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authorUros Bizjak <uros@gcc.gnu.org>2013-11-10 19:38:36 +0100
committerUros Bizjak <uros@gcc.gnu.org>2013-11-10 19:38:36 +0100
commit611a4849b4d0f5ae97f3e702a856db6f183bb84f (patch)
tree201bef40495be7b1b52fb02996ff61d429c759c4 /gcc/mode-switching.c
parentcabeea52a72a20a2c286cdae5598c191da7bb25e (diff)
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mode-switching.c (optimize_mode_switching): Mark block as nontransparent, if last_mode at block exit is different from no_mode.
* mode-switching.c (optimize_mode_switching): Mark block as nontransparent, if last_mode at block exit is different from no_mode. From-SVN: r204649
Diffstat (limited to 'gcc/mode-switching.c')
-rw-r--r--gcc/mode-switching.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c
index 0b08998..d54f32c 100644
--- a/gcc/mode-switching.c
+++ b/gcc/mode-switching.c
@@ -571,12 +571,15 @@ optimize_mode_switching (void)
info[bb->index].computing = last_mode;
/* Check for blocks without ANY mode requirements.
- N.B. because of MODE_AFTER, last_mode might still be different
- from no_mode. */
+ N.B. because of MODE_AFTER, last_mode might still
+ be different from no_mode, in which case we need to
+ mark the block as nontransparent. */
if (!any_set_required)
{
ptr = new_seginfo (no_mode, BB_END (bb), bb->index, live_now);
add_seginfo (info + bb->index, ptr);
+ if (last_mode != no_mode)
+ bitmap_clear_bit (transp[bb->index], j);
}
}
#if defined (MODE_ENTRY) && defined (MODE_EXIT)