X87: ReceiverCheckMode needs to be utilized further.
port r24704.
original commit message:
ReceiverCheckMode needs to be utilized further.
The parameter wasn't being passed appropriately, and there was an extra
opportunity to use mode RECEIVER_IS_STRING in SubStringStub.
BUG=
R=weiliang.lin@intel.com
Review URL: https://codereview.chromium.org/
664973002
Patch from Chunyang Dai <chunyang.dai@intel.com>.
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24714
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00