File: loop_count.cl

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intel-gpu-tools 2.2-2
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/* Must be same as MAGIC_LOOP_STOP in lib/intel_compute.c */
#define MAGIC_LOOP_STOP 0x12341234

__kernel void loop(volatile __global int *input,
		   __global int *output,
		   unsigned int count)
{
	int i = get_global_id(0);

	for (int c = 0; c < count; c++) {
		if (input[0] == MAGIC_LOOP_STOP)
			break;
		output[0] = output[0] + i;
	}
}