Handle the 'integer' values INFINITY and -INIFINITY in range analysis.

Handle the 'integer' values INFINITY and -INIFINITY in range analysis.

Treating the values double.INFINITY and -double.INFINITY as if they were int
at compile time also affects the SSA compiler's range analysis pass.  This
change restores the former behavior that those values were unbounded ranges.

R=floitsch@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/9879209bb99221c7df0cb25793dc48a9690df8c1

[floitsch, 2016-01-27 11:56:49]

LGTM.
Could you add a test?

[Kevin Millikin (Google), 2016-01-27 12:07:00]

Description was changed from

==========
Handle the 'integer' values INFINITY and -INIFINITY in range analysis.

Treating the values double.INFINITY and -double.INFINITY as if they were int
at compile time also affects the SSA compiler's range analysis pass.  This
change restores the former behavior that those values were unbounded ranges.

R=floitsch@google.com
BUG=
==========

to

==========
Handle the 'integer' values INFINITY and -INIFINITY in range analysis.

Treating the values double.INFINITY and -double.INFINITY as if they were int
at compile time also affects the SSA compiler's range analysis pass.  This
change restores the former behavior that those values were unbounded ranges.

R=floitsch@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/9879209bb99221c7df0cb25793dc48a9690df8c1
==========

[Kevin Millikin (Google), 2016-01-27 12:07:02]

Committed patchset #1 (id:1) manually as
9879209bb99221c7df0cb25793dc48a9690df8c1 (presubmit successful).