1/* SSA operand management for trees. 2 Copyright (C) 2003-2015 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along 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. */ 27typedef tree *def_operand_p; 28 29/* This represents a pointer to a USE operand. */ 30typedef 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. */ 37struct use_optype_d 38{ 39 struct use_optype_d *next; 40 struct ssa_use_operand_t use_ptr; 41}; 42typedef 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 48struct 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. */ 54struct 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 92extern bool ssa_operands_active (struct function *); 93extern void init_ssa_operands (struct function *fn); 94extern void fini_ssa_operands (struct function *); 95extern bool verify_ssa_operands (struct function *, gimple stmt); 96extern void free_stmt_operands (struct function *, gimple); 97extern void update_stmt_operands (struct function *, gimple); 98extern void swap_ssa_operands (gimple, tree *, tree *); 99extern bool verify_imm_links (FILE *f, tree var); 100 101extern void dump_immediate_uses_for (FILE *file, tree var); 102extern void dump_immediate_uses (FILE *file); 103extern void debug_immediate_uses (void); 104extern void debug_immediate_uses_for (tree var); 105 106extern void unlink_stmt_vdef (gimple); 107 108/* Return the tree pointed-to by USE. */ 109static inline tree 110get_use_from_ptr (use_operand_p use) 111{ 112 return *(use->use); 113} 114 115/* Return the tree pointed-to by DEF. */ 116static inline tree 117get_def_from_ptr (def_operand_p def) 118{ 119 return *def; 120} 121 122#endif /* GCC_TREE_SSA_OPERANDS_H */ 123