gcc/testsuite/gcc.dg/tree-ssa/pr62112-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dse1-details" } */
   3
   4 void f(){
   5   char*p=__builtin_malloc(42);
   6   __builtin_memset(p,3,10);
   7   __builtin_memset(p,7,33);
   8 }
   9 char*g;
  10 void h(){
  11   char*p=__builtin_malloc(42);
  12   g=__builtin_memset(p,3,10);
  13   __builtin_free(p);
  14 }
  15 char*i(){
  16   char*p=__builtin_malloc(42);
  17   __builtin_memset(p,3,10);
  18   __builtin_memset(p,7,33);
  19   return p;
  20 }
  21
  22 /* { dg-final { scan-tree-dump-times "Deleted dead call" 4 "dse1" } } */
  23 /* { dg-final { cleanup-tree-dump "dse1" } } */