re PR tree-optimization/70405 (-fcompare-debug failure with -mavx512f)

	PR tree-optimization/70405
	* ssa-iterators.h (num_imm_uses): Add missing braces.

	* gcc.dg/pr70405.c: New test.

From-SVN: r234529

gcc/ChangeLog

+2016-03-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/70405
+	* ssa-iterators.h (num_imm_uses): Add missing braces.
+
 2016-03-29  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR rtl-optimization/68695

gcc/ssa-iterators.h

@@ -448,9 +448,11 @@ num_imm_uses (const_tree var)
   unsigned int num = 0;
 
   if (!MAY_HAVE_DEBUG_STMTS)
-    for (ptr = start->next; ptr != start; ptr = ptr->next)
-      if (USE_STMT (ptr))
-	num++;
+    {
+      for (ptr = start->next; ptr != start; ptr = ptr->next)
+	if (USE_STMT (ptr))
+	  num++;
+    }
   else
     for (ptr = start->next; ptr != start; ptr = ptr->next)
       if (USE_STMT (ptr) && !is_gimple_debug (USE_STMT (ptr)))

gcc/testsuite/ChangeLog

+2016-03-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/70405
+	* gcc.dg/pr70405.c: New test.
+
 2016-03-29  Andre Vehreschild  <vehre@gcc.gnu.org>
 
 	PR fortran/70397

gcc/testsuite/gcc.dg/pr70405.c

+/* PR tree-optimization/70405 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcompare-debug" } */
+/* { dg-additional-options "-mavx512f" { target i?86-*-* x86_64-*-* } } */
+
+typedef short V __attribute__ ((vector_size (32)));
+
+int
+foo (V *p)
+{
+  V v = *p;
+  v >>= v;
+  v -= v[0];
+  return v[3];
+}