1 /* This code uses nvptx inline assembly guarded with acc_on_device, which is
2 not optimized away at -O0, and then confuses the target assembler.
3 { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
4
5 #include <stdio.h>
6
7 #define N (32*32*32+17)
main()8 int main ()
9 {
10 int ary[N];
11 int ix;
12 int exit = 0;
13 int ondev = 0;
14
15 for (ix = 0; ix < N;ix++)
16 ary[ix] = -1;
17
18 #pragma acc parallel num_gangs(32) copy(ary) copy(ondev)
19 {
20 #pragma acc loop gang (static:1)
21 for (unsigned ix = 0; ix < N; ix++)
22 {
23 if (__builtin_acc_on_device (5))
24 {
25 int g = 0, w = 0, v = 0;
26
27 __asm__ volatile ("mov.u32 %0,%%ctaid.x;" : "=r" (g));
28 __asm__ volatile ("mov.u32 %0,%%tid.y;" : "=r" (w));
29 __asm__ volatile ("mov.u32 %0,%%tid.x;" : "=r" (v));
30 ary[ix] = (g << 16) | (w << 8) | v;
31 ondev = 1;
32 }
33 else
34 ary[ix] = ix;
35 }
36 }
37
38 for (ix = 0; ix < N; ix++)
39 {
40 int expected = ix;
41 if(ondev)
42 {
43 int g = ix % 32;
44 int w = 0;
45 int v = 0;
46
47 expected = (g << 16) | (w << 8) | v;
48 }
49
50 if (ary[ix] != expected)
51 {
52 exit = 1;
53 printf ("ary[%d]=%x expected %x\n", ix, ary[ix], expected);
54 }
55 }
56
57 return exit;
58 }
59