Daily bump.

[gcc.git] / gcc / rtlanal.c

diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 1d2874d867272b878a3bdf39e2b909f84ad73329..01130a10783d63d7dc541eaf70743241fa15394f 100644 (file)
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -97,7 +97,7 @@ generic_subrtx_iterator <T>::add_single_to_queue (array_type &array,
       /* A previous iteration might also have moved from the stack to the
         heap, in which case the heap array will already be big enough.  */
       if (vec_safe_length (array.heap) <= i)
-       vec_safe_grow (array.heap, i + 1);
+       vec_safe_grow (array.heap, i + 1, true);
       base = array.heap->address ();
       memcpy (base, array.stack, sizeof (array.stack));
       base[LOCAL_ELEMS] = x;
@@ -1619,6 +1619,10 @@ set_noop_p (const_rtx set)
        return 0;
       src = SUBREG_REG (src);
       dst = SUBREG_REG (dst);
+      if (GET_MODE (src) != GET_MODE (dst))
+       /* It is hard to tell whether subregs refer to the same bits, so act
+          conservatively and return 0.  */
+       return 0;
     }
 
   /* It is a NOOP if destination overlaps with selected src vector