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* tree-phinodes.c: Remove trailing whitespace.

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From-SVN: r89760
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Kazu Hirata 2004-10-28 14:41:05 +00:00 committed by Kazu Hirata
parent 1c170b5eba
commit 50d895a7d6
2 changed files with 17 additions and 13 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2004-10-28 Kazu Hirata <kazu@cs.umass.edu>
* tree-phinodes.c: Remove trailing whitespace.
2004-10-28 Kazu Hirata <kazu@cs.umass.edu>
* tree-ssa-loop-ivopts.c: Fix a comment typo.

26
gcc/tree-phinodes.c
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@ -1,23 +1,23 @@
/* Generic routines for manipulating PHIs
Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
@ -32,7 +32,7 @@ Boston, MA 02111-1307, USA. */
/* Rewriting a function into SSA form can create a huge number of PHIs
many of which may be thrown away shortly after their creation if jumps
were threaded through PHI nodes.
were threaded through PHI nodes.
While our garbage collection mechanisms will handle this situation, it
is extremely wasteful to create nodes and throw them away, especially
@ -46,12 +46,12 @@ Boston, MA 02111-1307, USA. */
Right now we maintain our free list on a per-function basis. It may
or may not make sense to maintain the free list for the duration of
a compilation unit.
a compilation unit.
We could also use a zone allocator for these objects since they have
a very well defined lifetime. If someone wants to experiment with that
this is the place to try it.
PHI nodes have different sizes, so we can't have a single list of all
the PHI nodes as it would be too expensive to walk down that list to
find a PHI of a suitable size.
@ -71,7 +71,7 @@ Boston, MA 02111-1307, USA. */
be very expensive if the program has released a bunch of large PHI nodes,
but keeps asking for even larger PHI nodes. Experiments have shown that
walking the elements of the last array entry would result in finding less
than .1% additional reusable PHI nodes.
than .1% additional reusable PHI nodes.
Note that we can never have less than two PHI argument slots. Thus,
the -2 on all the calculations below. */
@ -149,8 +149,8 @@ ideal_phi_node_len (int len)
/* Round it up to the next power of two. */
log2 = ceil_log2 (size);
new_size = 1 << log2;
/* Now compute and return the number of PHI argument slots given an
/* Now compute and return the number of PHI argument slots given an
ideal size allocation. */
new_len = len + (new_size - size) / sizeof (struct phi_arg_d);
return new_len;
@ -228,7 +228,7 @@ release_phi_node (tree phi)
/* Resize an existing PHI node. The only way is up. Return the
possibly relocated phi. */
static void
resize_phi_node (tree *phi, int len)
{
@ -273,7 +273,7 @@ resize_phi_node (tree *phi, int len)
old_len = PHI_ARG_CAPACITY (new_phi);
PHI_ARG_CAPACITY (new_phi) = len;
for (i = old_len; i < len; i++)
{
SET_PHI_ARG_DEF (new_phi, i, NULL_TREE);