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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/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/code-stubs.h" | 7 #include "src/code-stubs.h" |
8 #include "src/hydrogen-osr.h" | 8 #include "src/hydrogen-osr.h" |
9 #include "src/mips64/lithium-codegen-mips64.h" | 9 #include "src/mips64/lithium-codegen-mips64.h" |
10 #include "src/mips64/lithium-gap-resolver-mips64.h" | 10 #include "src/mips64/lithium-gap-resolver-mips64.h" |
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2570 Handle<String>class_name, | 2570 Handle<String>class_name, |
2571 Register input, | 2571 Register input, |
2572 Register temp, | 2572 Register temp, |
2573 Register temp2) { | 2573 Register temp2) { |
2574 DCHECK(!input.is(temp)); | 2574 DCHECK(!input.is(temp)); |
2575 DCHECK(!input.is(temp2)); | 2575 DCHECK(!input.is(temp2)); |
2576 DCHECK(!temp.is(temp2)); | 2576 DCHECK(!temp.is(temp2)); |
2577 | 2577 |
2578 __ JumpIfSmi(input, is_false); | 2578 __ JumpIfSmi(input, is_false); |
2579 | 2579 |
2580 if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Function"))) { | 2580 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { |
2581 // Assuming the following assertions, we can use the same compares to test | 2581 // Assuming the following assertions, we can use the same compares to test |
2582 // for both being a function type and being in the object type range. | 2582 // for both being a function type and being in the object type range. |
2583 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | 2583 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
2584 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == | 2584 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
2585 FIRST_SPEC_OBJECT_TYPE + 1); | 2585 FIRST_SPEC_OBJECT_TYPE + 1); |
2586 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == | 2586 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
2587 LAST_SPEC_OBJECT_TYPE - 1); | 2587 LAST_SPEC_OBJECT_TYPE - 1); |
2588 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); | 2588 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
2589 | 2589 |
2590 __ GetObjectType(input, temp, temp2); | 2590 __ GetObjectType(input, temp, temp2); |
2591 __ Branch(is_false, lt, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); | 2591 __ Branch(is_false, lt, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
2592 __ Branch(is_true, eq, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); | 2592 __ Branch(is_true, eq, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
2593 __ Branch(is_true, eq, temp2, Operand(LAST_SPEC_OBJECT_TYPE)); | 2593 __ Branch(is_true, eq, temp2, Operand(LAST_SPEC_OBJECT_TYPE)); |
2594 } else { | 2594 } else { |
2595 // Faster code path to avoid two compares: subtract lower bound from the | 2595 // Faster code path to avoid two compares: subtract lower bound from the |
2596 // actual type and do a signed compare with the width of the type range. | 2596 // actual type and do a signed compare with the width of the type range. |
2597 __ GetObjectType(input, temp, temp2); | 2597 __ GetObjectType(input, temp, temp2); |
2598 __ Dsubu(temp2, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2598 __ Dsubu(temp2, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
2599 __ Branch(is_false, gt, temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - | 2599 __ Branch(is_false, gt, temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
2600 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2600 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
2601 } | 2601 } |
2602 | 2602 |
2603 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. | 2603 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
2604 // Check if the constructor in the map is a function. | 2604 // Check if the constructor in the map is a function. |
2605 __ ld(temp, FieldMemOperand(temp, Map::kConstructorOffset)); | 2605 __ ld(temp, FieldMemOperand(temp, Map::kConstructorOffset)); |
2606 | 2606 |
2607 // Objects with a non-function constructor have class 'Object'. | 2607 // Objects with a non-function constructor have class 'Object'. |
2608 __ GetObjectType(temp, temp2, temp2); | 2608 __ GetObjectType(temp, temp2, temp2); |
2609 if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Object"))) { | 2609 if (String::Equals(class_name, isolate()->factory()->Object_string())) { |
2610 __ Branch(is_true, ne, temp2, Operand(JS_FUNCTION_TYPE)); | 2610 __ Branch(is_true, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
2611 } else { | 2611 } else { |
2612 __ Branch(is_false, ne, temp2, Operand(JS_FUNCTION_TYPE)); | 2612 __ Branch(is_false, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
2613 } | 2613 } |
2614 | 2614 |
2615 // temp now contains the constructor function. Grab the | 2615 // temp now contains the constructor function. Grab the |
2616 // instance class name from there. | 2616 // instance class name from there. |
2617 __ ld(temp, FieldMemOperand(temp, JSFunction::kSharedFunctionInfoOffset)); | 2617 __ ld(temp, FieldMemOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
2618 __ ld(temp, FieldMemOperand(temp, | 2618 __ ld(temp, FieldMemOperand(temp, |
2619 SharedFunctionInfo::kInstanceClassNameOffset)); | 2619 SharedFunctionInfo::kInstanceClassNameOffset)); |
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5941 __ li(at, scope_info); | 5941 __ li(at, scope_info); |
5942 __ Push(at, ToRegister(instr->function())); | 5942 __ Push(at, ToRegister(instr->function())); |
5943 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5943 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5944 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5944 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5945 } | 5945 } |
5946 | 5946 |
5947 | 5947 |
5948 #undef __ | 5948 #undef __ |
5949 | 5949 |
5950 } } // namespace v8::internal | 5950 } } // namespace v8::internal |
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