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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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297 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; | 297 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; |
298 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; | 298 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; |
299 | 299 |
300 // Desired alignment for pointers. | 300 // Desired alignment for pointers. |
301 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); | 301 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); |
302 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; | 302 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; |
303 | 303 |
304 // Desired alignment for double values. | 304 // Desired alignment for double values. |
305 const intptr_t kDoubleAlignment = 8; | 305 const intptr_t kDoubleAlignment = 8; |
306 const intptr_t kDoubleAlignmentMask = kDoubleAlignment - 1; | 306 const intptr_t kDoubleAlignmentMask = kDoubleAlignment - 1; |
307 const intptr_t kDoubleAlignmentMaskTagged = kDoubleAlignmentMask - 1; | |
308 | 307 |
309 // Desired alignment for 128 bit SIMD values. | 308 // Desired alignment for 128 bit SIMD values. |
310 const intptr_t kSimd128Alignment = 16; | 309 const intptr_t kSimd128Alignment = 16; |
311 const intptr_t kSimd128AlignmentMask = kSimd128Alignment - 1; | 310 const intptr_t kSimd128AlignmentMask = kSimd128Alignment - 1; |
312 | 311 |
313 // Desired alignment for generated code is 32 bytes (to improve cache line | 312 // Desired alignment for generated code is 32 bytes (to improve cache line |
314 // utilization). | 313 // utilization). |
315 const int kCodeAlignmentBits = 5; | 314 const int kCodeAlignmentBits = 5; |
316 const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits; | 315 const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits; |
317 const intptr_t kCodeAlignmentMask = kCodeAlignment - 1; | 316 const intptr_t kCodeAlignmentMask = kCodeAlignment - 1; |
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1087 return static_cast<uint32_t>(bit_cast<uintptr_t>(address) >> | 1086 return static_cast<uint32_t>(bit_cast<uintptr_t>(address) >> |
1088 kPointerSizeLog2); | 1087 kPointerSizeLog2); |
1089 } | 1088 } |
1090 | 1089 |
1091 } // namespace internal | 1090 } // namespace internal |
1092 } // namespace v8 | 1091 } // namespace v8 |
1093 | 1092 |
1094 namespace i = v8::internal; | 1093 namespace i = v8::internal; |
1095 | 1094 |
1096 #endif // V8_GLOBALS_H_ | 1095 #endif // V8_GLOBALS_H_ |
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