Skip unreachable blocks when looking for next emitted block.

Skip unreachable blocks when looking for next emitted block.

Goto does not emit a jump if the target is the next emitted block.
However, if there is an unreachable block between Goto and the jump
target, we still emit a jump even though the unreachable block is
not actually emitted. That jump is unnecessary.

R=jkummerow@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=19739

[Yang, 2014-03-07 14:59:00]

On 2014/02/21 08:37:43, Yang wrote:

ping

[Jakob Kummerow, 2014-03-07 18:15:22]

LGTM.

Sorry, this fell through the cracks.

[Yang, 2014-03-10 07:42:14]

Committed patchset #1 manually as r19739 (presubmit successful).