From 3ec32924f699ba537ae29631bc2748155326f850 Mon Sep 17 00:00:00 2001
From: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 15 Jul 2005 09:46:17 +0000
Subject: [PATCH] * cfg.c (update_bb_profile_for_threading): More
diagnostic. * tree-ssa-threadupdate.c (redirect_edges): Update profile of
dup_block.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102053 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 5 +++++
gcc/cfg.c | 14 ++++++++++++--
gcc/tree-ssa-threadupdate.c | 3 +++
3 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 317e2d75f11a..525ad008bb20 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-07-15 Jan Hubicka <jh@suse.cz>
+
+ * cfg.c (update_bb_profile_for_threading): More diagnostic.
+ * tree-ssa-threadupdate.c (redirect_edges): Update profile of dup_block.
+
2005-07-15 Richard Guenther <rguenther@suse.de>
* c-common.c (handle_flatten_attribute): New function.
diff --git a/gcc/cfg.c b/gcc/cfg.c
index 2d6a3ca5c336..6aeb79417f99 100644
--- a/gcc/cfg.c
+++ b/gcc/cfg.c
@@ -850,7 +850,12 @@ update_bb_profile_for_threading (basic_block bb, int edge_frequency,
bb->count -= count;
if (bb->count < 0)
- bb->count = 0;
+ {
+ if (dump_file)
+ fprintf (dump_file, "bb %i count became negative after threading",
+ bb->index);
+ bb->count = 0;
+ }
/* Compute the probability of TAKEN_EDGE being reached via threaded edge.
Watch for overflows. */
@@ -897,7 +902,12 @@ update_bb_profile_for_threading (basic_block bb, int edge_frequency,
gcc_assert (bb == taken_edge->src);
taken_edge->count -= count;
if (taken_edge->count < 0)
- taken_edge->count = 0;
+ {
+ if (dump_file)
+ fprintf (dump_file, "edge %i->%i count became negative after threading",
+ taken_edge->src->index, taken_edge->dest->index);
+ taken_edge->count = 0;
+ }
}
/* Multiply all frequencies of basic blocks in array BBS of length NBBS
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c
index a89a438f6301..6181b27978d6 100644
--- a/gcc/tree-ssa-threadupdate.c
+++ b/gcc/tree-ssa-threadupdate.c
@@ -609,6 +609,9 @@ redirect_edges (void **slot, void *data)
fprintf (dump_file, " Threaded jump %d --> %d to %d\n",
e->src->index, e->dest->index, rd->dup_block->index);
+ rd->dup_block->count += e->count;
+ rd->dup_block->frequency += EDGE_FREQUENCY (e);
+ EDGE_SUCC (rd->dup_block, 0)->count += e->count;
/* Redirect the incoming edge to the appropriate duplicate
block. */
e2 = redirect_edge_and_branch (e, rd->dup_block);
--
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