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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 // | 4 // |
| 5 // The intrinsic code below is executed before a method has built its frame. | 5 // The intrinsic code below is executed before a method has built its frame. |
| 6 // The return address is on the stack and the arguments below it. | 6 // The return address is on the stack and the arguments below it. |
| 7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved. | 7 // Registers EDX (arguments descriptor) and ECX (function) must be preserved. |
| 8 // Each intrinsification method returns true if the corresponding | 8 // Each intrinsification method returns true if the corresponding |
| 9 // Dart method was intrinsified. | 9 // Dart method was intrinsified. |
| 10 | 10 |
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| 716 // cannot tag the result. | 716 // cannot tag the result. |
| 717 __ cmpl(EAX, Immediate(0x40000000)); | 717 __ cmpl(EAX, Immediate(0x40000000)); |
| 718 __ j(EQUAL, &fall_through); | 718 __ j(EQUAL, &fall_through); |
| 719 __ SmiTag(EAX); | 719 __ SmiTag(EAX); |
| 720 __ ret(); | 720 __ ret(); |
| 721 __ Bind(&fall_through); | 721 __ Bind(&fall_through); |
| 722 return false; | 722 return false; |
| 723 } | 723 } |
| 724 | 724 |
| 725 | 725 |
| 726 bool Intrinsifier::Integer_negate(Assembler* assembler) { | |
| 727 Label fall_through; | |
| 728 __ movl(EAX, Address(ESP, + 1 * kWordSize)); | |
| 729 __ testl(EAX, Immediate(kSmiTagMask)); | |
| 730 __ j(NOT_ZERO, &fall_through, Assembler::kNearJump); // Non-smi value. | |
| 731 __ negl(EAX); | |
| 732 __ j(OVERFLOW, &fall_through, Assembler::kNearJump); | |
| 733 // Result is in EAX. | |
| 734 __ ret(); | |
| 735 __ Bind(&fall_through); | |
| 736 return false; | |
| 737 } | |
|
srdjan
2012/10/01 16:16:36
Why eliminate negate intrinsification? I will rest
| |
| 738 | |
| 739 | |
| 740 bool Intrinsifier::Integer_bitAndFromInteger(Assembler* assembler) { | 726 bool Intrinsifier::Integer_bitAndFromInteger(Assembler* assembler) { |
| 741 Label fall_through; | 727 Label fall_through; |
| 742 TestBothArgumentsSmis(assembler, &fall_through); | 728 TestBothArgumentsSmis(assembler, &fall_through); |
| 743 __ movl(EBX, Address(ESP, + 2 * kWordSize)); | 729 __ movl(EBX, Address(ESP, + 2 * kWordSize)); |
| 744 __ andl(EAX, EBX); | 730 __ andl(EAX, EBX); |
| 745 // Result is in EAX. | 731 // Result is in EAX. |
| 746 __ ret(); | 732 __ ret(); |
| 747 __ Bind(&fall_through); | 733 __ Bind(&fall_through); |
| 748 return false; | 734 return false; |
| 749 } | 735 } |
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| 1461 __ Bind(&is_true); | 1447 __ Bind(&is_true); |
| 1462 __ LoadObject(EAX, bool_true); | 1448 __ LoadObject(EAX, bool_true); |
| 1463 __ ret(); | 1449 __ ret(); |
| 1464 return true; | 1450 return true; |
| 1465 } | 1451 } |
| 1466 | 1452 |
| 1467 #undef __ | 1453 #undef __ |
| 1468 } // namespace dart | 1454 } // namespace dart |
| 1469 | 1455 |
| 1470 #endif // defined TARGET_ARCH_IA32 | 1456 #endif // defined TARGET_ARCH_IA32 |
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