gcc/testsuite/gcc.dg/tree-ssa/ivopt_1.c

   1 /* { dg-do compile { target {{ i?86-*-* x86_64-*-* } && lp64 } } } */
   2 /* { dg-options "-O2 -m64 -fdump-tree-ivopts" } */
   3 #define TYPE char*
   4
   5 /* Testing that only one induction variable is selected after IVOPT on
   6    the given target 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[x] = ( src1[x] + src2[x] + 1 ) >> 1;
  13        }
  14 }
  15
  16
  17 /* { dg-final { scan-tree-dump-times "ivtmp.\[0-9_\]* = PHI <" 1 "ivopts"} } */