From: Jan Hubicka <jh@suse.cz>
Date: Mon, 14 Jan 2002 19:21:21 +0000 (+0100)
Subject: cfgcleanup.c (try_forward_edges): Avoid infinite loop at infinite threaded loop.
X-Git-Tag: prereleases/libstdc++-3.0.96~442
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b90e45aed287fbba1e7baf0b1e39107f85756793;p=thirdparty%2Fgcc.git

cfgcleanup.c (try_forward_edges): Avoid infinite loop at infinite threaded loop.


	* cfgcleanup.c (try_forward_edges): Avoid infinite loop at infinite
	threaded loop.

From-SVN: r48837
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bed8af0e0504..e95275f27a38 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jan 14 20:18:19 CET 2002  Jan Hubicka  <jh@suse.cz>
+
+	* cfgcleanup.c (try_forward_edges): Avoid infinite loop at infinite
+	threaded loop.
+
 2002-01-14  Tom Rix  <trix@redhat.com>
 
 	* config/rs6000/rs6000.md: Fix typo with sradi.
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c
index 5015c8149412..13c5a8e1352b 100644
--- a/gcc/cfgcleanup.c
+++ b/gcc/cfgcleanup.c
@@ -426,7 +426,10 @@ try_forward_edges (mode, b)
 			if (threaded_edges[i] == t)
 			  break;
 		      if (i < nthreaded_edges)
-			break;
+			{
+			  counter = n_basic_blocks;
+			  break;
+			}
 		    }
 
 		  /* Detect an infinite loop across the start block.  */
diff --git a/gcc/toplev.c b/gcc/toplev.c
index 5d58ead1fd23..e8b6102d8d6c 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -2810,6 +2810,7 @@ rest_of_compilation (decl)
       find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
       cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
       tem = gcse_main (insns, rtl_dump_file);
+      rebuild_jump_labels (insns);
 
       save_csb = flag_cse_skip_blocks;
       save_cfj = flag_cse_follow_jumps;