BUG=v8:1098
TEST=mjsunit/compiler/regress-intoverflow.js

Patch by Rodolph Perfetta from ARM Ltd.

Review URL: http://codereview.chromium.org/6312151


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6655 ce2b1a6d-e550-0410-aec6-3dcde31c8c00