gcc/testsuite/gcc.dg/tree-ssa/ivopt_3.c

   1 /* { dg-do compile { target {{ i?86-*-* x86_64-*-* } && lp64 } } } */
   2 /* { dg-options "-O2 -m64 -fdump-tree-ivopts" } */
   3
   4 #define TYPE char*
   5
   6 /* Make sure only 1 iv candidate is selected after IVOPT.  */
   7 void foo (int i_width, char* dst, char* src1, char* src2)
   8 {
   9       int x;
  10        for( x = 0; x < i_width; x++ )
  11        {
  12            *((TYPE)dst) = ( *((TYPE)src1) + *((TYPE)src2) + 1 ) >> 1;
  13            dst+=sizeof(TYPE);
  14            src1+=sizeof(TYPE);
  15            src2+=sizeof(TYPE);
  16        }
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "PHI <ivtmp" 1 "ivopts"} } */
  20 /* { dg-final { cleanup-tree-dump "ivopts" } } */