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/* This code uses nvptx inline assembly guarded with acc_on_device, which is
not optimized away at -O0, and then confuses the target assembler.
{ dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
#include <stdio.h>
#define N (32*32*32+17)
int main ()
{
int ary[N];
int ix;
int exit = 0;
int ondev = 0;
for (ix = 0; ix < N;ix++)
ary[ix] = -1;
#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) copy(ary) copy(ondev)
{
#pragma acc loop gang worker vector
for (unsigned ix = 0; ix < N; ix++)
{
if (__builtin_acc_on_device (5))
{
int g = 0, w = 0, v = 0;
__asm__ volatile ("mov.u32 %0,%%ctaid.x;" : "=r" (g));
__asm__ volatile ("mov.u32 %0,%%tid.y;" : "=r" (w));
__asm__ volatile ("mov.u32 %0,%%tid.x;" : "=r" (v));
ary[ix] = (g << 16) | (w << 8) | v;
ondev = 1;
}
else
ary[ix] = ix;
}
}
for (ix = 0; ix < N; ix++)
{
int expected = ix;
if(ondev)
{
int chunk_size = (N + 32*32*32 - 1) / (32*32*32);
int g = ix / (chunk_size * 32 * 32);
int w = ix / 32 % 32;
int v = ix % 32;
expected = (g << 16) | (w << 8) | v;
}
if (ary[ix] != expected)
{
exit = 1;
printf ("ary[%d]=%x expected %x\n", ix, ary[ix], expected);
}
}
return exit;
}
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