ipa-cp.c (ipcp_store_vr_results): Avoid static local var zero.

	* ipa-cp.c (ipcp_store_vr_results): Avoid static local
	var zero.
	* sreal.h (sreal::min, sreal::max): Avoid static local vars,
	construct values without normalization.
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Don't initialize
	static local lhs_ops to vNULL.
cp/
	* name-lookup.c (store_bindings, store_class_bindings): Don't
	initialize static local bindings_need_stored to vNULL.

From-SVN: r240408

gcc/ChangeLog

+2016-09-23  Jakub Jelinek  <jakub@redhat.com>
+
+	* ipa-cp.c (ipcp_store_vr_results): Avoid static local
+	var zero.
+	* sreal.h (sreal::min, sreal::max): Avoid static local vars,
+	construct values without normalization.
+	* tree-ssa-sccvn.c (vn_reference_lookup_3): Don't initialize
+	static local lhs_ops to vNULL.
+
 2016-09-23  Matthew Wahab  <matthew.wahab@arm.com>
 	    Jiong Wang <jiong.wang@arm.com>
 

gcc/cp/ChangeLog

 2016-09-23  Jakub Jelinek  <jakub@redhat.com>
 
+	* name-lookup.c (store_bindings, store_class_bindings): Don't
+	initialize static local bindings_need_stored to vNULL.
+
 	* typeck2.c (process_init_constructor_record): Use
 	CONSTRUCTOR_NELTS (...) instead of
 	vec_safe_length (CONSTRUCTOR_ELTS (...)).

gcc/cp/name-lookup.c

@@ -6197,7 +6197,7 @@ store_binding (tree id, vec<cxx_saved_binding, va_gc> **old_bindings)
 static void
 store_bindings (tree names, vec<cxx_saved_binding, va_gc> **old_bindings)
 {
-  static vec<tree> bindings_need_stored = vNULL;
+  static vec<tree> bindings_need_stored;
   tree t, id;
   size_t i;
 
@@ -6233,7 +6233,7 @@ static void
 store_class_bindings (vec<cp_class_binding, va_gc> *names,
 		      vec<cxx_saved_binding, va_gc> **old_bindings)
 {
-  static vec<tree> bindings_need_stored = vNULL;
+  static vec<tree> bindings_need_stored;
   size_t i;
   cp_class_binding *cb;
 

gcc/ipa-cp.c

@@ -5204,11 +5204,9 @@ ipcp_store_vr_results (void)
 	 }
        else
 	 {
-	   static wide_int zero = integer_zero_node;
 	   vr.known = false;
 	   vr.type = VR_VARYING;
-	   vr.min = zero;
-	   vr.max = zero;
+	   vr.min = vr.max = wi::zero (INT_TYPE_SIZE);
 	 }
        ts->m_vr->quick_push (vr);
      }

gcc/sreal.h

@@ -104,14 +104,20 @@ public:
   /* Global minimum sreal can hold.  */
   inline static sreal min ()
   {
-    static sreal min = sreal (-SREAL_MAX_SIG, SREAL_MAX_EXP);
+    sreal min;
+    /* This never needs normalization.  */
+    min.m_sig = -SREAL_MAX_SIG;
+    min.m_exp = SREAL_MAX_EXP;
     return min;
   }
 
   /* Global minimum sreal can hold.  */
   inline static sreal max ()
   {
-    static sreal max = sreal (SREAL_MAX_SIG, SREAL_MAX_EXP);
+    sreal max;
+    /* This never needs normalization.  */
+    max.m_sig = SREAL_MAX_SIG;
+    max.m_exp = SREAL_MAX_EXP;
     return max;
   }
 

gcc/tree-ssa-sccvn.c

@@ -1786,8 +1786,7 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_,
   gimple *def_stmt = SSA_NAME_DEF_STMT (vuse);
   tree base = ao_ref_base (ref);
   HOST_WIDE_INT offset, maxsize;
-  static vec<vn_reference_op_s>
-    lhs_ops = vNULL;
+  static vec<vn_reference_op_s> lhs_ops;
   ao_ref lhs_ref;
   bool lhs_ref_ok = false;