loop.c (check_dbra_loop): Return if more than one condition is present to control the loop.

        * loop.c (check_dbra_loop) : Return if more than one condition is
        present to control the loop.

From-SVN: r35096

2 files changed, 16 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7509ddf..e407547 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-07-17  Chandrakala Chavva   <cchavva@cygnus.com>
+
+	* loop.c (check_dbra_loop) : Return if more than one condition is 
+	present to control the loop.
+
 Mon Jul 17 08:26:35 2000  Clinton Popetz  <cpopetz@cygnus.com>
 
 	* mips.c (mips_expand_prologue): Don't calculate the last               
diff --git a/gcc/loop.c b/gcc/loop.c
index 066ef93..7015dc9 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -7795,6 +7795,17 @@ check_dbra_loop (loop, insn_count)
   else
     return 0;
 
+  {
+    /* If more than one condition is present to control the loop, then
+       do not procceed as this function does not know how to rewrite loop 
+       tests with more than one condition.  */
+
+    rtx jump1;
+    if ((jump1 = prev_nonnote_insn (jump)) != loop_continue)
+      if (GET_CODE (jump1) == JUMP_INSN))
+        return 0;
+  }
+
   /* Check all of the bivs to see if the compare uses one of them.
      Skip biv's set more than once because we can't guarantee that
      it will be zero on the last iteration.  Also skip if the biv is