void
set_value_handle (tree e, tree v)
{
if (TREE_CODE (e) == SSA_NAME)
SSA_NAME_VALUE (e) = v;
else if (EXPR_P (e) || DECL_P (e) || TREE_CODE (e) == TREE_LIST
|| GIMPLE_STMT_P (e)
|| TREE_CODE (e) == CONSTRUCTOR)
get_tree_common_ann (e)->value_handle = v;
else
/* Do nothing. Constants are their own value handles. */
gcc_assert (is_gimple_min_invariant (e));
}
tree
make_ssa_name (tree var, tree stmt)
{
tree t;
use_operand_p imm;
gcc_assert (DECL_P (var)
|| TREE_CODE (var) == INDIRECT_REF);
gcc_assert (!stmt
|| EXPR_P (stmt) || GIMPLE_STMT_P (stmt)
|| TREE_CODE (stmt) == PHI_NODE);
/* If our free list has an element, then use it. */
if (FREE_SSANAMES (cfun))
{
t = FREE_SSANAMES (cfun);
FREE_SSANAMES (cfun) = TREE_CHAIN (FREE_SSANAMES (cfun));
#ifdef GATHER_STATISTICS
ssa_name_nodes_reused++;
#endif
/* The node was cleared out when we put it on the free list, so
there is no need to do so again here. */
gcc_assert (ssa_name (SSA_NAME_VERSION (t)) == NULL);
VEC_replace (tree, SSANAMES (cfun), SSA_NAME_VERSION (t), t);
}
else
{
t = make_node (SSA_NAME);
SSA_NAME_VERSION (t) = num_ssa_names;
VEC_safe_push (tree, gc, SSANAMES (cfun), t);
#ifdef GATHER_STATISTICS
ssa_name_nodes_created++;
#endif
}
TREE_TYPE (t) = TREE_TYPE (var);
SSA_NAME_VAR (t) = var;
SSA_NAME_DEF_STMT (t) = stmt;
SSA_NAME_PTR_INFO (t) = NULL;
SSA_NAME_IN_FREE_LIST (t) = 0;
SSA_NAME_IS_DEFAULT_DEF (t) = 0;
imm = &(SSA_NAME_IMM_USE_NODE (t));
imm->use = NULL;
imm->prev = imm;
imm->next = imm;
imm->stmt = t;
return t;
}