gcc/testsuite/gcc.dg/tree-ssa/redundant-assign-zero-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-tree-fre -fdump-tree-dse-details" } */
   3
   4 #include <string.h>
   5
   6 void blahd (double *);
   7
   8 void fubar ()
   9 {
  10   double d;
  11   double *x = &d;
  12
  13   memset (&d, 0 , sizeof d);
  14   *x = 0.0;
  15   blahd (x);
  16 }
  17
  18 /* { dg-final { scan-tree-dump-times "Deleted redundant store" 1 "dse1"} } */