1 /* SSA operand management for trees. 2 Copyright (C) 2003-2018 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_TREE_SSA_OPERANDS_H 21 #define GCC_TREE_SSA_OPERANDS_H 22 23 /* Interface to SSA operands. */ 24 25 26 /* This represents a pointer to a DEF operand. */ 27 typedef tree *def_operand_p; 28 29 /* This represents a pointer to a USE operand. */ 30 typedef ssa_use_operand_t *use_operand_p; 31 32 /* NULL operand types. */ 33 #define NULL_USE_OPERAND_P ((use_operand_p)NULL) 34 #define NULL_DEF_OPERAND_P ((def_operand_p)NULL) 35 36 /* This represents the USE operands of a stmt. */ 37 struct use_optype_d 38 { 39 struct use_optype_d *next; 40 struct ssa_use_operand_t use_ptr; 41 }; 42 typedef struct use_optype_d *use_optype_p; 43 44 /* This structure represents a variable sized buffer which is allocated by the 45 operand memory manager. Operands are suballocated out of this block. The 46 MEM array varies in size. */ 47 48 struct GTY((chain_next("%h.next"))) ssa_operand_memory_d { 49 struct ssa_operand_memory_d *next; 50 char mem[1]; 51 }; 52 53 /* Per-function operand caches. */ 54 struct GTY(()) ssa_operands { 55 struct ssa_operand_memory_d *operand_memory; 56 unsigned operand_memory_index; 57 /* Current size of the operand memory buffer. */ 58 unsigned int ssa_operand_mem_size; 59 60 bool ops_active; 61 62 struct use_optype_d * GTY ((skip (""))) free_uses; 63 }; 64 65 #define USE_FROM_PTR(PTR) get_use_from_ptr (PTR) 66 #define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR) 67 #define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V) 68 #define SET_DEF(DEF, V) ((*(DEF)) = (V)) 69 70 #define USE_STMT(USE) (USE)->loc.stmt 71 72 #define USE_OP_PTR(OP) (&((OP)->use_ptr)) 73 #define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP))) 74 75 #define PHI_RESULT_PTR(PHI) gimple_phi_result_ptr (PHI) 76 #define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI)) 77 #define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V)) 78 /* 79 #define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I))) 80 */ 81 #define PHI_ARG_DEF_PTR(PHI, I) gimple_phi_arg_imm_use_ptr ((PHI), (I)) 82 #define PHI_ARG_DEF(PHI, I) gimple_phi_arg_def ((PHI), (I)) 83 #define SET_PHI_ARG_DEF(PHI, I, V) \ 84 SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V)) 85 #define PHI_ARG_DEF_FROM_EDGE(PHI, E) \ 86 PHI_ARG_DEF ((PHI), (E)->dest_idx) 87 #define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \ 88 PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx) 89 #define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE) 90 91 92 extern bool ssa_operands_active (struct function *); 93 extern void init_ssa_operands (struct function *fn); 94 extern void fini_ssa_operands (struct function *); 95 extern bool verify_ssa_operands (struct function *, gimple *stmt); 96 extern void free_stmt_operands (struct function *, gimple *); 97 extern void update_stmt_operands (struct function *, gimple *); 98 extern void swap_ssa_operands (gimple *, tree *, tree *); 99 extern bool verify_imm_links (FILE *f, tree var); 100 101 extern void dump_immediate_uses_for (FILE *file, tree var); 102 extern void dump_immediate_uses (FILE *file); 103 extern void debug_immediate_uses (void); 104 extern void debug_immediate_uses_for (tree var); 105 106 extern void unlink_stmt_vdef (gimple *); 107 108 /* Return the tree pointed-to by USE. */ 109 static inline tree 110 get_use_from_ptr (use_operand_p use) 111 { 112 return *(use->use); 113 } 114 115 /* Return the tree pointed-to by DEF. */ 116 static inline tree 117 get_def_from_ptr (def_operand_p def) 118 { 119 return *def; 120 } 121 122 #endif /* GCC_TREE_SSA_OPERANDS_H */ 123