gcc/testsuite/gcc.target/powerpc/pr104015-1.c

   1 /* { dg-require-effective-target powerpc_vsx_ok } */
   2 /* { dg-options "-mdejagnu-cpu=power9 -mvsx -O2 -ftree-vectorize -fno-vect-cost-model -fdump-tree-vect-details" } */
   3
   4 /* As PR104015, we don't expect vectorizer will re-try some vector modes
   5    for epilogues on Power9, since Power9 doesn't support partial vector
   6    by defaut.  */
   7
   8 #include <stdarg.h>
   9 #define N 200
  10
  11 void __attribute__((noinline))
  12 foo (unsigned short *__restrict__ pInput, unsigned short *__restrict__ pOutput)
  13 {
  14   unsigned short i, a, b, c;
  15
  16   for (i = 0; i < N / 3; i++)
  17     {
  18        a = *pInput++;
  19        b = *pInput++;
  20        c = *pInput++;
  21
  22        *pOutput++ = a + b + c + 3;
  23        *pOutput++ = a + b + c + 12;
  24        *pOutput++ = a + b + c + 1;
  25     }
  26 }
  27
  28 /* { dg-final { scan-tree-dump-not "Re-trying epilogue analysis with vector mode" "vect" } } */