1 /* Internal functions. 2 Copyright (C) 2011-2022 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 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_INTERNAL_FN_H 21 #define GCC_INTERNAL_FN_H 22 23 /* INTEGER_CST values for IFN_UNIQUE function arg-0. 24 25 UNSPEC: Undifferentiated UNIQUE. 26 27 FORK and JOIN mark the points at which OpenACC partitioned 28 execution is entered or exited. 29 DEP_VAR = UNIQUE ({FORK,JOIN}, DEP_VAR, AXIS) 30 31 HEAD_MARK and TAIL_MARK are used to demark the sequence entering 32 or leaving partitioned execution. 33 DEP_VAR = UNIQUE ({HEAD,TAIL}_MARK, REMAINING_MARKS, ...PRIMARY_FLAGS) 34 35 The PRIMARY_FLAGS only occur on the first HEAD_MARK of a sequence. 36 37 PRIVATE captures variables to be made private at the surrounding parallelism 38 level. */ 39 #define IFN_UNIQUE_CODES \ 40 DEF(UNSPEC), \ 41 DEF(OACC_FORK), DEF(OACC_JOIN), \ 42 DEF(OACC_HEAD_MARK), DEF(OACC_TAIL_MARK), \ 43 DEF(OACC_PRIVATE) 44 45 enum ifn_unique_kind { 46 #define DEF(X) IFN_UNIQUE_##X 47 IFN_UNIQUE_CODES 48 #undef DEF 49 }; 50 51 /* INTEGER_CST values for IFN_GOACC_LOOP arg-0. Allows the precise 52 stepping of the compute geometry over the loop iterations to be 53 deferred until it is known which compiler is generating the code. 54 The action is encoded in a constant first argument. 55 56 CHUNK_MAX = LOOP (CODE_CHUNKS, DIR, RANGE, STEP, CHUNK_SIZE, MASK) 57 STEP = LOOP (CODE_STEP, DIR, RANGE, STEP, CHUNK_SIZE, MASK) 58 OFFSET = LOOP (CODE_OFFSET, DIR, RANGE, STEP, CHUNK_SIZE, MASK, CHUNK_NO) 59 BOUND = LOOP (CODE_BOUND, DIR, RANGE, STEP, CHUNK_SIZE, MASK, OFFSET) 60 61 DIR - +1 for up loop, -1 for down loop 62 RANGE - Range of loop (END - BASE) 63 STEP - iteration step size 64 CHUNKING - size of chunking, (constant zero for no chunking) 65 CHUNK_NO - chunk number 66 MASK - partitioning mask. */ 67 68 #define IFN_GOACC_LOOP_CODES \ 69 DEF(CHUNKS), DEF(STEP), DEF(OFFSET), DEF(BOUND) 70 enum ifn_goacc_loop_kind { 71 #define DEF(X) IFN_GOACC_LOOP_##X 72 IFN_GOACC_LOOP_CODES 73 #undef DEF 74 }; 75 76 /* The GOACC_REDUCTION function defines a generic interface to support 77 gang, worker and vector reductions. All calls are of the following 78 form: 79 80 V = REDUCTION (CODE, REF_TO_RES, LOCAL_VAR, LEVEL, OP, OFFSET) 81 82 REF_TO_RES - is a reference to the original reduction varl, may be NULL 83 LOCAL_VAR is the intermediate reduction variable 84 LEVEL corresponds to the GOMP_DIM of the reduction 85 OP is the tree code of the reduction operation 86 OFFSET may be used as an offset into a reduction array for the 87 reductions occuring at this level. 88 In general the return value is LOCAL_VAR, which creates a data 89 dependency between calls operating on the same reduction. */ 90 91 #define IFN_GOACC_REDUCTION_CODES \ 92 DEF(SETUP), DEF(INIT), DEF(FINI), DEF(TEARDOWN) 93 enum ifn_goacc_reduction_kind { 94 #define DEF(X) IFN_GOACC_REDUCTION_##X 95 IFN_GOACC_REDUCTION_CODES 96 #undef DEF 97 }; 98 99 /* Initialize internal function tables. */ 100 101 extern void init_internal_fns (); 102 103 /* Return the name of internal function FN. The name is only meaningful 104 for dumps; it has no linkage. */ 105 106 extern const char *const internal_fn_name_array[]; 107 108 static inline const char * 109 internal_fn_name (enum internal_fn fn) 110 { 111 return internal_fn_name_array[(int) fn]; 112 } 113 114 extern internal_fn lookup_internal_fn (const char *); 115 116 /* Return the ECF_* flags for function FN. */ 117 118 extern const int internal_fn_flags_array[]; 119 120 static inline int 121 internal_fn_flags (enum internal_fn fn) 122 { 123 return internal_fn_flags_array[(int) fn]; 124 } 125 126 /* Return fnspec for function FN. */ 127 128 extern GTY(()) const_tree internal_fn_fnspec_array[IFN_LAST + 1]; 129 130 static inline const_tree 131 internal_fn_fnspec (enum internal_fn fn) 132 { 133 return internal_fn_fnspec_array[(int) fn]; 134 } 135 136 /* Describes an internal function that maps directly to an optab. */ 137 struct direct_internal_fn_info 138 { 139 /* optabs can be parameterized by one or two modes. These fields describe 140 how to select those modes from the types of the return value and 141 arguments. A value of -1 says that the mode is determined by the 142 return type while a value N >= 0 says that the mode is determined by 143 the type of argument N. A value of -2 says that this internal 144 function isn't directly mapped to an optab. */ 145 signed int type0 : 8; 146 signed int type1 : 8; 147 /* True if the function is pointwise, so that it can be vectorized by 148 converting the return type and all argument types to vectors of the 149 same number of elements. E.g. we can vectorize an IFN_SQRT on 150 floats as an IFN_SQRT on vectors of N floats. 151 152 This only needs 1 bit, but occupies the full 16 to ensure a nice 153 layout. */ 154 unsigned int vectorizable : 16; 155 }; 156 157 extern const direct_internal_fn_info direct_internal_fn_array[IFN_LAST + 1]; 158 159 /* Return true if FN is mapped directly to an optab. */ 160 161 inline bool 162 direct_internal_fn_p (internal_fn fn) 163 { 164 return direct_internal_fn_array[fn].type0 >= -1; 165 } 166 167 /* Return true if FN is a direct internal function that can be vectorized by 168 converting the return type and all argument types to vectors of the same 169 number of elements. E.g. we can vectorize an IFN_SQRT on floats as an 170 IFN_SQRT on vectors of N floats. */ 171 172 inline bool 173 vectorizable_internal_fn_p (internal_fn fn) 174 { 175 return direct_internal_fn_array[fn].vectorizable; 176 } 177 178 /* Return optab information about internal function FN. Only meaningful 179 if direct_internal_fn_p (FN). */ 180 181 inline const direct_internal_fn_info & 182 direct_internal_fn (internal_fn fn) 183 { 184 gcc_checking_assert (direct_internal_fn_p (fn)); 185 return direct_internal_fn_array[fn]; 186 } 187 188 extern tree_pair direct_internal_fn_types (internal_fn, tree, tree *); 189 extern tree_pair direct_internal_fn_types (internal_fn, gcall *); 190 extern bool direct_internal_fn_supported_p (internal_fn, tree_pair, 191 optimization_type); 192 extern bool direct_internal_fn_supported_p (internal_fn, tree, 193 optimization_type); 194 extern bool direct_internal_fn_supported_p (gcall *, optimization_type); 195 196 /* Return true if FN is supported for types TYPE0 and TYPE1 when the 197 optimization type is OPT_TYPE. The types are those associated with 198 the "type0" and "type1" fields of FN's direct_internal_fn_info 199 structure. */ 200 201 inline bool 202 direct_internal_fn_supported_p (internal_fn fn, tree type0, tree type1, 203 optimization_type opt_type) 204 { 205 return direct_internal_fn_supported_p (fn, tree_pair (type0, type1), 206 opt_type); 207 } 208 209 extern bool commutative_binary_fn_p (internal_fn); 210 extern bool commutative_ternary_fn_p (internal_fn); 211 extern int first_commutative_argument (internal_fn); 212 extern bool associative_binary_fn_p (internal_fn); 213 214 extern bool set_edom_supported_p (void); 215 216 extern internal_fn get_conditional_internal_fn (tree_code); 217 extern internal_fn get_conditional_internal_fn (internal_fn); 218 extern tree_code conditional_internal_fn_code (internal_fn); 219 extern internal_fn get_unconditional_internal_fn (internal_fn); 220 extern bool can_interpret_as_conditional_op_p (gimple *, tree *, 221 tree_code *, tree (&)[3], 222 tree *); 223 224 extern bool internal_load_fn_p (internal_fn); 225 extern bool internal_store_fn_p (internal_fn); 226 extern bool internal_gather_scatter_fn_p (internal_fn); 227 extern int internal_fn_mask_index (internal_fn); 228 extern int internal_fn_stored_value_index (internal_fn); 229 extern bool internal_gather_scatter_fn_supported_p (internal_fn, tree, 230 tree, tree, int); 231 extern bool internal_check_ptrs_fn_supported_p (internal_fn, tree, 232 poly_uint64, unsigned int); 233 #define VECT_PARTIAL_BIAS_UNSUPPORTED 127 234 235 extern signed char internal_len_load_store_bias (internal_fn ifn, 236 machine_mode); 237 238 extern void expand_addsub_overflow (location_t, tree_code, tree, tree, tree, 239 bool, bool, bool, bool, tree *); 240 extern void expand_internal_call (gcall *); 241 extern void expand_internal_call (internal_fn, gcall *); 242 extern void expand_PHI (internal_fn, gcall *); 243 extern void expand_SHUFFLEVECTOR (internal_fn, gcall *); 244 extern void expand_SPACESHIP (internal_fn, gcall *); 245 246 extern bool vectorized_internal_fn_supported_p (internal_fn, tree); 247 248 enum { 249 ATOMIC_OP_FETCH_CMP_0_EQ = 0, 250 ATOMIC_OP_FETCH_CMP_0_NE = 1, 251 ATOMIC_OP_FETCH_CMP_0_LT = 2, 252 ATOMIC_OP_FETCH_CMP_0_LE = 3, 253 ATOMIC_OP_FETCH_CMP_0_GT = 4, 254 ATOMIC_OP_FETCH_CMP_0_GE = 5 255 }; 256 257 #endif 258