X87: Multiple stubs can point to the same calling convention

port r23546.

original commit message:
   Multiple stubs can point to the same calling convention

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/521223004

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ic/x87/ic-conventions-x87.cc

@@ -18,22 +18,20 @@ const Register LoadConvention::ReceiverRegister() { return edx; }
 const Register LoadConvention::NameRegister() { return ecx; }
 
 
-const Register VectorLoadConvention::SlotRegister() {
-  DCHECK(FLAG_vector_ics);
-  return eax;
-}
+const Register VectorLoadConvention::SlotRegister() { return eax; }
 
 
-const Register FullVectorLoadConvention::VectorRegister() {
-  DCHECK(FLAG_vector_ics);
-  return ebx;
-}
+const Register FullVectorLoadConvention::VectorRegister() { return ebx; }
 
 
 const Register StoreConvention::ReceiverRegister() { return edx; }
 const Register StoreConvention::NameRegister() { return ecx; }
 const Register StoreConvention::ValueRegister() { return eax; }
 const Register StoreConvention::MapRegister() { return ebx; }
+
+
+const Register InstanceofConvention::left() { return eax; }
+const Register InstanceofConvention::right() { return edx; }
 }
 }  // namespace v8::internal