+#if HAVE_VSX
+static int pix_norm1_altivec(uint8_t *pix, int line_size)
+{
+ int i, s = 0;
+ const vector unsigned int zero =
+ (const vector unsigned int) vec_splat_u32(0);
+ vector unsigned int sv = (vector unsigned int) vec_splat_u32(0);
+ vector signed int sum;
+
+ for (i = 0; i < 16; i++) {
+ /* Read the potentially unaligned pixels. */
+ //vector unsigned char pixl = vec_ld(0, pix);
+ //vector unsigned char pixr = vec_ld(15, pix);
+ //vector unsigned char pixv = vec_perm(pixl, pixr, perm);
+ vector unsigned char pixv = vec_vsx_ld(0, pix);
+
+ /* Square the values, and add them to our sum. */
+ sv = vec_msum(pixv, pixv, sv);
+
+ pix += line_size;
+ }
+ /* Sum up the four partial sums, and put the result into s. */
+ sum = vec_sums((vector signed int) sv, (vector signed int) zero);
+ sum = vec_splat(sum, 3);
+ vec_vsx_st(sum, 0, &s);
+ return s;
+}
+#else