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1 //===- subzero/src/IceRNG.h - Random number generator -----------*- C++ -*-===// | 1 //===- subzero/src/IceRNG.h - Random number generator -----------*- C++ -*-===// |
2 // | 2 // |
3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
4 // | 4 // |
5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
7 // | 7 // |
8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
9 // | 9 // |
10 // This file declares a random number generator. | 10 // This file declares a random number generator. |
11 // | 11 // |
12 //===----------------------------------------------------------------------===// | 12 //===----------------------------------------------------------------------===// |
13 | 13 |
14 #ifndef SUBZERO_SRC_ICERNG_H | 14 #ifndef SUBZERO_SRC_ICERNG_H |
15 #define SUBZERO_SRC_ICERNG_H | 15 #define SUBZERO_SRC_ICERNG_H |
16 | 16 |
17 #include <cstdint> | 17 #include <cstdint> |
18 | 18 |
19 #include "llvm/ADT/StringRef.h" | 19 #include "llvm/ADT/StringRef.h" |
20 #include "llvm/Support/Compiler.h" | 20 #include "llvm/Support/Compiler.h" |
21 | 21 |
22 namespace Ice { | 22 namespace Ice { |
23 | 23 |
24 class RandomNumberGenerator { | 24 class RandomNumberGenerator { |
25 public: | 25 public: |
26 RandomNumberGenerator(llvm::StringRef Salt); | 26 RandomNumberGenerator(llvm::StringRef Salt); |
27 uint64_t next(uint64_t Max); | 27 uint64_t next(uint64_t Max); |
28 | 28 |
29 private: | 29 private: |
30 RandomNumberGenerator(const RandomNumberGenerator &) LLVM_DELETED_FUNCTION; | 30 RandomNumberGenerator(const RandomNumberGenerator &) = delete; |
31 RandomNumberGenerator & | 31 RandomNumberGenerator &operator=(const RandomNumberGenerator &) = delete; |
32 operator=(const RandomNumberGenerator &) LLVM_DELETED_FUNCTION; | |
33 | 32 |
34 uint64_t State; | 33 uint64_t State; |
35 }; | 34 }; |
36 | 35 |
37 // This class adds additional random number generator utilities. The | 36 // This class adds additional random number generator utilities. The |
38 // reason for the wrapper class is that we want to keep the | 37 // reason for the wrapper class is that we want to keep the |
39 // RandomNumberGenerator interface identical to LLVM's. | 38 // RandomNumberGenerator interface identical to LLVM's. |
40 class RandomNumberGeneratorWrapper { | 39 class RandomNumberGeneratorWrapper { |
41 public: | 40 public: |
42 uint64_t next(uint64_t Max) { return RNG.next(Max); } | 41 uint64_t next(uint64_t Max) { return RNG.next(Max); } |
43 bool getTrueWithProbability(float Probability); | 42 bool getTrueWithProbability(float Probability); |
44 RandomNumberGeneratorWrapper(RandomNumberGenerator &RNG) : RNG(RNG) {} | 43 RandomNumberGeneratorWrapper(RandomNumberGenerator &RNG) : RNG(RNG) {} |
45 | 44 |
46 private: | 45 private: |
47 RandomNumberGeneratorWrapper(const RandomNumberGeneratorWrapper &) | 46 RandomNumberGeneratorWrapper(const RandomNumberGeneratorWrapper &) = delete; |
48 LLVM_DELETED_FUNCTION; | |
49 RandomNumberGeneratorWrapper & | 47 RandomNumberGeneratorWrapper & |
50 operator=(const RandomNumberGeneratorWrapper &) LLVM_DELETED_FUNCTION; | 48 operator=(const RandomNumberGeneratorWrapper &) = delete; |
51 | 49 |
52 RandomNumberGenerator &RNG; | 50 RandomNumberGenerator &RNG; |
53 }; | 51 }; |
54 | 52 |
55 } // end of namespace Ice | 53 } // end of namespace Ice |
56 | 54 |
57 #endif // SUBZERO_SRC_ICERNG_H | 55 #endif // SUBZERO_SRC_ICERNG_H |
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