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loop.c (force_movables): Transitively increase the priorities of all insns forces by an insn... 

* loop.c (force_movables): Transitively increase the priorities of
	all insns forces by an insn, not just the first one.

From-SVN: r77419
This commit is contained in:
Ulrich Weigand 2004-02-06 20:10:35 +00:00 committed by Ulrich Weigand
parent 014a1138d6
commit 1f0db3dfca
2 changed files with 14 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-02-06 Ulrich Weigand <uweigand@de.ibm.com>
* loop.c (force_movables): Transitively increase the priorities of
all insns forces by an insn, not just the first one.
2004-02-06 Josef Zlomek <zlomekj@suse.cz>
Daniel Berlin <dberlin@dberlin.org>

12
gcc/loop.c
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@ -1469,12 +1469,18 @@ force_movables (struct loop_movables *movables)
m = 0;
/* Increase the priority of the moving the first insn
since it permits the second to be moved as well. */
since it permits the second to be moved as well.
Likewise for insns already forced by the first insn. */
if (m != 0)
{
struct movable *m2;
m->forces = m1;
m1->lifetime += m->lifetime;
m1->savings += m->savings;
for (m2 = m1; m2; m2 = m2->forces)
{
m2->lifetime += m->lifetime;
m2->savings += m->savings;
}
}
}
}