gcc/testsuite/gcc.target/powerpc/swaps-p8-21.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target powerpc_altivec_ok } */
   3 /* { dg-options "-O2 -mdejagnu-cpu=power8 -maltivec" } */
   4
   5 /* The expansion for vector character multiply introduces a vperm operation.
   6    This tests that changing the vperm mask allows us to remove all swaps
   7    from the generated code.  */
   8
   9 #include <altivec.h>
  10
  11 void abort ();
  12
  13 vector unsigned char r;
  14 vector unsigned char v =
  15   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
  16 vector unsigned char i =
  17   { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
  18
  19 int main ()
  20 {
  21   int j;
  22   r = v * i;
  23   return 0;
  24 }
  25
  26 /* { dg-final { scan-assembler-times "vperm" 1 } } */
  27 /* { dg-final { scan-assembler-not "xxpermdi" } } */