gcc/testsuite/gcc.target/aarch64/construct_lane_zero_1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 typedef long long v2di __attribute__ ((vector_size (16)));
   5 typedef double v2df __attribute__ ((vector_size (16)));
   6
   7 v2di
   8 construct_lanedi (long long *y)
   9 {
  10   v2di x =
  11 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  12   { 0, y[0] }
  13 #else
  14   { y[0], 0 }
  15 #endif
  16   ;
  17   return x;
  18 }
  19
  20 v2df
  21 construct_lanedf (double *y)
  22 {
  23   v2df x =
  24 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  25   { 0.0, y[0] }
  26 #else
  27   { y[0], 0.0 }
  28 #endif
  29   ;
  30   return x;
  31 }
  32
  33 /* Check that creating V2DI and V2DF vectors from a lane with a zero
  34    makes use of the D-reg LDR rather than doing explicit lane inserts.  */
  35
  36 /* { dg-final { scan-assembler-times "ldr\td\[0-9\]+" 2 } } */
  37 /* { dg-final { scan-assembler-not "ins\t" } } */