gcc/coretypes.h

   1 /* GCC core type declarations.
   2    Copyright (C) 2002-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 /* Provide forward declarations of core types which are referred to by
  26    most of the compiler.  This allows header files to use these types
  27    (e.g. in function prototypes) without concern for whether the full
  28    definitions are visible.  Some other declarations that need to be
  29    universally visible are here, too.
  30
  31    In the context of tconfig.h, most of these have special definitions
  32    which prevent them from being used except in further type
  33    declarations.  This is a kludge; the right thing is to avoid
  34    including the "tm.h" header set in the context of tconfig.h, but
  35    we're not there yet.  */
  36
  37 #ifndef GCC_CORETYPES_H
  38 #define GCC_CORETYPES_H
  39
  40 #ifndef GTY
  41 #define GTY(x)  /* nothing - marker for gengtype */
  42 #endif
  43
  44 #ifndef USED_FOR_TARGET
  45
  46 typedef int64_t gcov_type;
  47 typedef uint64_t gcov_type_unsigned;
  48
  49 struct bitmap_head;
  50 typedef struct bitmap_head *bitmap;
  51 typedef const struct bitmap_head *const_bitmap;
  52 struct simple_bitmap_def;
  53 typedef struct simple_bitmap_def *sbitmap;
  54 typedef const struct simple_bitmap_def *const_sbitmap;
  55 struct rtx_def;
  56 typedef struct rtx_def *rtx;
  57 typedef const struct rtx_def *const_rtx;
  58
  59 /* Subclasses of rtx_def, using indentation to show the class
  60    hierarchy, along with the relevant invariant.
  61    Where possible, keep this list in the same order as in rtl.def.  */
  62 class rtx_def;
  63   class rtx_expr_list;           /* GET_CODE (X) == EXPR_LIST */
  64   class rtx_insn_list;           /* GET_CODE (X) == INSN_LIST */
  65   class rtx_sequence;            /* GET_CODE (X) == SEQUENCE */
  66   class rtx_insn;
  67     class rtx_debug_insn;      /* DEBUG_INSN_P (X) */
  68     class rtx_nonjump_insn;    /* NONJUMP_INSN_P (X) */
  69     class rtx_jump_insn;       /* JUMP_P (X) */
  70     class rtx_call_insn;       /* CALL_P (X) */
  71     class rtx_jump_table_data; /* JUMP_TABLE_DATA_P (X) */
  72     class rtx_barrier;         /* BARRIER_P (X) */
  73     class rtx_code_label;      /* LABEL_P (X) */
  74     class rtx_note;            /* NOTE_P (X) */
  75
  76 struct rtvec_def;
  77 typedef struct rtvec_def *rtvec;
  78 typedef const struct rtvec_def *const_rtvec;
  79 struct hwivec_def;
  80 typedef struct hwivec_def *hwivec;
  81 typedef const struct hwivec_def *const_hwivec;
  82 union tree_node;
  83 typedef union tree_node *tree;
  84 typedef const union tree_node *const_tree;
  85 typedef struct gimple_statement_base *gimple;
  86 typedef const struct gimple_statement_base *const_gimple;
  87 typedef gimple gimple_seq;
  88 struct gimple_stmt_iterator;
  89
  90 /* Forward decls for leaf gimple subclasses (for individual gimple codes).
  91    Keep this in the same order as the corresponding codes in gimple.def.  */
  92
  93 struct gcond;
  94 struct gdebug;
  95 struct ggoto;
  96 struct glabel;
  97 struct gswitch;
  98 struct gassign;
  99 struct gasm;
 100 struct gcall;
 101 struct gtransaction;
 102 struct greturn;
 103 struct gbind;
 104 struct gcatch;
 105 struct geh_filter;
 106 struct geh_mnt;
 107 struct geh_else;
 108 struct gresx;
 109 struct geh_dispatch;
 110 struct gphi;
 111 struct gtry;
 112 struct gomp_atomic_load;
 113 struct gomp_atomic_store;
 114 struct gomp_continue;
 115 struct gomp_critical;
 116 struct gomp_for;
 117 struct gomp_parallel;
 118 struct gomp_task;
 119 struct gomp_sections;
 120 struct gomp_single;
 121 struct gomp_target;
 122 struct gomp_teams;
 123
 124 union section;
 125 typedef union section section;
 126 struct gcc_options;
 127 struct cl_target_option;
 128 struct cl_optimization;
 129 struct cl_option;
 130 struct cl_decoded_option;
 131 struct cl_option_handlers;
 132 struct diagnostic_context;
 133 struct pretty_printer;
 134
 135 /* Address space number for named address space support.  */
 136 typedef unsigned char addr_space_t;
 137
 138 /* The value of addr_space_t that represents the generic address space.  */
 139 #define ADDR_SPACE_GENERIC 0
 140 #define ADDR_SPACE_GENERIC_P(AS) ((AS) == ADDR_SPACE_GENERIC)
 141
 142 /* The major intermediate representations of GCC.  */
 143 enum ir_type {
 144   IR_GIMPLE,
 145   IR_RTL_CFGRTL,
 146   IR_RTL_CFGLAYOUT
 147 };
 148
 149 /* Provide forward struct declaration so that we don't have to include
 150    all of cpplib.h whenever a random prototype includes a pointer.
 151    Note that the cpp_reader and cpp_token typedefs remain part of
 152    cpplib.h.  */
 153
 154 struct cpp_reader;
 155 struct cpp_token;
 156
 157 /* The thread-local storage model associated with a given VAR_DECL
 158    or SYMBOL_REF.  This isn't used much, but both trees and RTL refer
 159    to it, so it's here.  */
 160 enum tls_model {
 161   TLS_MODEL_NONE,
 162   TLS_MODEL_EMULATED,
 163   TLS_MODEL_REAL,
 164   TLS_MODEL_GLOBAL_DYNAMIC = TLS_MODEL_REAL,
 165   TLS_MODEL_LOCAL_DYNAMIC,
 166   TLS_MODEL_INITIAL_EXEC,
 167   TLS_MODEL_LOCAL_EXEC
 168 };
 169
 170 /* Types of ABI for an offload compiler.  */
 171 enum offload_abi {
 172   OFFLOAD_ABI_UNSET,
 173   OFFLOAD_ABI_LP64,
 174   OFFLOAD_ABI_ILP32
 175 };
 176
 177 /* Types of unwind/exception handling info that can be generated.  */
 178
 179 enum unwind_info_type
 180 {
 181   UI_NONE,
 182   UI_SJLJ,
 183   UI_DWARF2,
 184   UI_TARGET,
 185   UI_SEH
 186 };
 187
 188 /* Callgraph node profile representation.  */
 189 enum node_frequency {
 190   /* This function most likely won't be executed at all.
 191      (set only when profile feedback is available or via function attribute). */
 192   NODE_FREQUENCY_UNLIKELY_EXECUTED,
 193   /* For functions that are known to be executed once (i.e. constructors, destructors
 194      and main function.  */
 195   NODE_FREQUENCY_EXECUTED_ONCE,
 196   /* The default value.  */
 197   NODE_FREQUENCY_NORMAL,
 198   /* Optimize this function hard
 199      (set only when profile feedback is available or via function attribute). */
 200   NODE_FREQUENCY_HOT
 201 };
 202
 203 /* Possible initialization status of a variable.   When requested
 204    by the user, this information is tracked and recorded in the DWARF
 205    debug information, along with the variable's location.  */
 206 enum var_init_status
 207 {
 208   VAR_INIT_STATUS_UNKNOWN,
 209   VAR_INIT_STATUS_UNINITIALIZED,
 210   VAR_INIT_STATUS_INITIALIZED
 211 };
 212
 213
 214 struct edge_def;
 215 typedef struct edge_def *edge;
 216 typedef const struct edge_def *const_edge;
 217 struct basic_block_def;
 218 typedef struct basic_block_def *basic_block;
 219 typedef const struct basic_block_def *const_basic_block;
 220
 221 #define obstack_chunk_alloc     xmalloc
 222 #define obstack_chunk_free      free
 223 #define OBSTACK_CHUNK_SIZE      0
 224 #define gcc_obstack_init(OBSTACK)                               \
 225   obstack_specify_allocation ((OBSTACK), OBSTACK_CHUNK_SIZE, 0, \
 226                               obstack_chunk_alloc,              \
 227                               obstack_chunk_free)
 228
 229 /* enum reg_class is target specific, so it should not appear in
 230    target-independent code or interfaces, like the target hook declarations
 231    in target.h.  */
 232 typedef int reg_class_t;
 233
 234 class rtl_opt_pass;
 235
 236 namespace gcc {
 237   class context;
 238 }
 239
 240 #else
 241
 242 struct _dont_use_rtx_here_;
 243 struct _dont_use_rtvec_here_;
 244 struct _dont_use_rtx_insn_here_;
 245 union _dont_use_tree_here_;
 246 #define rtx struct _dont_use_rtx_here_ *
 247 #define const_rtx struct _dont_use_rtx_here_ *
 248 #define rtvec struct _dont_use_rtvec_here *
 249 #define const_rtvec struct _dont_use_rtvec_here *
 250 #define rtx_insn struct _dont_use_rtx_insn_here_
 251 #define tree union _dont_use_tree_here_ *
 252 #define const_tree union _dont_use_tree_here_ *
 253
 254 #endif
 255
 256 /* Classes of functions that compiler needs to check
 257    whether they are present at the runtime or not.  */
 258 enum function_class {
 259   function_c94,
 260   function_c99_misc,
 261   function_c99_math_complex,
 262   function_sincos,
 263   function_c11_misc
 264 };
 265
 266 /* Suppose that higher bits are target dependent. */
 267 #define MEMMODEL_MASK ((1<<16)-1)
 268
 269 /* Legacy sync operations set this upper flag in the memory model.  This allows
 270    targets that need to do something stronger for sync operations to
 271    differentiate with their target patterns and issue a more appropriate insn
 272    sequence.  See bugzilla 65697 for background.  */
 273 #define MEMMODEL_SYNC (1<<15)
 274
 275 /* Memory model without SYNC bit for targets/operations that do not care.  */
 276 #define MEMMODEL_BASE_MASK (MEMMODEL_SYNC-1)
 277
 278 /* Memory model types for the __atomic* builtins.
 279    This must match the order in libstdc++-v3/include/bits/atomic_base.h.  */
 280 enum memmodel
 281 {
 282   MEMMODEL_RELAXED = 0,
 283   MEMMODEL_CONSUME = 1,
 284   MEMMODEL_ACQUIRE = 2,
 285   MEMMODEL_RELEASE = 3,
 286   MEMMODEL_ACQ_REL = 4,
 287   MEMMODEL_SEQ_CST = 5,
 288   MEMMODEL_LAST = 6,
 289   MEMMODEL_SYNC_ACQUIRE = MEMMODEL_ACQUIRE | MEMMODEL_SYNC,
 290   MEMMODEL_SYNC_RELEASE = MEMMODEL_RELEASE | MEMMODEL_SYNC,
 291   MEMMODEL_SYNC_SEQ_CST = MEMMODEL_SEQ_CST | MEMMODEL_SYNC
 292 };
 293
 294 /* Support for user-provided GGC and PCH markers.  The first parameter
 295    is a pointer to a pointer, the second a cookie.  */
 296 typedef void (*gt_pointer_operator) (void *, void *);
 297
 298 #if !defined (HAVE_UCHAR)
 299 typedef unsigned char uchar;
 300 #endif
 301
 302 #endif /* coretypes.h */