gcc/testsuite/gcc.target/arm/pr48183.c

   1 /* testsuite/gcc.target/arm/pr48183.c */
   2
   3 /* { dg-do compile } */
   4 /* { dg-require-effective-target arm_neon_ok } */
   5 /* { dg-options "-O -g" } */
   6 /* { dg-add-options arm_neon } */
   7
   8 #include <arm_neon.h>
   9
  10 void move_16bit_to_32bit (int32_t *dst, const short *src, unsigned n)
  11 {
  12     unsigned i;
  13     int16x4x2_t input;
  14     int32x4x2_t mid;
  15     int32x4x2_t output;
  16
  17     for (i = 0; i < n/2; i += 8) {
  18         input = vld2_s16(src + i);
  19         mid.val[0] = vmovl_s16(input.val[0]);
  20         mid.val[1] = vmovl_s16(input.val[1]);
  21         output.val[0] = vshlq_n_s32(mid.val[0], 8);
  22         output.val[1] = vshlq_n_s32(mid.val[1], 8);
  23         vst2q_s32((int32_t *)dst + i, output);
  24     }
  25 }