use more get_range_query

Hi,

For "get_global_range_query" SSA_NAME_RANGE_INFO can be queried.
For "get_range_query", it could get more context-aware range info.
And look at the implementation of "get_range_query",  it returns
global range if no local fun info.

So, if not quering for SSA_NAME and not chaning the IL, it would
be ok to use get_range_query to replace get_global_range_query.

Patch https://gcc.gnu.org/pipermail/gcc-patches/2023-September/630389.html,
Uses get_range_query could handle more cases.

Compare with previous version:
https://gcc.gnu.org/pipermail/gcc-patches/2023-October/632401.html
This patch remove some unsafe replacement.

Pass bootstrap & regtest on ppc64{,le} and x86_64.
Is this ok for trunk.

BR,
Jeff (Jiufu Guo)

gcc/ChangeLog:

	* fold-const.cc (expr_not_equal_to): Replace get_global_range_query
	by get_range_query.
	* gimple-fold.cc (size_must_be_zero_p): Likewise.
	* gimple-range-fold.cc (fur_source::fur_source): Likewise.
	* gimple-ssa-warn-access.cc (check_nul_terminated_array): Likewise.
	* tree-dfa.cc (get_ref_base_and_extent): Likewise.

gcc/fold-const.cc

@@ -10877,11 +10877,7 @@ expr_not_equal_to (tree t, const wide_int &w)
       if (!INTEGRAL_TYPE_P (TREE_TYPE (t)))
 	return false;
 
-      if (cfun)
-	get_range_query (cfun)->range_of_expr (vr, t);
-      else
-	get_global_range_query ()->range_of_expr (vr, t);
-
+      get_range_query (cfun)->range_of_expr (vr, t);
       if (!vr.undefined_p () && !vr.contains_p (w))
 	return true;
       /* If T has some known zero bits and W has any of those bits set,

gcc/gimple-fold.cc

@@ -876,10 +876,8 @@ size_must_be_zero_p (tree size)
   wide_int zero = wi::zero (TYPE_PRECISION (type));
   value_range valid_range (type, zero, ssize_max);
   value_range vr;
-  if (cfun)
-    get_range_query (cfun)->range_of_expr (vr, size);
-  else
-    get_global_range_query ()->range_of_expr (vr, size);
+  get_range_query (cfun)->range_of_expr (vr, size);
+
   if (vr.undefined_p ())
     vr.set_varying (TREE_TYPE (size));
   vr.intersect (valid_range);

gcc/gimple-range-fold.cc

@@ -50,10 +50,8 @@ fur_source::fur_source (range_query *q)
 {
   if (q)
     m_query = q;
-  else if (cfun)
-    m_query = get_range_query (cfun);
   else
-    m_query = get_global_range_query ();
+    m_query = get_range_query (cfun);
   m_gori = NULL;
 }
 

gcc/gimple-ssa-warn-access.cc

@@ -332,7 +332,7 @@ check_nul_terminated_array (GimpleOrTree expr, tree src, tree bound)
     {
       Value_Range r (TREE_TYPE (bound));
 
-      get_global_range_query ()->range_of_expr (r, bound);
+      get_range_query (cfun)->range_of_expr (r, bound);
 
       if (r.undefined_p () || r.varying_p ())
 	return true;

gcc/tree-dfa.cc

@@ -531,10 +531,7 @@ get_ref_base_and_extent (tree exp, poly_int64_pod *poffset,
 
 		value_range vr;
 		range_query *query;
-		if (cfun)
-		  query = get_range_query (cfun);
-		else
-		  query = get_global_range_query ();
+		query = get_range_query (cfun);
 
 		if (TREE_CODE (index) == SSA_NAME
 		    && (low_bound = array_ref_low_bound (exp),