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Improve function header comments in tree-ssa-loop-manip.c

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2015-08-31  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-loop-manip.c (find_uses_to_rename_use)
	(find_uses_to_rename_stmt, find_uses_to_rename_bb, find_uses_to_rename):
	Improve function header comments.

From-SVN: r227334
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Tom de Vries 2015-08-31 09:12:15 +00:00 committed by Tom de Vries
parent 97532d1aab
commit 4ba00e9dba
2 changed files with 18 additions and 12 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-08-31 Tom de Vries <tom@codesourcery.com>
* tree-ssa-loop-manip.c (find_uses_to_rename_use)
(find_uses_to_rename_stmt, find_uses_to_rename_bb, find_uses_to_rename):
Improve function header comments.
2015-08-30 Michael Collison <michael.collison@linaro.org>
PR other/67320

24
gcc/tree-ssa-loop-manip.c
View File

@ -366,7 +366,9 @@ get_loops_exits (bitmap *loop_exits)
/* For USE in BB, if it is used outside of the loop it is defined in,
mark it for rewrite. Record basic block BB where it is used
to USE_BLOCKS. Record the ssa name index to NEED_PHIS bitmap. */
to USE_BLOCKS. Record the ssa name index to NEED_PHIS bitmap.
Note that for USEs in phis, BB should be the src of the edge corresponding to
the use, rather than the bb containing the phi. */
static void
find_uses_to_rename_use (basic_block bb, tree use, bitmap *use_blocks,
@ -402,9 +404,8 @@ find_uses_to_rename_use (basic_block bb, tree use, bitmap *use_blocks,
}
/* For uses in STMT, mark names that are used outside of the loop they are
defined to rewrite. Record the set of blocks in that the ssa
names are defined to USE_BLOCKS and the ssa names themselves to
NEED_PHIS. */
defined to rewrite. Record the set of blocks in which the ssa names are used
to USE_BLOCKS and the ssa names themselves to NEED_PHIS. */
static void
find_uses_to_rename_stmt (gimple stmt, bitmap *use_blocks, bitmap need_phis)
@ -420,10 +421,9 @@ find_uses_to_rename_stmt (gimple stmt, bitmap *use_blocks, bitmap need_phis)
find_uses_to_rename_use (bb, var, use_blocks, need_phis);
}
/* Marks names that are used in BB and outside of the loop they are
defined in for rewrite. Records the set of blocks in that the ssa
names are defined to USE_BLOCKS. Record the SSA names that will
need exit PHIs in NEED_PHIS. */
/* Marks names that are used in BB and outside of the loop they are defined in
for rewrite. Records the set of blocks in which the ssa names are used to
USE_BLOCKS. Record the SSA names that will need exit PHIs in NEED_PHIS. */
static void
find_uses_to_rename_bb (basic_block bb, bitmap *use_blocks, bitmap need_phis)
@ -446,10 +446,10 @@ find_uses_to_rename_bb (basic_block bb, bitmap *use_blocks, bitmap need_phis)
find_uses_to_rename_stmt (gsi_stmt (bsi), use_blocks, need_phis);
}
/* Marks names that are used outside of the loop they are defined in
for rewrite. Records the set of blocks in that the ssa
names are defined to USE_BLOCKS. If CHANGED_BBS is not NULL,
scan only blocks in this set. */
/* Marks names that are used outside of the loop they are defined in for
rewrite. Records the set of blocks in which the ssa names are used to
USE_BLOCKS. Record the SSA names that will need exit PHIs in NEED_PHIS. If
CHANGED_BBS is not NULL, scan only blocks in this set. */
static void
find_uses_to_rename (bitmap changed_bbs, bitmap *use_blocks, bitmap need_phis)