adding diverge regression test

tests/regression/diverge/kernel.c

@@ -0,0 +1,50 @@
+#include <stdint.h>
+#include <vx_intrinsics.h>
+#include <vx_spawn.h>
+#include "common.h"
+
+// Parallel Selection sort
+
+void kernel_body(int task_id, void* arg) {
+	struct kernel_arg_t* _arg = (struct kernel_arg_t*)(arg);
+	int32_t* src_ptr = (int32_t*)_arg->src_ptr;
+	int32_t* dst_ptr = (int32_t*)_arg->dst_ptr;
+
+	int value = src_ptr[task_id];
+
+	// none taken
+	__if (task_id >= 0x7fffffff) {
+		value = 0;
+	}__else {
+		value += 2;
+	}__endif	
+	
+	// diverge
+	__if (task_id > 1) {
+		__if (task_id > 2) {
+			value += 6;
+		}__else {
+			value += 5;
+		}__endif
+	}__else {
+		__if (task_id > 0) {
+			value += 4;
+		}__else {
+			value += 3;
+		}__endif
+	}__endif
+
+	// all taken
+	__if (task_id >= 0) {
+		value += 7;
+	}__else {
+		value = 0;
+	}__endif
+
+	dst_ptr[task_id] = value;
+}
+
+void main() {
+	struct kernel_arg_t* arg = (struct kernel_arg_t*)KERNEL_ARG_DEV_MEM_ADDR;
+	vx_spawn_tasks(arg->num_points, kernel_body, arg);
+}