}
-void ICCompareStub::GenerateMiss(MacroAssembler* masm) {
- __ Push(a1, a0);
- __ push(ra);
+void ICCompareStub::GenerateKnownObjects(MacroAssembler* masm) {
+ Label miss;
+ __ And(a2, a1, a0);
+ __ JumpIfSmi(a2, &miss);
+ __ lw(a2, FieldMemOperand(a0, HeapObject::kMapOffset));
+ __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset));
+ __ Branch(&miss, ne, a2, Operand(known_map_));
+ __ Branch(&miss, ne, a3, Operand(known_map_));
+
+ __ Ret(USE_DELAY_SLOT);
+ __ subu(v0, a0, a1);
- // Call the runtime system in a fresh internal frame.
- ExternalReference miss = ExternalReference(IC_Utility(IC::kCompareIC_Miss),
- masm->isolate());
+ __ bind(&miss);
+ GenerateMiss(masm);
+}
+
+void ICCompareStub::GenerateMiss(MacroAssembler* masm) {
{
+ // Call the runtime system in a fresh internal frame.
+ ExternalReference miss =
+ ExternalReference(IC_Utility(IC::kCompareIC_Miss), masm->isolate());
FrameScope scope(masm, StackFrame::INTERNAL);
__ Push(a1, a0);
+ __ push(ra);
+ __ Push(a1, a0);
__ li(t0, Operand(Smi::FromInt(op_)));
__ push(t0);
__ CallExternalReference(miss, 3);
+ // Compute the entry point of the rewritten stub.
+ __ Addu(a2, v0, Operand(Code::kHeaderSize - kHeapObjectTag));
+ // Restore registers.
+ __ Pop(a1, a0, ra);
}
- // Compute the entry point of the rewritten stub.
- __ Addu(a2, v0, Operand(Code::kHeaderSize - kHeapObjectTag));
- // Restore registers.
- __ pop(ra);
- __ pop(a0);
- __ pop(a1);
__ Jump(a2);
}
rewritten = stub.GetCode();
} else {
ICCompareStub stub(op_, state);
+ if (state == KNOWN_OBJECTS) {
+ stub.set_known_map(Handle<Map>(Handle<JSObject>::cast(x)->map()));
+ }
rewritten = stub.GetCode();
}
set_target(*rewritten);