Enable load elimination.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/31923003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17281 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Enable load elimination."

This reverts commit r17281.

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/32113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00