Viewing file:  20030703-2.c (1.19 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-dom2" } */
extern void abort (void);
union tree_node;
typedef union tree_node *tree;
extern const char tree_code_type[];
union tree_node
{
int code;
long pointer_alias_set;
};
long
get_alias_set (t)
tree t;
{
if (tree_code_type[t->code])
abort ();
if (t->pointer_alias_set)
{
tree __t = t;
if (tree_code_type[__t->code])
abort ();
}
}
/* There should be precisely one load of {t,__t}->code. If there is
more than one, then the dominator optimizations failed. */
/* { dg-final { scan-tree-dump-times "->code" 1 "dom2"} } */
/* There should be precisely one load of tree_code_type. If there is
more than one, then the dominator optimizations failed. */
/* { dg-final { scan-tree-dump-times "tree_code_type" 1 "dom2"} } */
/* There should be one IF conditional. If 'tree_code_type[t->code]' is
zero, then the third if() conditional is unnecessary. That should cause
the call to abort() to be removed, which in turn causes the whole second
if() to disappear. */
/* { dg-final { scan-tree-dump-times "if " 1 "dom2"} } */
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