gnu/dist/gcc4/gcc/testsuite/gcc.dg/tree-ssa/20030814-7.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dom3" } */
   3
   4 extern void abort (void);
   5 struct rtx_def;
   6 typedef struct rtx_def *rtx;
   7 struct rtvec_def;
   8 typedef struct rtvec_def *rtvec;
   9 union tree_node;
  10 typedef union tree_node *tree;
  11 struct tree_common
  12 {
  13   int code;
  14 };
  15 union tree_node
  16 {
  17   struct tree_common common;
  18 };
  19 extern tree current_function_decl;
  20 struct cgraph_rtl_info
  21 {
  22   _Bool pure_function;
  23 };
  24 struct cgraph_rtl_info *cgraph_rtl_info (tree);
  25 void
  26 mark_constant_function (void)
  27 {
  28   rtx insn;
  29   int nonlocal_memory_referenced;
  30
  31   if (current_function_decl->common.code != 42)
  32     abort ();
  33
  34   cgraph_rtl_info (current_function_decl)->pure_function = 1;
  35 }
  36
  37 /* current_function_decl should be loaded once into a temporary
  38    and the temporary used as the argument to cgraph_rtl_info.
  39    This if we find current_function_decl used as an argument, then
  40    we have failed.  */
  41 /* { dg-final { scan-tree-dump-times "\\(current_function_decl\\)" 0 "dom3"} } */
  42 /* { dg-final { cleanup-tree-dump "dom3" } } */