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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/crankshaft/arm/lithium-codegen-arm.h" | 5 #include "src/crankshaft/arm/lithium-codegen-arm.h" |
6 | 6 |
7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/crankshaft/arm/lithium-gap-resolver-arm.h" | 10 #include "src/crankshaft/arm/lithium-gap-resolver-arm.h" |
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2535 DCHECK(!input.is(temp)); | 2535 DCHECK(!input.is(temp)); |
2536 DCHECK(!input.is(temp2)); | 2536 DCHECK(!input.is(temp2)); |
2537 DCHECK(!temp.is(temp2)); | 2537 DCHECK(!temp.is(temp2)); |
2538 | 2538 |
2539 __ JumpIfSmi(input, is_false); | 2539 __ JumpIfSmi(input, is_false); |
2540 | 2540 |
2541 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { | 2541 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { |
2542 // Assuming the following assertions, we can use the same compares to test | 2542 // Assuming the following assertions, we can use the same compares to test |
2543 // for both being a function type and being in the object type range. | 2543 // for both being a function type and being in the object type range. |
2544 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | 2544 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
2545 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == | |
2546 FIRST_JS_RECEIVER_TYPE + 1); | |
2547 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == | 2545 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
2548 LAST_JS_RECEIVER_TYPE - 1); | 2546 LAST_JS_RECEIVER_TYPE - 1); |
2549 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); | 2547 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
2550 __ CompareObjectType(input, temp, temp2, FIRST_JS_RECEIVER_TYPE); | 2548 __ CompareObjectType(input, temp, temp2, FIRST_JS_RECEIVER_TYPE); |
2551 __ b(lt, is_false); | 2549 __ b(lt, is_false); |
2552 __ b(eq, is_true); | |
2553 __ cmp(temp2, Operand(LAST_JS_RECEIVER_TYPE)); | 2550 __ cmp(temp2, Operand(LAST_JS_RECEIVER_TYPE)); |
2554 __ b(eq, is_true); | 2551 __ b(eq, is_true); |
2555 } else { | 2552 } else { |
2556 // Faster code path to avoid two compares: subtract lower bound from the | 2553 // Faster code path to avoid two compares: subtract lower bound from the |
2557 // actual type and do a signed compare with the width of the type range. | 2554 // actual type and do a signed compare with the width of the type range. |
2558 __ ldr(temp, FieldMemOperand(input, HeapObject::kMapOffset)); | 2555 __ ldr(temp, FieldMemOperand(input, HeapObject::kMapOffset)); |
2559 __ ldrb(temp2, FieldMemOperand(temp, Map::kInstanceTypeOffset)); | 2556 __ ldrb(temp2, FieldMemOperand(temp, Map::kInstanceTypeOffset)); |
2560 __ sub(temp2, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2557 __ sub(temp2, temp2, Operand(FIRST_JS_RECEIVER_TYPE)); |
2561 __ cmp(temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - | 2558 __ cmp(temp2, |
2562 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2559 Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - FIRST_JS_RECEIVER_TYPE)); |
2563 __ b(gt, is_false); | 2560 __ b(gt, is_false); |
2564 } | 2561 } |
2565 | 2562 |
2566 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. | 2563 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
2567 // Check if the constructor in the map is a function. | 2564 // Check if the constructor in the map is a function. |
2568 Register instance_type = ip; | 2565 Register instance_type = ip; |
2569 __ GetMapConstructor(temp, temp, temp2, instance_type); | 2566 __ GetMapConstructor(temp, temp, temp2, instance_type); |
2570 | 2567 |
2571 // Objects with a non-function constructor have class 'Object'. | 2568 // Objects with a non-function constructor have class 'Object'. |
2572 __ cmp(instance_type, Operand(JS_FUNCTION_TYPE)); | 2569 __ cmp(instance_type, Operand(JS_FUNCTION_TYPE)); |
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5643 __ push(ToRegister(instr->function())); | 5640 __ push(ToRegister(instr->function())); |
5644 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5641 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5645 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5642 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5646 } | 5643 } |
5647 | 5644 |
5648 | 5645 |
5649 #undef __ | 5646 #undef __ |
5650 | 5647 |
5651 } // namespace internal | 5648 } // namespace internal |
5652 } // namespace v8 | 5649 } // namespace v8 |
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