#include <altivec.h>

printf("%st:", s);
for (i = 0 ; i <= 15; i++)
    printf("%3d ", vec_extract(_data, i));
printf("n");
}

void print_vec_long(char *s, vector signed long int _data){
int i;

printf("%st:", s);
for (i = 0 ; i <= 1; i++)
    printf("%ld ", vec_extract(_data, i));
printf("n");
}

int main(){
vector signed long int output;
signed char x, y;
vector signed char _data;
const vector signed char bits = {120, 112, 104, 96, 88, 80, 72, 64, 56, 48, 40, 32, 24, 16, 8, 0};


// Initialize the vector _data with the same values
_data = vec_splat_s8(-1);

print_vec_char("_data", _data);
print_vec_char("bits", bits);

output = vec_vbpermq(_data, bits);
print_vec_long("output", output);

y = vec_extract(output, 0);
x = vec_extract(output, 1);

printf("First Half  = %xn", y);
printf("Second Half = %xn", x);

}

# objdump -D test | grep print_vec_long  -A 10


 0000000000000924 <print_vec_long>:

 924:   02 00 4c 3c     addis   r2,r12,2
 928:   dc 75 42 38     addi    r2,r2,30172
 92c:   a6 02 08 7c     mflr    r0
 930:   10 00 01 f8     std     r0,16(r1)
 934:   f8 ff e1 fb     std     r31,-8(r1)
 938:   61 ff 21 f8     stdu    r1,-160(r1)
 93c:   78 0b 3f 7c     mr      r31,r1
 940:   78 00 7f f8     std     r3,120(r31)
 944:   56 12 02 f0     xxswapd vs0,vs34
 948:   d0 ff 20 39     li      r9,-48

objdump -D test | grep print_vec_long  -A 10
0000000000000924 <print_vec_long>:
 924:   02 00 4c 3c     addis   r2,r12,2
 928:   dc 75 42 38     addi    r2,r2,30172
 92c:   a6 02 08 7c     mflr    r0
 930:   10 00 01 f8     std     r0,16(r1)
 934:   f8 ff e1 fb     std     r31,-8(r1)
 938:   61 ff 21 f8     stdu    r1,-160(r1)
 93c:   78 0b 3f 7c     mr      r31,r1
 940:   78 00 7f f8     std     r3,120(r31)
 944:   56 12 02 f0     xxswapd vs0,vs34
 948:   d0 ff 20 39     li      r9,-48