mirror of git://gcc.gnu.org/git/gcc.git
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* This code uses nvptx inline assembly guarded with acc_on_device, which is
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not optimized away at -O0, and then confuses the target assembler.
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{ dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
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#include <stdio.h>
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#define N (32*32*32+17)
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int main ()
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{
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int ix;
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int ondev = 0;
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int t = 0, h = 0;
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#pragma acc parallel num_workers(32) vector_length(32) copy(ondev)
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{
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#pragma acc loop worker reduction(+:t)
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for (unsigned ix = 0; ix < N; ix++)
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{
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int val = ix;
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if (__builtin_acc_on_device (5))
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{
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int g = 0, w = 0, v = 0;
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__asm__ volatile ("mov.u32 %0,%%ctaid.x;" : "=r" (g));
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__asm__ volatile ("mov.u32 %0,%%tid.y;" : "=r" (w));
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__asm__ volatile ("mov.u32 %0,%%tid.x;" : "=r" (v));
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val = (g << 16) | (w << 8) | v;
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ondev = 1;
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}
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t += val;
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}
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}
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for (ix = 0; ix < N; ix++)
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{
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int val = ix;
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if(ondev)
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{
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int g = 0;
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int w = ix % 32;
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int v = 0;
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val = (g << 16) | (w << 8) | v;
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}
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h += val;
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}
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if (t != h)
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{
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printf ("t=%x expected %x\n", t, h);
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return 1;
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}
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return 0;
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}
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