[committed] Restore nios2 builds

[Jeff Law]

The recent alignment changes broke nios2 as it referenced
align_labels_log.  This patch updates it to use align_labels.levels[0].log.

Installing on the trunk.

Jeff

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2e724217fa4..d8057a074a1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-07-17  Jeff Law  <l...@redhat.com>
+
+       * config/nios2/nios2.c (nios2_label_align): Update for recent
+       changes which dropped ALIGN_LABELS_LOG.
+
 2018-07-17  Andreas Schwab  <sch...@linux-m68k.org>
 
        * config/m68k/m68k.md (umulsi3_highpart+1, const_umulsi3_highpart)
diff --git a/gcc/config/nios2/nios2.c b/gcc/config/nios2/nios2.c
index 3581ad9340d..344181a496b 100644
--- a/gcc/config/nios2/nios2.c
+++ b/gcc/config/nios2/nios2.c
@@ -5403,8 +5403,8 @@ nios2_label_align (rtx label)
   int n = CODE_LABEL_NUMBER (label);
 
   if (label_align && n >= min_labelno && n <= max_labelno)
-    return MAX (label_align[n - min_labelno], align_labels_log);
-  return align_labels_log;
+    return MAX (label_align[n - min_labelno], align_labels.levels[0].log);
+  return align_labels.levels[0].log;
 }
 
 /* Implement ADJUST_REG_ALLOC_ORDER.  We use the default ordering