Regression fix: HForceRepresentation shouldn't be an idef.

Regression fix: HForceRepresentation shouldn't be an idef.

Instead, code sites that are interested in underlying constant integer values
should use HValue::IsInteger32Constant(). The issue is that the infer representation phase shouldn't "see through" HForceRepresentation nodes to an underlying, and less specific representation.

R=mstarzinger@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17787

[mvstanton, 2013-11-15 11:21:56]

Hi guys, PTAL,
--Michael

[Michael Starzinger, 2013-11-15 11:23:45]

LGTM.

[mvstanton, 2013-11-15 12:11:06]

Committed patchset #1 manually as r17787 (presubmit successful).