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/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-dom2 -fdump-tree-optimized" } */
extern void abort (void);
union tree_node;
typedef union tree_node *tree;
extern const char tree_code_type[];
struct tree_common
{
int code;
};
struct tree_decl
{
long pointer_alias_set;
};
union tree_node
{
struct tree_common common;
struct tree_decl decl;
};
long
blah (decl, set)
tree decl;
long set;
{
decl->decl.pointer_alias_set = set;
if (tree_code_type[decl->common.code] != 'd')
abort ();
record_alias_subset (decl->decl.pointer_alias_set);
if (set != -1)
set = 0;
return set;
}
/* There should be precisely one reference to pointer_alias_set. If there is
more than one, then the dominator optimizations failed. */
/* { dg-final { scan-tree-dump-times "pointer_alias_set" 1 "dom2"} } */
/* { dg-final { cleanup-tree-dump "dom2" } } */
/* The assignment set = -1 in the ELSE clause of the last IF
statement should be removed by the final cleanup phase. */
/* { dg-final { scan-tree-dump-times "set = -1" 0 "optimized"} } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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