2002-11-15 Eric Botcazou <ebotcazou@libertysurf.fr>

[pf3gnuchains/gcc-fork.git] / gcc / loop.c

diff --git a/gcc/loop.c b/gcc/loop.c
index 9461530..04f95ab 100644 (file)
--- 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;