1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/loop.c b/gcc/loop.c
index 9461530e894..04f95ab4925 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -3273,6 +3273,13 @@ loop_invariant_p (loop, x)
 	  && REGNO (x) < FIRST_PSEUDO_REGISTER && call_used_regs[REGNO (x)])
 	return 0;
 
+      /* Out-of-range regs can occur when we are called from unrolling.
+	 These have always been created by the unroller and are set in
+	 the loop, hence are never invariant. */
+
+      if (REGNO (x) >= regs->num)
+	return 0;
+
       if (regs->array[REGNO (x)].set_in_loop < 0)
 	return 2;