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f22341db | 1 | /* This file is part of the Vc library. |
2 | ||
3 | Copyright (C) 2010-2012 Matthias Kretz <kretz@kde.org> | |
4 | ||
5 | Vc is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU Lesser General Public License as | |
7 | published by the Free Software Foundation, either version 3 of | |
8 | the License, or (at your option) any later version. | |
9 | ||
10 | Vc is distributed in the hope that it will be useful, but | |
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with Vc. If not, see <http://www.gnu.org/licenses/>. | |
17 | ||
18 | */ | |
19 | ||
20 | #ifndef VC_COMMON_STORAGE_H | |
21 | #define VC_COMMON_STORAGE_H | |
22 | ||
23 | #include "aliasingentryhelper.h" | |
24 | #include "macros.h" | |
c017a39f | 25 | #include "types.h" |
f22341db | 26 | |
c017a39f | 27 | namespace AliRoot { |
f22341db | 28 | namespace Vc |
29 | { | |
30 | namespace Common | |
31 | { | |
32 | ||
c017a39f | 33 | template<typename _VectorType, typename _EntryType, typename VectorTypeBase = _VectorType> class VectorMemoryUnion |
f22341db | 34 | { |
35 | public: | |
36 | typedef _VectorType VectorType; | |
37 | typedef _EntryType EntryType; | |
c017a39f | 38 | typedef EntryType AliasingEntryType Vc_MAY_ALIAS; |
39 | Vc_ALWAYS_INLINE VectorMemoryUnion() { assertCorrectAlignment(&v()); } | |
f22341db | 40 | #if defined VC_ICC || defined VC_MSVC |
c017a39f | 41 | Vc_ALWAYS_INLINE VectorMemoryUnion(const VectorType &x) { data.v = x; assertCorrectAlignment(&data.v); } |
42 | Vc_ALWAYS_INLINE VectorMemoryUnion &operator=(const VectorType &x) { | |
f22341db | 43 | data.v = x; return *this; |
44 | } | |
45 | ||
c017a39f | 46 | Vc_ALWAYS_INLINE Vc_PURE VectorType &v() { return reinterpret_cast<VectorType &>(data.v); } |
47 | Vc_ALWAYS_INLINE Vc_PURE const VectorType &v() const { return reinterpret_cast<const VectorType &>(data.v); } | |
f22341db | 48 | |
49 | #if defined VC_ICC | |
c017a39f | 50 | Vc_ALWAYS_INLINE Vc_PURE AliasingEntryHelper<VectorMemoryUnion> m(size_t index) { |
51 | return AliasingEntryHelper<VectorMemoryUnion>(this, index); | |
f22341db | 52 | } |
c017a39f | 53 | Vc_ALWAYS_INLINE void assign(size_t index, EntryType x) { |
f22341db | 54 | data.m[index] = x; |
55 | } | |
c017a39f | 56 | Vc_ALWAYS_INLINE Vc_PURE EntryType read(size_t index) const { |
f22341db | 57 | return data.m[index]; |
58 | } | |
59 | #else | |
c017a39f | 60 | Vc_ALWAYS_INLINE Vc_PURE EntryType &m(size_t index) { |
f22341db | 61 | return data.m[index]; |
62 | } | |
63 | #endif | |
64 | ||
c017a39f | 65 | Vc_ALWAYS_INLINE Vc_PURE EntryType m(size_t index) const { |
f22341db | 66 | return data.m[index]; |
67 | } | |
68 | ||
c017a39f | 69 | #ifdef VC_COMPILE_BENCHMARKS |
70 | public: | |
71 | #endif | |
f22341db | 72 | private: |
73 | union VectorScalarUnion { | |
c017a39f | 74 | VectorTypeBase v; |
75 | EntryType m[sizeof(VectorTypeBase)/sizeof(EntryType)]; | |
f22341db | 76 | } data; |
77 | #else | |
c017a39f | 78 | Vc_ALWAYS_INLINE VectorMemoryUnion(VectorType x) : data(x) { assertCorrectAlignment(&data); } |
79 | Vc_ALWAYS_INLINE VectorMemoryUnion &operator=(VectorType x) { | |
f22341db | 80 | data = x; return *this; |
81 | } | |
82 | ||
c017a39f | 83 | Vc_ALWAYS_INLINE Vc_PURE VectorType &v() { return data; } |
84 | Vc_ALWAYS_INLINE Vc_PURE const VectorType &v() const { return data; } | |
f22341db | 85 | |
c017a39f | 86 | Vc_ALWAYS_INLINE Vc_PURE AliasingEntryType &m(size_t index) { |
f22341db | 87 | return reinterpret_cast<AliasingEntryType *>(&data)[index]; |
88 | } | |
89 | ||
c017a39f | 90 | Vc_ALWAYS_INLINE Vc_PURE EntryType m(size_t index) const { |
f22341db | 91 | return reinterpret_cast<const AliasingEntryType *>(&data)[index]; |
92 | } | |
93 | ||
94 | private: | |
c017a39f | 95 | #ifdef VC_COMPILE_BENCHMARKS |
96 | public: | |
97 | #endif | |
f22341db | 98 | VectorType data; |
99 | #endif | |
100 | }; | |
101 | ||
102 | #if VC_GCC == 0x40700 || (VC_GCC >= 0x40600 && VC_GCC <= 0x40603) | |
103 | // workaround bug 52736 in GCC | |
c017a39f | 104 | template<typename T, typename V> static Vc_ALWAYS_INLINE Vc_CONST T &vectorMemoryUnionAliasedMember(V *data, size_t index) { |
f22341db | 105 | if (__builtin_constant_p(index) && index == 0) { |
106 | T *ret; | |
107 | asm("mov %1,%0" : "=r"(ret) : "r"(data)); | |
108 | return *ret; | |
109 | } else { | |
110 | return reinterpret_cast<T *>(data)[index]; | |
111 | } | |
112 | } | |
c017a39f | 113 | template<> Vc_ALWAYS_INLINE Vc_PURE VectorMemoryUnion<__m128d, double>::AliasingEntryType &VectorMemoryUnion<__m128d, double>::m(size_t index) { |
f22341db | 114 | return vectorMemoryUnionAliasedMember<AliasingEntryType>(&data, index); |
115 | } | |
c017a39f | 116 | template<> Vc_ALWAYS_INLINE Vc_PURE VectorMemoryUnion<__m128i, long long>::AliasingEntryType &VectorMemoryUnion<__m128i, long long>::m(size_t index) { |
f22341db | 117 | return vectorMemoryUnionAliasedMember<AliasingEntryType>(&data, index); |
118 | } | |
c017a39f | 119 | template<> Vc_ALWAYS_INLINE Vc_PURE VectorMemoryUnion<__m128i, unsigned long long>::AliasingEntryType &VectorMemoryUnion<__m128i, unsigned long long>::m(size_t index) { |
f22341db | 120 | return vectorMemoryUnionAliasedMember<AliasingEntryType>(&data, index); |
121 | } | |
122 | #endif | |
123 | ||
124 | } // namespace Common | |
125 | } // namespace Vc | |
c017a39f | 126 | } // namespace AliRoot |
f22341db | 127 | |
128 | #include "undomacros.h" | |
129 | ||
130 | #endif // VC_COMMON_STORAGE_H |