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
switch (instr->op()) {
case Token::ROR:
__ ror_cl(ToRegister(left));
- if (instr->can_deopt()) {
- __ test(ToRegister(left), ToRegister(left));
- DeoptimizeIf(sign, instr);
- }
break;
case Token::SAR:
__ sar_cl(ToRegister(left));