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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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_COMPILER_INTRINSICS_H_ | 5 #ifndef V8_COMPILER_INTRINSICS_H_ |
6 #define V8_COMPILER_INTRINSICS_H_ | 6 #define V8_COMPILER_INTRINSICS_H_ |
7 | 7 |
| 8 #include "src/base/macros.h" |
| 9 |
8 namespace v8 { | 10 namespace v8 { |
9 namespace internal { | 11 namespace internal { |
10 | 12 |
11 class CompilerIntrinsics { | 13 class CompilerIntrinsics { |
12 public: | 14 public: |
13 // Returns number of zero bits preceding least significant 1 bit. | 15 // Returns number of zero bits preceding least significant 1 bit. |
14 // Undefined for zero value. | 16 // Undefined for zero value. |
15 INLINE(static int CountTrailingZeros(uint32_t value)); | 17 INLINE(static int CountTrailingZeros(uint32_t value)); |
16 | 18 |
17 // Returns number of zero bits following most significant 1 bit. | 19 // Returns number of zero bits following most significant 1 bit. |
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62 return value; | 64 return value; |
63 } | 65 } |
64 | 66 |
65 #else | 67 #else |
66 #error Unsupported compiler | 68 #error Unsupported compiler |
67 #endif | 69 #endif |
68 | 70 |
69 } } // namespace v8::internal | 71 } } // namespace v8::internal |
70 | 72 |
71 #endif // V8_COMPILER_INTRINSICS_H_ | 73 #endif // V8_COMPILER_INTRINSICS_H_ |
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