1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
//===--- PrimType.h - Types for the constexpr VM ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Defines the VM types and helpers operating on types.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_INTERP_TYPE_H
#define LLVM_CLANG_AST_INTERP_TYPE_H
#include "llvm/Support/raw_ostream.h"
#include <climits>
#include <cstddef>
#include <cstdint>
namespace clang {
namespace interp {
class Pointer;
class Boolean;
class Floating;
class FunctionPointer;
class MemberPointer;
class FixedPoint;
template <bool Signed> class IntegralAP;
template <unsigned Bits, bool Signed> class Integral;
/// Enumeration of the primitive types of the VM.
enum PrimType : unsigned {
PT_Sint8 = 0,
PT_Uint8 = 1,
PT_Sint16 = 2,
PT_Uint16 = 3,
PT_Sint32 = 4,
PT_Uint32 = 5,
PT_Sint64 = 6,
PT_Uint64 = 7,
PT_IntAP = 8,
PT_IntAPS = 9,
PT_Bool = 10,
PT_FixedPoint = 11,
PT_Float = 12,
PT_Ptr = 13,
PT_FnPtr = 14,
PT_MemberPtr = 15,
};
inline constexpr bool isPtrType(PrimType T) {
return T == PT_Ptr || T == PT_FnPtr || T == PT_MemberPtr;
}
enum class CastKind : uint8_t {
Reinterpret,
Atomic,
};
inline llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
interp::CastKind CK) {
switch (CK) {
case interp::CastKind::Reinterpret:
OS << "reinterpret_cast";
break;
case interp::CastKind::Atomic:
OS << "atomic";
break;
}
return OS;
}
constexpr bool isIntegralType(PrimType T) { return T <= PT_FixedPoint; }
/// Mapping from primitive types to their representation.
template <PrimType T> struct PrimConv;
template <> struct PrimConv<PT_Sint8> {
using T = Integral<8, true>;
};
template <> struct PrimConv<PT_Uint8> {
using T = Integral<8, false>;
};
template <> struct PrimConv<PT_Sint16> {
using T = Integral<16, true>;
};
template <> struct PrimConv<PT_Uint16> {
using T = Integral<16, false>;
};
template <> struct PrimConv<PT_Sint32> {
using T = Integral<32, true>;
};
template <> struct PrimConv<PT_Uint32> {
using T = Integral<32, false>;
};
template <> struct PrimConv<PT_Sint64> {
using T = Integral<64, true>;
};
template <> struct PrimConv<PT_Uint64> {
using T = Integral<64, false>;
};
template <> struct PrimConv<PT_IntAP> {
using T = IntegralAP<false>;
};
template <> struct PrimConv<PT_IntAPS> {
using T = IntegralAP<true>;
};
template <> struct PrimConv<PT_Float> {
using T = Floating;
};
template <> struct PrimConv<PT_Bool> {
using T = Boolean;
};
template <> struct PrimConv<PT_Ptr> {
using T = Pointer;
};
template <> struct PrimConv<PT_FnPtr> {
using T = FunctionPointer;
};
template <> struct PrimConv<PT_MemberPtr> {
using T = MemberPointer;
};
template <> struct PrimConv<PT_FixedPoint> {
using T = FixedPoint;
};
/// Returns the size of a primitive type in bytes.
size_t primSize(PrimType Type);
/// Aligns a size to the pointer alignment.
constexpr size_t align(size_t Size) {
return ((Size + alignof(void *) - 1) / alignof(void *)) * alignof(void *);
}
constexpr bool aligned(uintptr_t Value) { return Value == align(Value); }
static_assert(aligned(sizeof(void *)));
static inline bool aligned(const void *P) {
return aligned(reinterpret_cast<uintptr_t>(P));
}
} // namespace interp
} // namespace clang
/// Helper macro to simplify type switches.
/// The macro implicitly exposes a type T in the scope of the inner block.
#define TYPE_SWITCH_CASE(Name, B) \
case Name: { \
using T = PrimConv<Name>::T; \
B; \
break; \
}
#define TYPE_SWITCH(Expr, B) \
do { \
switch (Expr) { \
TYPE_SWITCH_CASE(PT_Sint8, B) \
TYPE_SWITCH_CASE(PT_Uint8, B) \
TYPE_SWITCH_CASE(PT_Sint16, B) \
TYPE_SWITCH_CASE(PT_Uint16, B) \
TYPE_SWITCH_CASE(PT_Sint32, B) \
TYPE_SWITCH_CASE(PT_Uint32, B) \
TYPE_SWITCH_CASE(PT_Sint64, B) \
TYPE_SWITCH_CASE(PT_Uint64, B) \
TYPE_SWITCH_CASE(PT_IntAP, B) \
TYPE_SWITCH_CASE(PT_IntAPS, B) \
TYPE_SWITCH_CASE(PT_Float, B) \
TYPE_SWITCH_CASE(PT_Bool, B) \
TYPE_SWITCH_CASE(PT_Ptr, B) \
TYPE_SWITCH_CASE(PT_FnPtr, B) \
TYPE_SWITCH_CASE(PT_MemberPtr, B) \
TYPE_SWITCH_CASE(PT_FixedPoint, B) \
} \
} while (0)
#define INT_TYPE_SWITCH(Expr, B) \
do { \
switch (Expr) { \
TYPE_SWITCH_CASE(PT_Sint8, B) \
TYPE_SWITCH_CASE(PT_Uint8, B) \
TYPE_SWITCH_CASE(PT_Sint16, B) \
TYPE_SWITCH_CASE(PT_Uint16, B) \
TYPE_SWITCH_CASE(PT_Sint32, B) \
TYPE_SWITCH_CASE(PT_Uint32, B) \
TYPE_SWITCH_CASE(PT_Sint64, B) \
TYPE_SWITCH_CASE(PT_Uint64, B) \
TYPE_SWITCH_CASE(PT_IntAP, B) \
TYPE_SWITCH_CASE(PT_IntAPS, B) \
TYPE_SWITCH_CASE(PT_Bool, B) \
default: \
llvm_unreachable("Not an integer value"); \
} \
} while (0)
#define INT_TYPE_SWITCH_NO_BOOL(Expr, B) \
do { \
switch (Expr) { \
TYPE_SWITCH_CASE(PT_Sint8, B) \
TYPE_SWITCH_CASE(PT_Uint8, B) \
TYPE_SWITCH_CASE(PT_Sint16, B) \
TYPE_SWITCH_CASE(PT_Uint16, B) \
TYPE_SWITCH_CASE(PT_Sint32, B) \
TYPE_SWITCH_CASE(PT_Uint32, B) \
TYPE_SWITCH_CASE(PT_Sint64, B) \
TYPE_SWITCH_CASE(PT_Uint64, B) \
TYPE_SWITCH_CASE(PT_IntAP, B) \
TYPE_SWITCH_CASE(PT_IntAPS, B) \
default: \
llvm_unreachable("Not an integer value"); \
} \
} while (0)
#define COMPOSITE_TYPE_SWITCH(Expr, B, D) \
do { \
switch (Expr) { \
TYPE_SWITCH_CASE(PT_Ptr, B) \
default: { \
D; \
break; \
} \
} \
} while (0)
#endif
|
