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