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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
6 | 6 |
7 #include "src/arm64/frames-arm64.h" | 7 #include "src/arm64/frames-arm64.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
10 #include "src/deoptimizer.h" | 10 #include "src/deoptimizer.h" |
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591 // on page 74. | 591 // on page 74. |
592 Label use_receiver, exit; | 592 Label use_receiver, exit; |
593 | 593 |
594 // If the result is a smi, it is *not* an object in the ECMA sense. | 594 // If the result is a smi, it is *not* an object in the ECMA sense. |
595 // x0: result | 595 // x0: result |
596 // jssp[0]: receiver (newly allocated object) | 596 // jssp[0]: receiver (newly allocated object) |
597 // jssp[1]: number of arguments (smi-tagged) | 597 // jssp[1]: number of arguments (smi-tagged) |
598 __ JumpIfSmi(x0, &use_receiver); | 598 __ JumpIfSmi(x0, &use_receiver); |
599 | 599 |
600 // If the type of the result (stored in its map) is less than | 600 // If the type of the result (stored in its map) is less than |
601 // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense. | 601 // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense. |
602 __ JumpIfObjectType(x0, x1, x3, FIRST_SPEC_OBJECT_TYPE, &exit, ge); | 602 __ JumpIfObjectType(x0, x1, x3, FIRST_JS_RECEIVER_TYPE, &exit, ge); |
603 | 603 |
604 // Throw away the result of the constructor invocation and use the | 604 // Throw away the result of the constructor invocation and use the |
605 // on-stack receiver as the result. | 605 // on-stack receiver as the result. |
606 __ Bind(&use_receiver); | 606 __ Bind(&use_receiver); |
607 __ Peek(x0, 0); | 607 __ Peek(x0, 0); |
608 | 608 |
609 // Remove the receiver from the stack, remove caller arguments, and | 609 // Remove the receiver from the stack, remove caller arguments, and |
610 // return. | 610 // return. |
611 __ Bind(&exit); | 611 __ Bind(&exit); |
612 // x0: result | 612 // x0: result |
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2044 } | 2044 } |
2045 } | 2045 } |
2046 | 2046 |
2047 | 2047 |
2048 #undef __ | 2048 #undef __ |
2049 | 2049 |
2050 } // namespace internal | 2050 } // namespace internal |
2051 } // namespace v8 | 2051 } // namespace v8 |
2052 | 2052 |
2053 #endif // V8_TARGET_ARCH_ARM | 2053 #endif // V8_TARGET_ARCH_ARM |
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