG=chromium:493290
LOG=N

Committed: https://crrev.com/c14ba5ec48f0b6327eaadc63837f1549fbb60bd2
Cr-Commit-Position: refs/heads/master@{#28846}

[Michael Starzinger, 2015-06-08 13:41:44]

Note that architecture ports are still missing. But otherwise this is ready for
a review.

[Michael Starzinger, 2015-06-08 13:58:40]

Ports done.

[Igor Sheludko, 2015-06-08 14:30:13]

Nice! lgtm

https://codereview.chromium.org/1157213004/diff/60001/src/full-codegen.cc
File src/full-codegen.cc (right):

https://codereview.chromium.org/1157213004/diff/60001/src/full-codegen.cc#new...
src/full-codegen.cc:1485: entry->pc_offset = handler->pos();
nit: WDYT about calling it "handler_offset"?

[Michael Starzinger, 2015-06-08 14:34:27]

https://codereview.chromium.org/1157213004/diff/60001/src/full-codegen.cc
File src/full-codegen.cc (right):

https://codereview.chromium.org/1157213004/diff/60001/src/full-codegen.cc#new...
src/full-codegen.cc:1485: entry->pc_offset = handler->pos();
On 2015/06/08 14:30:13, Igor Sheludko wrote:
> nit: WDYT about calling it "handler_offset"?

Done.

[Michael Starzinger, 2015-06-08 16:18:07]

The CQ bit was checked by mstarzinger@chromium.org

[Michael Starzinger, 2015-06-08 16:18:07]

The patchset sent to the CQ was uploaded after l-g-t-m from ishell@chromium.org
Link to the patchset: https://codereview.chromium.org/1157213004/#ps80001
(title: "Addressed comments.")

[commit-bot: I haz the power, 2015-06-08 16:18:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1157213004/80001

[commit-bot: I haz the power, 2015-06-08 18:19:43]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2015-06-08 18:19:51]

Patchset 5 (id:??) landed as
https://crrev.com/c14ba5ec48f0b6327eaadc63837f1549fbb60bd2
Cr-Commit-Position: refs/heads/master@{#28846}