port r24133. On X87 this check should be unnecessary too.
original commit message:
Removed superfluous deopt for ROR on ia32.
We only synthesize a ROR when we have an expression with a toplevel
'|', which returns a signed value by definition, so deopting on
negative values is not needed. ia32 was the only platform where this
was done, all other didn't have the check.
BUG=
R=weiliang.lin@intel.com
Review URL: https://codereview.chromium.org/589383003
Patch from Chunyang Dai <chunyang.dai@intel.com>.
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24160 ce2b1a6d-e550-0410-aec6-3dcde31c8c00