gcc/testsuite/gcc.target/powerpc/vec-extract-uchar-1.c

/* Test to verify that the vec_extract from a vector of
   unsigned chars remains unsigned.  */
/* { dg-do run } */
/* { dg-options "-ansi -mdejagnu-cpu=power8 " } */
/* { dg-require-effective-target p8vector_hw } */

#include <altivec.h>
#include <stdio.h>
#include <stdlib.h>

int test1(unsigned char uc) {
  int uce;

  vector unsigned char v = vec_splats(uc);
  uce = vec_extract(v,0);

  if (uce != uc)
    abort();
  return 0;
}

int main()
{
  test1 (0xf6);
  test1 (0x76);
  test1 (0x06);
  return 0;
}