> You'll have to post your work so people can see. Now the
> best the
> experts here can do is guess what you're holding behind
> your back :-)
>
> Ciao!
> Steven
>
I completely agree with you. This is my pass:
static unsigned int
execute_mypass (void)
{
basic_block bb;
gimple stmt, def_stmt;
gimple_stmt_iterator gsi;
struct cgraph_node *node;
unsigned int rhs_code_class;
if (flag_mypass)
{
for (node = cgraph_nodes; node; node = node->next)
{
if (node->analyzed && cgraph_is_master_clone (node))
{
push_cfun (DECL_STRUCT_FUNCTION (node->decl));
FOR_EACH_BB (bb)
{
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next
(&gsi))
{
stmt = gsi_stmt (gsi);
if (gimple_code (stmt) == GIMPLE_ASSIGN)
{
/* Check if the assignment is acctually
a function call. For example:
D.1 = func (args...);
a.9 = D.1
a = a.9
The last one is seen as a GIMPLE_ASSIGN stmt
but I want to check if it refers to a function call */
rhs_code_class = get_gimple_rhs_class
(gimple_assign_rhs_code (stmt));
if ((rhs_code_class == GIMPLE_UNARY_RHS) ||
(rhs_code_class == GIMPLE_SINGLE_RHS))
{
if (is_temporary_var (gimple_assign_rhs1 (stmt)))
// e.g.: a.1, D.1234...
{
def_stmt = SSA_NAME_DEF_STMT
(gimple_assign_rhs1 (stmt));
fprintf (dump_file, "gimple_code: %d\n",
gimple_code (def_stmt)); // Here I get segmentation fault...
}
}
}
}
}
pop_cfun ();
}
}
}
return 0;
}
The problem is that "SSA_NAME_DEF_STMT (gimple_assign_rhs1 (stmt))" does not
return a gimple stmt. I think that's because, when I make a dump of the stmts
with the code above, this one has not the SSA-form. But if only use the
FOR_EACH (bb), without "for (node = cgraph_nodes; ...", the SS-form is OK and
SSA_NAME_DEF_STMT works well.
How can I do?
Thank you!
