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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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