Coverage Report

Created: 2022-05-17 06:19

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/Interp/PrimType.h
Line
Count
Source (jump to first uncovered line)
1
//===--- PrimType.h - Types for the constexpr VM --------------------*- C++ -*-===//
2
//
3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4
// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6
//
7
//===----------------------------------------------------------------------===//
8
//
9
// Defines the VM types and helpers operating on types.
10
//
11
//===----------------------------------------------------------------------===//
12
13
#ifndef LLVM_CLANG_AST_INTERP_TYPE_H
14
#define LLVM_CLANG_AST_INTERP_TYPE_H
15
16
#include <climits>
17
#include <cstddef>
18
#include <cstdint>
19
#include "Boolean.h"
20
#include "Integral.h"
21
#include "Pointer.h"
22
23
namespace clang {
24
namespace interp {
25
26
/// Enumeration of the primitive types of the VM.
27
enum PrimType : unsigned {
28
  PT_Sint8,
29
  PT_Uint8,
30
  PT_Sint16,
31
  PT_Uint16,
32
  PT_Sint32,
33
  PT_Uint32,
34
  PT_Sint64,
35
  PT_Uint64,
36
  PT_Bool,
37
  PT_Ptr,
38
};
39
40
/// Mapping from primitive types to their representation.
41
template <PrimType T> struct PrimConv;
42
template <> struct PrimConv<PT_Sint8> { using T = Integral<8, true>; };
43
template <> struct PrimConv<PT_Uint8> { using T = Integral<8, false>; };
44
template <> struct PrimConv<PT_Sint16> { using T = Integral<16, true>; };
45
template <> struct PrimConv<PT_Uint16> { using T = Integral<16, false>; };
46
template <> struct PrimConv<PT_Sint32> { using T = Integral<32, true>; };
47
template <> struct PrimConv<PT_Uint32> { using T = Integral<32, false>; };
48
template <> struct PrimConv<PT_Sint64> { using T = Integral<64, true>; };
49
template <> struct PrimConv<PT_Uint64> { using T = Integral<64, false>; };
50
template <> struct PrimConv<PT_Bool> { using T = Boolean; };
51
template <> struct PrimConv<PT_Ptr> { using T = Pointer; };
52
53
/// Returns the size of a primitive type in bytes.
54
size_t primSize(PrimType Type);
55
56
/// Aligns a size to the pointer alignment.
57
3
constexpr size_t align(size_t Size) {
58
3
  return ((Size + alignof(void *) - 1) / alignof(void *)) * alignof(void *);
59
3
}
60
61
0
inline bool isPrimitiveIntegral(PrimType Type) {
62
0
  switch (Type) {
63
0
  case PT_Bool:
64
0
  case PT_Sint8:
65
0
  case PT_Uint8:
66
0
  case PT_Sint16:
67
0
  case PT_Uint16:
68
0
  case PT_Sint32:
69
0
  case PT_Uint32:
70
0
  case PT_Sint64:
71
0
  case PT_Uint64:
72
0
    return true;
73
0
  default:
74
0
    return false;
75
0
  }
76
0
}
77
78
} // namespace interp
79
} // namespace clang
80
81
/// Helper macro to simplify type switches.
82
/// The macro implicitly exposes a type T in the scope of the inner block.
83
#define TYPE_SWITCH_CASE(Name, B) \
84
5
  case Name: { using T = PrimConv<Name>::T; B; 
break0
; }
85
#define TYPE_SWITCH(Expr, B)                                                   \
86
5
  do {                                                                         \
87
5
    switch (Expr) {                                                            \
88
0
      TYPE_SWITCH_CASE(PT_Sint8, B)                                            \
89
0
      TYPE_SWITCH_CASE(PT_Uint8, B)                                            \
90
0
      TYPE_SWITCH_CASE(PT_Sint16, B)                                           \
91
0
      TYPE_SWITCH_CASE(PT_Uint16, B)                                           \
92
5
      TYPE_SWITCH_CASE(PT_Sint32, B)                                           \
93
0
      TYPE_SWITCH_CASE(PT_Uint32, B)                                           \
94
0
      TYPE_SWITCH_CASE(PT_Sint64, B)                                           \
95
0
      TYPE_SWITCH_CASE(PT_Uint64, B)                                           \
96
0
      TYPE_SWITCH_CASE(PT_Bool, B)                                             \
97
5
      
TYPE_SWITCH_CASE0
(PT_Ptr, B)                                              \
98
5
    }                                                                          \
99
5
  } while (
00
)
100
#define COMPOSITE_TYPE_SWITCH(Expr, B, D)                                      \
101
9
  do {                                                                         \
102
9
    switch (Expr) {                                                            \
103
0
      TYPE_SWITCH_CASE(PT_Ptr, B)                                              \
104
9
      default: { D; 
break0
; }                                                   \
105
9
    }                                                                          \
106
9
  } while (
00
)
107
#endif