function.c (thread_prologue_and_epilogue_insns): Don't delete the edge from a block...

	* 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 8c9a4a9cca8572f6a86040688e0eb4230068b833..42cc6b6e9e860729aeb332dab3ed4230444371d5 100644 (file)
--- 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 8b97be070046db653b214c72911f27ef330621a0..f9d27886a86b22d69701f5159c267f9095d037cc 100644 (file)
--- 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;