blob: eebebaa2390f46125e848ed926d8587dbb593e81 (
plain)
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
55
56
|
/* { dg-do run } */
/* { dg-skip-if "doubles are floats" { "avr-*-*" } { "*" } { "" } } */
/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details" { target *-*-netware* } } */
/* { dg-final { scan-tree-dump "cdce2.c:17: note: function call is shrink-wrapped into error conditions\." "cdce" } }*/
/* { dg-final { cleanup-tree-dump "cdce" } } */
#include <stdlib.h>
#include <math.h>
#include <errno.h>
int total_err_count = 0;
double foo_opt (double y) __attribute__((noinline));
double foo_opt (double y)
{
double yy = 0;
errno = 0;
yy = log (y);
return 0;
}
double foo (double y) __attribute__((noinline));
double foo (double y)
{
double yy = 0;
errno = 0;
yy = log (y);
return yy;
}
int test (double (*fp) (double y))
{
int i,x;
for (i = -100; i < 100; i++)
{
fp (i);
if (errno)
total_err_count ++;
}
return total_err_count;
}
int main ()
{
int en1, en2;
double yy;
total_err_count = 0;
en1 = test (foo_opt);
total_err_count = 0;
en2 = test (foo);
if (en1 != en2)
abort();
return 0;
}
|
