gcc/testsuite/gcc.dg/tree-ssa/ivopt_4.c

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