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

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

gcc/ChangeLog

+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

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;