// if right is a smi we make a fast case if left is either a smi
// or a heapnumber.
if (CpuFeatures::IsSupported(SSE2) && right->number_info().IsSmi()) {
+ CpuFeatures::Scope use_sse2(SSE2);
__ mov(answer.reg(), left->reg());
// Fast case - both are actually smis.
if (!left->number_info().IsSmi()) {
__ SmiUntag(answer.reg());
}
+ __ bind(&do_op);
__ SmiUntag(ecx);
// Perform the operation.
switch (op) {
break;
}
frame_->Push(&value);
-
} else {
Load(node->expression());
bool overwrite =
GenericUnaryOpStub stub(Token::SUB, overwrite);
Result operand = frame_->Pop();
Result answer = frame_->CallStub(&stub, &operand);
+ answer.set_number_info(NumberInfo::Number());
frame_->Push(&answer);
break;
}
-
case Token::BIT_NOT: {
// Smi check.
JumpTarget smi_label;
JumpTarget continue_label;
Result operand = frame_->Pop();
+ NumberInfo operand_info = operand.number_info();
operand.ToRegister();
- __ test(operand.reg(), Immediate(kSmiTagMask));
- smi_label.Branch(zero, &operand, taken);
-
- GenericUnaryOpStub stub(Token::BIT_NOT, overwrite);
- Result answer = frame_->CallStub(&stub, &operand);
- continue_label.Jump(&answer);
-
- smi_label.Bind(&answer);
- answer.ToRegister();
- frame_->Spill(answer.reg());
- __ not_(answer.reg());
- __ and_(answer.reg(), ~kSmiTagMask); // Remove inverted smi-tag.
-
- continue_label.Bind(&answer);
- frame_->Push(&answer);
+ if (operand_info.IsSmi()) {
+ if (FLAG_debug_code) {
+ __ AbortIfNotSmi(operand.reg(), "Operand not a smi.");
+ }
+ frame_->Spill(operand.reg());
+ // Set smi tag bit. It will be reset by the not operation.
+ __ lea(operand.reg(), Operand(operand.reg(), kSmiTagMask));
+ __ not_(operand.reg());
+ Result answer = operand;
+ answer.set_number_info(NumberInfo::Smi());
+ frame_->Push(&answer);
+ } else {
+ __ test(operand.reg(), Immediate(kSmiTagMask));
+ smi_label.Branch(zero, &operand, taken);
+
+ GenericUnaryOpStub stub(Token::BIT_NOT, overwrite);
+ Result answer = frame_->CallStub(&stub, &operand);
+ continue_label.Jump(&answer);
+
+ smi_label.Bind(&answer);
+ answer.ToRegister();
+ frame_->Spill(answer.reg());
+ // Set smi tag bit. It will be reset by the not operation.
+ __ lea(answer.reg(), Operand(answer.reg(), kSmiTagMask));
+ __ not_(answer.reg());
+
+ continue_label.Bind(&answer);
+ if (operand_info.IsInteger32()) {
+ answer.set_number_info(NumberInfo::Integer32());
+ } else {
+ answer.set_number_info(NumberInfo::Number());
+ }
+ frame_->Push(&answer);
+ }
break;
}
-
case Token::ADD: {
// Smi check.
JumpTarget continue_label;
Result operand = frame_->Pop();
+ NumberInfo operand_info = operand.number_info();
operand.ToRegister();
__ test(operand.reg(), Immediate(kSmiTagMask));
continue_label.Branch(zero, &operand, taken);
CALL_FUNCTION, 1);
continue_label.Bind(&answer);
+ if (operand_info.IsSmi()) {
+ answer.set_number_info(NumberInfo::Smi());
+ } else if (operand_info.IsInteger32()) {
+ answer.set_number_info(NumberInfo::Integer32());
+ } else {
+ answer.set_number_info(NumberInfo::Number());
+ }
frame_->Push(&answer);
break;
}
-
default:
// NOT, DELETE, TYPEOF, and VOID are handled outside the
// switch.