| /* SSA operand management for trees. |
| Copyright (C) 2003-2017 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_TREE_SSA_OPERANDS_H |
| #define GCC_TREE_SSA_OPERANDS_H |
| |
| /* Interface to SSA operands. */ |
| |
| |
| /* This represents a pointer to a DEF operand. */ |
| typedef tree *def_operand_p; |
| |
| /* This represents a pointer to a USE operand. */ |
| typedef ssa_use_operand_t *use_operand_p; |
| |
| /* NULL operand types. */ |
| #define NULL_USE_OPERAND_P ((use_operand_p)NULL) |
| #define NULL_DEF_OPERAND_P ((def_operand_p)NULL) |
| |
| /* This represents the USE operands of a stmt. */ |
| struct use_optype_d |
| { |
| struct use_optype_d *next; |
| struct ssa_use_operand_t use_ptr; |
| }; |
| typedef struct use_optype_d *use_optype_p; |
| |
| /* This structure represents a variable sized buffer which is allocated by the |
| operand memory manager. Operands are suballocated out of this block. The |
| MEM array varies in size. */ |
| |
| struct GTY((chain_next("%h.next"))) ssa_operand_memory_d { |
| struct ssa_operand_memory_d *next; |
| char mem[1]; |
| }; |
| |
| /* Per-function operand caches. */ |
| struct GTY(()) ssa_operands { |
| struct ssa_operand_memory_d *operand_memory; |
| unsigned operand_memory_index; |
| /* Current size of the operand memory buffer. */ |
| unsigned int ssa_operand_mem_size; |
| |
| bool ops_active; |
| |
| struct use_optype_d * GTY ((skip (""))) free_uses; |
| }; |
| |
| #define USE_FROM_PTR(PTR) get_use_from_ptr (PTR) |
| #define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR) |
| #define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V) |
| #define SET_DEF(DEF, V) ((*(DEF)) = (V)) |
| |
| #define USE_STMT(USE) (USE)->loc.stmt |
| |
| #define USE_OP_PTR(OP) (&((OP)->use_ptr)) |
| #define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP))) |
| |
| #define PHI_RESULT_PTR(PHI) gimple_phi_result_ptr (PHI) |
| #define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI)) |
| #define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V)) |
| /* |
| #define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I))) |
| */ |
| #define PHI_ARG_DEF_PTR(PHI, I) gimple_phi_arg_imm_use_ptr ((PHI), (I)) |
| #define PHI_ARG_DEF(PHI, I) gimple_phi_arg_def ((PHI), (I)) |
| #define SET_PHI_ARG_DEF(PHI, I, V) \ |
| SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V)) |
| #define PHI_ARG_DEF_FROM_EDGE(PHI, E) \ |
| PHI_ARG_DEF ((PHI), (E)->dest_idx) |
| #define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \ |
| PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx) |
| #define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE) |
| |
| |
| extern bool ssa_operands_active (struct function *); |
| extern void init_ssa_operands (struct function *fn); |
| extern void fini_ssa_operands (struct function *); |
| extern bool verify_ssa_operands (struct function *, gimple *stmt); |
| extern void free_stmt_operands (struct function *, gimple *); |
| extern void update_stmt_operands (struct function *, gimple *); |
| extern void swap_ssa_operands (gimple *, tree *, tree *); |
| extern bool verify_imm_links (FILE *f, tree var); |
| |
| extern void dump_immediate_uses_for (FILE *file, tree var); |
| extern void dump_immediate_uses (FILE *file); |
| extern void debug_immediate_uses (void); |
| extern void debug_immediate_uses_for (tree var); |
| |
| extern void unlink_stmt_vdef (gimple *); |
| |
| /* Return the tree pointed-to by USE. */ |
| static inline tree |
| get_use_from_ptr (use_operand_p use) |
| { |
| return *(use->use); |
| } |
| |
| /* Return the tree pointed-to by DEF. */ |
| static inline tree |
| get_def_from_ptr (def_operand_p def) |
| { |
| return *def; |
| } |
| |
| #endif /* GCC_TREE_SSA_OPERANDS_H */ |