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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_X64 | 7 #if V8_TARGET_ARCH_X64 |
| 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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| 5090 bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; | 5090 bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 5091 if (divisor > 0 && neg) addl(rdx, dividend); | 5091 if (divisor > 0 && neg) addl(rdx, dividend); |
| 5092 if (divisor < 0 && !neg && mag.multiplier > 0) subl(rdx, dividend); | 5092 if (divisor < 0 && !neg && mag.multiplier > 0) subl(rdx, dividend); |
| 5093 if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); | 5093 if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); |
| 5094 movl(rax, dividend); | 5094 movl(rax, dividend); |
| 5095 shrl(rax, Immediate(31)); | 5095 shrl(rax, Immediate(31)); |
| 5096 addl(rdx, rax); | 5096 addl(rdx, rax); |
| 5097 } | 5097 } |
| 5098 | 5098 |
| 5099 | 5099 |
| 5100 } } // namespace v8::internal | 5100 } // namespace internal |
| 5101 } // namespace v8 |
| 5101 | 5102 |
| 5102 #endif // V8_TARGET_ARCH_X64 | 5103 #endif // V8_TARGET_ARCH_X64 |
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