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cfgloop.c (flow_loops_find): Initialize first and last fields correctly. 

* cfgloop.c (flow_loops_find): Initialize first and last fields
	correctly.

From-SVN: r54104
This commit is contained in:
Zdenek Dvorak 2002-05-31 13:09:17 +02:00 committed by Zdenek Dvorak
parent ba9e1571a0
commit 8a72fb761e
2 changed files with 16 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-05-31 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* cfgloop.c (flow_loops_find): Initialize first and last fields
correctly.
2002-05-31 Neil Booth <neil@daikokuya.demon.co.uk>
* c-common.c (builtin_define_std): Correct logic.

16
gcc/cfgloop.c
View File

@ -644,7 +644,7 @@ flow_loops_find (loops, flags)
sbitmap *dom;
int *dfs_order;
int *rc_order;
basic_block header;
basic_block header, bb;
/* This function cannot be repeatedly called with different
flags to build up the loop information. The loop tree
@ -768,10 +768,16 @@ flow_loops_find (loops, flags)
These are often the same as the loop header and
loop latch respectively, but this is not always
the case. */
loop->first
= BASIC_BLOCK (sbitmap_first_set_bit (loop->nodes));
loop->last
= BASIC_BLOCK (sbitmap_last_set_bit (loop->nodes));
FOR_EACH_BB (bb)
if (TEST_BIT (loop->nodes, bb->index))
break;
loop->first = bb;
FOR_EACH_BB_REVERSE (bb)
if (TEST_BIT (loop->nodes, bb->index))
break;
loop->last = bb;
flow_loop_scan (loops, loop, flags);
}