From: Richard Kenner <kenner@gcc.gnu.org>
Date: Sat, 25 Dec 1993 17:37:10 +0000 (-0500)
Subject: (check_dbra_loop): Fix error in previous change.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0c847d7db5dcd64ba8dc85ef425dc98f40d7df5a;p=gcc.git

(check_dbra_loop): Fix error in previous change.

From-SVN: r6316
---

diff --git a/gcc/loop.c b/gcc/loop.c
index 631d1fc98f6..60243f7755f 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -5731,7 +5731,9 @@ check_dbra_loop (loop_end, insn_count, loop_start)
 	 case, the insn should have been moved out of the loop.  */
 
       if (num_mem_sets == 1)
-	reversible_mem_store = ! invariant_p (XEXP (loop_store_mems[0], 0));
+	reversible_mem_store
+	  = (! unknown_address_altered
+	     && ! invariant_p (XEXP (loop_store_mems[0], 0)));
 
       /* This code only acts for innermost loops.  Also it simplifies
 	 the memory address check by only reversing loops with