trans.c (Loop_Statement_to_gnu): Use gnat_type_for_size directly to obtain an…

trans.c (Loop_Statement_to_gnu): Use gnat_type_for_size directly to obtain an unsigned version of the base type.

	* gcc-interface/trans.c (Loop_Statement_to_gnu): Use gnat_type_for_size
	directly to obtain an unsigned version of the base type.

From-SVN: r192669

gcc/ada/ChangeLog

 2012-10-22  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* gcc-interface/trans.c (Loop_Statement_to_gnu): Use gnat_type_for_size
+	directly to obtain an unsigned version of the base type.
+
+2012-10-22  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Out_Parameter>: Do not
 	generate the special PARM_DECL for an Out parameter in LTO mode.
 

gcc/ada/gcc-interface/trans.c

@@ -2431,7 +2431,8 @@ Loop_Statement_to_gnu (Node_Id gnat_node)
 	    {
 	      if (TYPE_PRECISION (gnu_base_type)
 		  > TYPE_PRECISION (size_type_node))
-		gnu_base_type = gnat_unsigned_type (gnu_base_type);
+		gnu_base_type
+		  = gnat_type_for_size (TYPE_PRECISION (gnu_base_type), 1);
 	      else
 		gnu_base_type = size_type_node;
 

gcc/testsuite/ChangeLog

+2012-10-22  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gnat.dg/modular4.adb: New test.
+	* gnat.dg/modular4_pkg.ads: New helper.
+
 2012-10-21  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gnat.dg/specs/atomic1.ads: XFAIL on MIPS.

gcc/testsuite/gnat.dg/modular4.adb

+-- { dg-do compile }
+-- { dg-options "-O" }
+
+with Modular4_Pkg; use Modular4_Pkg;
+
+procedure Modular4 is
+begin
+  for I in Zero .. F mod 8 loop
+    raise Program_Error;
+  end loop;
+end;

gcc/testsuite/gnat.dg/modular4_pkg.ads

+package Modular4_Pkg is
+
+   type Word is mod 2**48;
+
+   Zero : constant Word := 0;
+
+   function F return Word;
+
+end Modular4_Pkg;