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/* SSA operand management for trees.
Copyright (C) 2003-2013 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"), variable_size)) 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 */
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