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