gcc/testsuite/gcc.target/arm/pr51968.c

   1 /* PR target/51968 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Wno-implicit-function-declaration -march=armv7-a -mfloat-abi=softfp -mfpu=neon" } */
   4 /* { dg-require-effective-target arm_neon_ok } */
   5
   6 typedef __builtin_neon_qi int8x8_t __attribute__ ((__vector_size__ (8)));
   7 typedef __builtin_neon_uqi uint8x8_t __attribute__ ((__vector_size__ (8)));
   8 typedef __builtin_neon_qi int8x16_t __attribute__ ((__vector_size__ (16)));
   9 typedef __builtin_neon_hi int16x8_t __attribute__ ((__vector_size__ (16)));
  10 typedef __builtin_neon_si int32x4_t __attribute__ ((__vector_size__ (16)));
  11 struct T { int8x8_t val[2]; };
  12 int y;
  13
  14 void
  15 foo (int8x8_t z, int8x8_t x, int16x8_t b, int8x8_t n)
  16 {
  17   if (y)
  18     {
  19       struct T m;
  20       __builtin_neon_vuzpv8qi (&m.val[0], z, x);
  21     }
  22   for (;;)
  23     {
  24       int8x16_t g;
  25       int8x8_t h, j, k;
  26       struct T m;
  27       j = __builtin_neon_vqmovunv8hi (b);
  28       g = __builtin_neon_vcombinev8qi (j, h);
  29       k = __builtin_neon_vget_lowv16qi (g);
  30       __builtin_neon_vuzpv8qi (&m.val[0], k, n);
  31     }
  32 }