Merged r14638 into 3.17 branch.

Fix missing hole check for loads from Smi arrays when all uses are changes

BUG=chromium:233737
R=danno@chromium.org

Review URL: https://codereview.chromium.org/14698021

git-svn-id: https://v8.googlecode.com/svn/branches/3.17@14687 ce2b1a6d-e550-0410-aec6-3dcde31c8c00