1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-dce3" } */
struct rtx_def;
typedef struct rtx_def *rtx;
union tree_node;
typedef union tree_node *tree;
typedef struct mem_attrs
{
int foo;
} mem_attrs;
union rtunion_def
{
mem_attrs *rtmem;
};
typedef union rtunion_def rtunion;
struct rtx_def
{
rtunion fld[1];
};
struct tree_decl
{
rtx rtl;
};
union tree_node
{
struct tree_decl decl;
};
int make_decl_rtl (tree, int);
void *
get_alias_set (t)
tree t;
{
long set;
if (t->decl.rtl)
return (t->decl.rtl->fld[1].rtmem
? 0
: (((t->decl.rtl ? t->decl.rtl: (make_decl_rtl (t, 0), t->decl.rtl)))->fld[1]).rtmem);
return (void*)-1;
}
/* There should be precisely one load of ->decl.rtl. If there is
more than, then the dominator optimizations failed. */
/* { dg-final { scan-tree-dump-times "->decl\\.rtl" 1 "dce3"} } */
/* There should be no loads of .rtmem since the complex return statement
is just "return 0". */
/* { dg-final { scan-tree-dump-times ".rtmem" 0 "dce3"} } */
/* There should be one IF statement (the complex return statement should
collapse down to a simple return 0 without any conditionals). */
/* { dg-final { scan-tree-dump-times "if " 1 "dce3"} } */
|
