From: Clinton Popetz <cpopetz@cygnus.com>
Date: Thu, 10 Feb 2000 00:20:41 +0000 (+0000)
Subject: function.c (thread_prologue_and_epilogue_insns): Don't delete the edge from a block... 
X-Git-Tag: prereleases/libstdc++-2.92~8310
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3a75e42e813997b8144619d6031b729690639922;p=thirdparty%2Fgcc.git

function.c (thread_prologue_and_epilogue_insns): Don't delete the edge from a block that both jumps and falls through to the...

	* function.c (thread_prologue_and_epilogue_insns): Don't delete
	the edge from a block that both jumps and falls through to the
	fallthru block.

From-SVN: r31878
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8c9a4a9cca85..42cc6b6e9e86 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2000-02-09  Clinton Popetz  <cpopetz@cygnus.com>
+
+	* function.c (thread_prologue_and_epilogue_insns): Don't delete
+	the edge from a block that both jumps and falls through to the
+	fallthru block.
+
 2000-02-09  Scott Bambrough  <scottb@netwinder.org>
 
         * config/arm/arm.md (movsi): In PIC mode, make sure that a
diff --git a/gcc/function.c b/gcc/function.c
index 8b97be070046..f9d27886a86b 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -6727,6 +6727,12 @@ thread_prologue_and_epilogue_insns (f)
 		    continue;
 		  if (JUMP_LABEL (jump))
 		    LABEL_NUSES (JUMP_LABEL (jump))--;
+				  
+		  /* If this block has only one successor, it both jumps
+		     and falls through to the fallthru block, so we can't
+		     delete the edge.  */
+   		  /*if (bb->succ->succ_next == NULL)
+	     	    continue;*/
 		}
 	      else
 		continue;