From: Bernd Schmidt <bernds@cygnus.co.uk>
Date: Mon, 29 Nov 1999 10:51:09 +0000 (+0000)
Subject: Fix abort in loop_iterations
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=311fe27c71628f8d246b23084f5ce2168912215e;p=gcc.git

Fix abort in loop_iterations

From-SVN: r30698
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ef7b57da8ab..717e1e2599d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+1999-11-29  Bernd Schmidt  <bernds@cygnus.co.uk>
+
+	* unroll.c (loop_iterations): Don't abort if iteration variable
+	was made by loop.
+
 1999-11-29  David S. Miller  <davem@redhat.com>
 
 	* config/sparc/sparc.c (init_cumulative_args): Fix type of third
diff --git a/gcc/unroll.c b/gcc/unroll.c
index 3994e79c226..94451e1717b 100644
--- a/gcc/unroll.c
+++ b/gcc/unroll.c
@@ -3687,11 +3687,9 @@ loop_iterations (loop_start, loop_end, loop_info)
       return 0;
     }
 
-  /* The only new registers that care created before loop iterations are
-     givs made from biv increments, so this should never occur.  */
-
+  /* This can happen due to optimization in load_mems.  */
   if ((unsigned) REGNO (iteration_var) >= reg_iv_type->num_elements)
-    abort ();
+    return 0;
 
   iteration_info (iteration_var, &initial_value, &increment,
 		  loop_start, loop_end);