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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 #if V8_TARGET_ARCH_IA32 | 5 #if V8_TARGET_ARCH_IA32 |
| 6 | 6 |
| 7 #include "src/crankshaft/ia32/lithium-codegen-ia32.h" | 7 #include "src/crankshaft/ia32/lithium-codegen-ia32.h" |
| 8 | 8 |
| 9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
| 10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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| 2438 Register temp2) { | 2438 Register temp2) { |
| 2439 DCHECK(!input.is(temp)); | 2439 DCHECK(!input.is(temp)); |
| 2440 DCHECK(!input.is(temp2)); | 2440 DCHECK(!input.is(temp2)); |
| 2441 DCHECK(!temp.is(temp2)); | 2441 DCHECK(!temp.is(temp2)); |
| 2442 __ JumpIfSmi(input, is_false); | 2442 __ JumpIfSmi(input, is_false); |
| 2443 | 2443 |
| 2444 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { | 2444 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { |
| 2445 // Assuming the following assertions, we can use the same compares to test | 2445 // Assuming the following assertions, we can use the same compares to test |
| 2446 // for both being a function type and being in the object type range. | 2446 // for both being a function type and being in the object type range. |
| 2447 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | 2447 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2448 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == | |
| 2449 FIRST_JS_RECEIVER_TYPE + 1); | |
| 2450 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == | 2448 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2451 LAST_JS_RECEIVER_TYPE - 1); | 2449 LAST_JS_RECEIVER_TYPE - 1); |
| 2452 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); | 2450 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 2453 __ CmpObjectType(input, FIRST_JS_RECEIVER_TYPE, temp); | 2451 __ CmpObjectType(input, FIRST_JS_RECEIVER_TYPE, temp); |
| 2454 __ j(below, is_false); | 2452 __ j(below, is_false); |
| 2455 __ j(equal, is_true); | |
| 2456 __ CmpInstanceType(temp, LAST_JS_RECEIVER_TYPE); | 2453 __ CmpInstanceType(temp, LAST_JS_RECEIVER_TYPE); |
| 2457 __ j(equal, is_true); | 2454 __ j(equal, is_true); |
| 2458 } else { | 2455 } else { |
| 2459 // Faster code path to avoid two compares: subtract lower bound from the | 2456 // Faster code path to avoid two compares: subtract lower bound from the |
| 2460 // actual type and do a signed compare with the width of the type range. | 2457 // actual type and do a signed compare with the width of the type range. |
| 2461 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); | 2458 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 2462 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); | 2459 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 2463 __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2460 __ sub(Operand(temp2), Immediate(FIRST_JS_RECEIVER_TYPE)); |
| 2464 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - | 2461 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2465 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2462 FIRST_JS_RECEIVER_TYPE)); |
| 2466 __ j(above, is_false); | 2463 __ j(above, is_false); |
| 2467 } | 2464 } |
| 2468 | 2465 |
| 2469 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. | 2466 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
| 2470 // Check if the constructor in the map is a function. | 2467 // Check if the constructor in the map is a function. |
| 2471 __ GetMapConstructor(temp, temp, temp2); | 2468 __ GetMapConstructor(temp, temp, temp2); |
| 2472 // Objects with a non-function constructor have class 'Object'. | 2469 // Objects with a non-function constructor have class 'Object'. |
| 2473 __ CmpInstanceType(temp2, JS_FUNCTION_TYPE); | 2470 __ CmpInstanceType(temp2, JS_FUNCTION_TYPE); |
| 2474 if (String::Equals(class_name, isolate()->factory()->Object_string())) { | 2471 if (String::Equals(class_name, isolate()->factory()->Object_string())) { |
| 2475 __ j(not_equal, is_true); | 2472 __ j(not_equal, is_true); |
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| 5510 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5507 RecordSafepoint(Safepoint::kNoLazyDeopt); |
| 5511 } | 5508 } |
| 5512 | 5509 |
| 5513 | 5510 |
| 5514 #undef __ | 5511 #undef __ |
| 5515 | 5512 |
| 5516 } // namespace internal | 5513 } // namespace internal |
| 5517 } // namespace v8 | 5514 } // namespace v8 |
| 5518 | 5515 |
| 5519 #endif // V8_TARGET_ARCH_IA32 | 5516 #endif // V8_TARGET_ARCH_IA32 |
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