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Fix gimple_seq_nondebug_singleton_p

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2015-06-09  Tom de Vries  <tom@codesourcery.com>

	* gimple-iterator.h (gimple_seq_nondebug_singleton_p): Don't
	always return false.

From-SVN: r224263
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Tom de Vries 2015-06-09 05:52:52 +00:00 committed by Tom de Vries
parent 7b337d2061
commit e92e61a7c2
2 changed files with 15 additions and 16 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-06-09 Tom de Vries <tom@codesourcery.com>
* gimple-iterator.h (gimple_seq_nondebug_singleton_p): Don't
always return false.
2015-06-09 Alexandre Oliva <aoliva@redhat.com>
PR rtl-optimization/64164

26
gcc/gimple-iterator.h
View File

@ -351,33 +351,27 @@ static inline bool
gimple_seq_nondebug_singleton_p (gimple_seq seq)
{
gimple_stmt_iterator gsi;
/* Find a nondebug gimple. */
gsi.ptr = gimple_seq_first (seq);
gsi.seq = &seq;
gsi.bb = NULL;
while (!gsi_end_p (gsi)
&& is_gimple_debug (gsi_stmt (gsi)))
gsi_next (&gsi);
/* Not a singleton if the sequence is empty. */
/* No nondebug gimple found, not a singleton. */
if (gsi_end_p (gsi))
return false;
/* Find a nondebug gimple. */
/* Find a next nondebug gimple. */
gsi_next (&gsi);
while (!gsi_end_p (gsi)
&& is_gimple_debug (gsi_stmt (gsi)))
gsi_next (&gsi);
/* Not a nondebug singleton if there's no nondebug gimple. */
if (is_gimple_debug (gsi_stmt (gsi)))
return false;
/* Find the next nondebug gimple. */
while (!gsi_end_p (gsi)
&& is_gimple_debug (gsi_stmt (gsi)))
gsi_next (&gsi);
/* If there's a next nondebug gimple, it's not a nondebug singleton. */
if (!gsi_end_p (gsi))
return false;
return true;
/* Only a singleton if there's no next nondebug gimple. */
return gsi_end_p (gsi);
}
#endif /* GCC_GIMPLE_ITERATOR_H */