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/* Header file for gimple decl, type and expressions.
Copyright (C) 2013-2017 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_GIMPLE_EXPR_H
#define GCC_GIMPLE_EXPR_H
extern bool useless_type_conversion_p (tree, tree);
extern void gimple_set_body (tree, gimple_seq);
extern gimple_seq gimple_body (tree);
extern bool gimple_has_body_p (tree);
extern const char *gimple_decl_printable_name (tree, int);
extern tree copy_var_decl (tree, tree, tree);
extern tree create_tmp_var_name (const char *);
extern tree create_tmp_var_raw (tree, const char * = NULL);
extern tree create_tmp_var (tree, const char * = NULL);
extern tree create_tmp_reg (tree, const char * = NULL);
extern tree create_tmp_reg_fn (struct function *, tree, const char *);
extern void extract_ops_from_tree (tree, enum tree_code *, tree *, tree *,
tree *);
extern void gimple_cond_get_ops_from_tree (tree, enum tree_code *, tree *,
tree *);
extern bool is_gimple_lvalue (tree);
extern bool is_gimple_condexpr (tree);
extern bool is_gimple_address (const_tree);
extern bool is_gimple_invariant_address (const_tree);
extern bool is_gimple_ip_invariant_address (const_tree);
extern bool is_gimple_min_invariant (const_tree);
extern bool is_gimple_ip_invariant (const_tree);
extern bool is_gimple_reg (tree);
extern bool is_gimple_val (tree);
extern bool is_gimple_asm_val (tree);
extern bool is_gimple_min_lval (tree);
extern bool is_gimple_call_addr (tree);
extern bool is_gimple_mem_ref_addr (tree);
extern void flush_mark_addressable_queue (void);
extern void mark_addressable (tree);
extern bool is_gimple_reg_rhs (tree);
/* Return true if a conversion from either type of TYPE1 and TYPE2
to the other is not required. Otherwise return false. */
static inline bool
types_compatible_p (tree type1, tree type2)
{
return (type1 == type2
|| (useless_type_conversion_p (type1, type2)
&& useless_type_conversion_p (type2, type1)));
}
/* Return true if TYPE is a suitable type for a scalar register variable. */
static inline bool
is_gimple_reg_type (tree type)
{
return !AGGREGATE_TYPE_P (type);
}
/* Return true if T is a variable. */
static inline bool
is_gimple_variable (tree t)
{
return (TREE_CODE (t) == VAR_DECL
|| TREE_CODE (t) == PARM_DECL
|| TREE_CODE (t) == RESULT_DECL
|| TREE_CODE (t) == SSA_NAME);
}
/* Return true if T is a GIMPLE identifier (something with an address). */
static inline bool
is_gimple_id (tree t)
{
return (is_gimple_variable (t)
|| TREE_CODE (t) == FUNCTION_DECL
|| TREE_CODE (t) == LABEL_DECL
|| TREE_CODE (t) == CONST_DECL
/* Allow string constants, since they are addressable. */
|| TREE_CODE (t) == STRING_CST);
}
/* Return true if OP, an SSA name or a DECL is a virtual operand. */
static inline bool
virtual_operand_p (tree op)
{
if (TREE_CODE (op) == SSA_NAME)
return SSA_NAME_IS_VIRTUAL_OPERAND (op);
if (TREE_CODE (op) == VAR_DECL)
return VAR_DECL_IS_VIRTUAL_OPERAND (op);
return false;
}
/* Return true if T is something whose address can be taken. */
static inline bool
is_gimple_addressable (tree t)
{
return (is_gimple_id (t) || handled_component_p (t)
|| TREE_CODE (t) == MEM_REF);
}
/* Return true if T is a valid gimple constant. */
static inline bool
is_gimple_constant (const_tree t)
{
switch (TREE_CODE (t))
{
case INTEGER_CST:
case REAL_CST:
case FIXED_CST:
case COMPLEX_CST:
case VECTOR_CST:
case STRING_CST:
return true;
default:
return false;
}
}
/* A wrapper around extract_ops_from_tree with 3 ops, for callers which
expect to see only a maximum of two operands. */
static inline void
extract_ops_from_tree (tree expr, enum tree_code *code, tree *op0,
tree *op1)
{
tree op2;
extract_ops_from_tree (expr, code, op0, op1, &op2);
gcc_assert (op2 == NULL_TREE);
}
/* Given a valid GIMPLE_CALL function address return the FUNCTION_DECL
associated with the callee if known. Otherwise return NULL_TREE. */
static inline tree
gimple_call_addr_fndecl (const_tree fn)
{
if (fn && TREE_CODE (fn) == ADDR_EXPR)
{
tree fndecl = TREE_OPERAND (fn, 0);
if (TREE_CODE (fndecl) == MEM_REF
&& TREE_CODE (TREE_OPERAND (fndecl, 0)) == ADDR_EXPR
&& integer_zerop (TREE_OPERAND (fndecl, 1)))
fndecl = TREE_OPERAND (TREE_OPERAND (fndecl, 0), 0);
if (TREE_CODE (fndecl) == FUNCTION_DECL)
return fndecl;
}
return NULL_TREE;
}
#endif /* GCC_GIMPLE_EXPR_H */
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