gcc/testsuite/gcc.dg/tree-ssa/ivopt_2.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 /* Testing on the given target, only one iv candidate instead of 3.  */
   7 void foo (int i_width, TYPE dst, TYPE src1, TYPE src2)
   8 {
   9       int x;
  10        for( x = 0; x < i_width; x++ )
  11        {
  12            *dst++ = ( *src1++ + *src2++ + 1 ) >> 1;
  13        }
  14 }
  15
  16 /* { dg-final { scan-tree-dump-times "ivtmp.\[0-9_\]* = PHI <" 1 "ivopts"} } */