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| 1 | void LCodeGen::DoArrayForEach(LArrayForEach* instr) {
| |
| 2 | Register receiver = ToRegister(instr->receiver()); | |
| 3 | Register function = ToRegister(instr->function()); | |
| 4 | Register index = ToRegister(instr->index()); | |
| 5 | Register length = ToRegister(instr->length()); | |
| 6 | Register scratch = ToRegister(instr->temp()); | |
| 7 | ||
| 8 | Label loop, done, body, footer; | |
| 9 | ||
| 10 | ASSERT(function.is(edi)); // Required by InvokeFunction. | |
| 11 | ||
| 12 | __ RecordComment(";;; check JSFunction");
| |
| 13 | __ test(function, Immediate(kSmiTagMask)); | |
| 14 | DeoptimizeIf(zero, instr->environment()); | |
| 15 | __ CmpObjectType(function, JS_FUNCTION_TYPE, scratch); | |
| 16 | DeoptimizeIf(not_equal, instr->environment()); | |
| 17 | ||
| 18 | LPointerMap* pointers = instr->pointer_map(); | |
| 19 | RecordPosition(pointers->position()); | |
| 20 | SafepointGenerator safepoint_generator( | |
| 21 | this, pointers, Safepoint::kLazyDeopt); | |
| 22 | ParameterCount actual(3); | |
| 23 | ||
| 24 | __ mov(length, FieldOperand(receiver, JSArray::kLengthOffset)); | |
| 25 | __ mov(scratch, receiver); | |
| 26 | __ mov(receiver, FieldOperand(receiver, JSObject::kElementsOffset)); | |
| 27 | __ xor_(index, index); | |
| 28 | __ bind(&loop); | |
| 29 | __ cmp(index, length); | |
| 30 | __ j(above_equal, &done, Label::kNear); | |
| 31 | //How to add stack-check here | |
| 32 | __ mov(edx, Operand(receiver, index, times_half_pointer_size, | |
| 33 | FixedArray::kHeaderSize - 1)); | |
| 34 | __ test(edx, Immediate(kSmiTagMask)); | |
| 35 | __ j(zero, &body, Label::kNear); | |
| 36 | __ cmp(FieldOperand(edx, HeapObject::kMapOffset), | |
| 37 | factory()->the_hole_value()); | |
| 38 | __ j(equal, &footer, Label::kNear); | |
| 39 | __ bind(&body); | |
| 40 | //(item, index, array) | |
| 41 | __ push(edx); | |
| 42 | __ push(index); | |
| 43 | __ push(scratch); | |
| 44 | __ InvokeFunction(function, actual, CALL_FUNCTION, | |
| 45 | safepoint_generator, CALL_AS_FUNCTION); | |
| 46 | //todo check that array map didn't change | |
| 47 | __ bind(&footer); | |
| 48 | __ add(index, Immediate(2)); | |
| 49 | __ jmp(&loop); | |
| 50 | __ bind(&done); | |
| 51 | } |
