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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 #if V8_TARGET_ARCH_X87 | 7 #if V8_TARGET_ARCH_X87 |
| 8 | 8 |
| 9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
| 10 #include "src/base/division-by-constant.h" | 10 #include "src/base/division-by-constant.h" |
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| 3094 bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; | 3094 bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 3095 if (divisor > 0 && neg) add(edx, dividend); | 3095 if (divisor > 0 && neg) add(edx, dividend); |
| 3096 if (divisor < 0 && !neg && mag.multiplier > 0) sub(edx, dividend); | 3096 if (divisor < 0 && !neg && mag.multiplier > 0) sub(edx, dividend); |
| 3097 if (mag.shift > 0) sar(edx, mag.shift); | 3097 if (mag.shift > 0) sar(edx, mag.shift); |
| 3098 mov(eax, dividend); | 3098 mov(eax, dividend); |
| 3099 shr(eax, 31); | 3099 shr(eax, 31); |
| 3100 add(edx, eax); | 3100 add(edx, eax); |
| 3101 } | 3101 } |
| 3102 | 3102 |
| 3103 | 3103 |
| 3104 } } // namespace v8::internal | 3104 } // namespace internal |
| 3105 } // namespace v8 |
| 3105 | 3106 |
| 3106 #endif // V8_TARGET_ARCH_X87 | 3107 #endif // V8_TARGET_ARCH_X87 |
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