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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 #ifndef V8_GLOBALS_H_ | 5 #ifndef V8_GLOBALS_H_ |
6 #define V8_GLOBALS_H_ | 6 #define V8_GLOBALS_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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293 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; | 293 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; |
294 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; | 294 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; |
295 | 295 |
296 // Desired alignment for pointers. | 296 // Desired alignment for pointers. |
297 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); | 297 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); |
298 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; | 298 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; |
299 | 299 |
300 // Desired alignment for double values. | 300 // Desired alignment for double values. |
301 const intptr_t kDoubleAlignment = 8; | 301 const intptr_t kDoubleAlignment = 8; |
302 const intptr_t kDoubleAlignmentMask = kDoubleAlignment - 1; | 302 const intptr_t kDoubleAlignmentMask = kDoubleAlignment - 1; |
| 303 const intptr_t kDoubleAlignmentMaskTagged = kDoubleAlignmentMask - 1; |
303 | 304 |
304 // Desired alignment for 128 bit SIMD values. | 305 // Desired alignment for 128 bit SIMD values. |
305 const intptr_t kSimd128Alignment = 16; | 306 const intptr_t kSimd128Alignment = 16; |
306 const intptr_t kSimd128AlignmentMask = kSimd128Alignment - 1; | 307 const intptr_t kSimd128AlignmentMask = kSimd128Alignment - 1; |
307 | 308 |
308 // Desired alignment for generated code is 32 bytes (to improve cache line | 309 // Desired alignment for generated code is 32 bytes (to improve cache line |
309 // utilization). | 310 // utilization). |
310 const int kCodeAlignmentBits = 5; | 311 const int kCodeAlignmentBits = 5; |
311 const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits; | 312 const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits; |
312 const intptr_t kCodeAlignmentMask = kCodeAlignment - 1; | 313 const intptr_t kCodeAlignmentMask = kCodeAlignment - 1; |
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1069 return static_cast<uint32_t>(bit_cast<uintptr_t>(address) >> | 1070 return static_cast<uint32_t>(bit_cast<uintptr_t>(address) >> |
1070 kPointerSizeLog2); | 1071 kPointerSizeLog2); |
1071 } | 1072 } |
1072 | 1073 |
1073 } // namespace internal | 1074 } // namespace internal |
1074 } // namespace v8 | 1075 } // namespace v8 |
1075 | 1076 |
1076 namespace i = v8::internal; | 1077 namespace i = v8::internal; |
1077 | 1078 |
1078 #endif // V8_GLOBALS_H_ | 1079 #endif // V8_GLOBALS_H_ |
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