Tweaks in the VM's typed_data implementations.

Tweaks in the VM's typed_data implementations.

Moving the throw of RangeError out of the _throwRangeError helper
may benefit LICM, since that block is now considered a method exit (and
not part of a enclosing loop).

_throwRangeError was not inlined because the call site was considered
cold by invocation counters (most programs don't throw RangeError).

Also, I renamed some misleading names in the optimizer.

R=zerny@google.com

Committed: https://code.google.com/p/dart/source/detail?r=42951

[Florian Schneider, 2015-01-16 10:42:34]

fschneider@google.com changed reviewers:
+ zerny@google.com

[zerny-google, 2015-01-16 11:15:58]

lgtm

[Florian Schneider, 2015-01-16 11:30:55]

Committed patchset #2 (id:20001) manually as r42951 (presubmit successful).