scripts/gcc-plugins/gcc-generate-rtl-pass.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Generator for RTL pass related boilerplate code/data
   4  *
   5  * Supports gcc 4.5-6
   6  *
   7  * Usage:
   8  *
   9  * 1. before inclusion define PASS_NAME
  10  * 2. before inclusion define NO_* for unimplemented callbacks
  11  *    NO_GATE
  12  *    NO_EXECUTE
  13  * 3. before inclusion define PROPERTIES_* and TODO_FLAGS_* to override
  14  *    the default 0 values
  15  * 4. for convenience, all the above will be undefined after inclusion!
  16  * 5. the only exported name is make_PASS_NAME_pass() to register with gcc
  17  */
  18
  19 #ifndef PASS_NAME
  20 #error at least PASS_NAME must be defined
  21 #else
  22 #define __GCC_PLUGIN_STRINGIFY(n)       #n
  23 #define _GCC_PLUGIN_STRINGIFY(n)        __GCC_PLUGIN_STRINGIFY(n)
  24 #define _GCC_PLUGIN_CONCAT2(x, y)       x ## y
  25 #define _GCC_PLUGIN_CONCAT3(x, y, z)    x ## y ## z
  26
  27 #define __PASS_NAME_PASS_DATA(n)        _GCC_PLUGIN_CONCAT2(n, _pass_data)
  28 #define _PASS_NAME_PASS_DATA            __PASS_NAME_PASS_DATA(PASS_NAME)
  29
  30 #define __PASS_NAME_PASS(n)             _GCC_PLUGIN_CONCAT2(n, _pass)
  31 #define _PASS_NAME_PASS                 __PASS_NAME_PASS(PASS_NAME)
  32
  33 #define _PASS_NAME_NAME                 _GCC_PLUGIN_STRINGIFY(PASS_NAME)
  34
  35 #define __MAKE_PASS_NAME_PASS(n)        _GCC_PLUGIN_CONCAT3(make_, n, _pass)
  36 #define _MAKE_PASS_NAME_PASS            __MAKE_PASS_NAME_PASS(PASS_NAME)
  37
  38 #ifdef NO_GATE
  39 #define _GATE NULL
  40 #define _HAS_GATE false
  41 #else
  42 #define __GATE(n)                       _GCC_PLUGIN_CONCAT2(n, _gate)
  43 #define _GATE                           __GATE(PASS_NAME)
  44 #define _HAS_GATE true
  45 #endif
  46
  47 #ifdef NO_EXECUTE
  48 #define _EXECUTE NULL
  49 #define _HAS_EXECUTE false
  50 #else
  51 #define __EXECUTE(n)                    _GCC_PLUGIN_CONCAT2(n, _execute)
  52 #define _EXECUTE                        __EXECUTE(PASS_NAME)
  53 #define _HAS_EXECUTE true
  54 #endif
  55
  56 #ifndef PROPERTIES_REQUIRED
  57 #define PROPERTIES_REQUIRED 0
  58 #endif
  59
  60 #ifndef PROPERTIES_PROVIDED
  61 #define PROPERTIES_PROVIDED 0
  62 #endif
  63
  64 #ifndef PROPERTIES_DESTROYED
  65 #define PROPERTIES_DESTROYED 0
  66 #endif
  67
  68 #ifndef TODO_FLAGS_START
  69 #define TODO_FLAGS_START 0
  70 #endif
  71
  72 #ifndef TODO_FLAGS_FINISH
  73 #define TODO_FLAGS_FINISH 0
  74 #endif
  75
  76 namespace {
  77 static const pass_data _PASS_NAME_PASS_DATA = {
  78                 .type                   = RTL_PASS,
  79                 .name                   = _PASS_NAME_NAME,
  80                 .optinfo_flags          = OPTGROUP_NONE,
  81 #if BUILDING_GCC_VERSION >= 5000
  82 #elif BUILDING_GCC_VERSION == 4009
  83                 .has_gate               = _HAS_GATE,
  84                 .has_execute            = _HAS_EXECUTE,
  85 #else
  86                 .gate                   = _GATE,
  87                 .execute                = _EXECUTE,
  88                 .sub                    = NULL,
  89                 .next                   = NULL,
  90                 .static_pass_number     = 0,
  91 #endif
  92                 .tv_id                  = TV_NONE,
  93                 .properties_required    = PROPERTIES_REQUIRED,
  94                 .properties_provided    = PROPERTIES_PROVIDED,
  95                 .properties_destroyed   = PROPERTIES_DESTROYED,
  96                 .todo_flags_start       = TODO_FLAGS_START,
  97                 .todo_flags_finish      = TODO_FLAGS_FINISH,
  98 };
  99
 100 class _PASS_NAME_PASS : public rtl_opt_pass {
 101 public:
 102         _PASS_NAME_PASS() : rtl_opt_pass(_PASS_NAME_PASS_DATA, g) {}
 103
 104 #ifndef NO_GATE
 105 #if BUILDING_GCC_VERSION >= 5000
 106         virtual bool gate(function *) { return _GATE(); }
 107 #else
 108         virtual bool gate(void) { return _GATE(); }
 109 #endif
 110 #endif
 111
 112         virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
 113
 114 #ifndef NO_EXECUTE
 115 #if BUILDING_GCC_VERSION >= 5000
 116         virtual unsigned int execute(function *) { return _EXECUTE(); }
 117 #else
 118         virtual unsigned int execute(void) { return _EXECUTE(); }
 119 #endif
 120 #endif
 121 };
 122 }
 123
 124 opt_pass *_MAKE_PASS_NAME_PASS(void)
 125 {
 126         return new _PASS_NAME_PASS();
 127 }
 128
 129 /* clean up user provided defines */
 130 #undef PASS_NAME
 131 #undef NO_GATE
 132 #undef NO_EXECUTE
 133
 134 #undef PROPERTIES_DESTROYED
 135 #undef PROPERTIES_PROVIDED
 136 #undef PROPERTIES_REQUIRED
 137 #undef TODO_FLAGS_FINISH
 138 #undef TODO_FLAGS_START
 139
 140 /* clean up generated defines */
 141 #undef _EXECUTE
 142 #undef __EXECUTE
 143 #undef _GATE
 144 #undef __GATE
 145 #undef _GCC_PLUGIN_CONCAT2
 146 #undef _GCC_PLUGIN_CONCAT3
 147 #undef _GCC_PLUGIN_STRINGIFY
 148 #undef __GCC_PLUGIN_STRINGIFY
 149 #undef _HAS_EXECUTE
 150 #undef _HAS_GATE
 151 #undef _MAKE_PASS_NAME_PASS
 152 #undef __MAKE_PASS_NAME_PASS
 153 #undef _PASS_NAME_NAME
 154 #undef _PASS_NAME_PASS
 155 #undef __PASS_NAME_PASS
 156 #undef _PASS_NAME_PASS_DATA
 157 #undef __PASS_NAME_PASS_DATA
 158
 159 #endif /* PASS_NAME */