gcc/testsuite/gcc.target/powerpc/swaps-p8-22.c

   1 /* { dg-do compile { target { powerpc64le-*-* } } } */
   2 /* { dg-options "-O2 -mdejagnu-cpu=power8 -maltivec -mcmodel=large" } */
   3
   4 /* The expansion for vector character multiply introduces a vperm operation.
   5    This tests that changing the vperm mask allows us to remove all swaps
   6    from the generated code.  It is a duplicate of swaps-p8-21.c, except
   7    that it applies the large code model, which requires an extra indirection
   8    in the load of the constant mask.  */
   9
  10 #include <altivec.h>
  11
  12 void abort ();
  13
  14 vector unsigned char r;
  15 vector unsigned char v =
  16   { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
  17 vector unsigned char i =
  18   { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
  19
  20 int main ()
  21 {
  22   int j;
  23   r = v * i;
  24   return 0;
  25 }
  26
  27 /* { dg-final { scan-assembler-times "vperm" 1 } } */
  28 /* { dg-final { scan-assembler-not "xxpermdi" } } */