[Ada] Do not use maximal values from System in runtime units

[Ada] Do not use maximal values from System in runtime units

[Pierre-Marie de Rodat]

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This changes a few runtime units to use explicit bounds based on
Long_Long_Integer instead of maximal values from System, which may
become very large when 128-bit types are supported.

They are used for index types and memory byte counts and, therefore,
the magnitude provided by Long_Long_Integer is sufficient for them.

No functional changes.

Tested on x86_64-pc-linux-gnu, committed on trunk

gcc/ada/

	* libgnat/a-cfinve.adb (Int): Use subtype of Long_Long_Integer.
	* libgnat/a-cofove.adb (Int): Likewise.
	* libgnat/a-cgcaso.adb (T): Likewise.
	* libgnat/a-cogeso.adb (T): Likewise.
	* libgnat/g-debpoo.ads (Byte_Count): Use Long_Long_Integer'Size.

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diff --git a/gcc/ada/libgnat/a-cfinve.adb b/gcc/ada/libgnat/a-cfinve.adb
--- a/gcc/ada/libgnat/a-cfinve.adb
+++ b/gcc/ada/libgnat/a-cfinve.adb
@@ -40,7 +40,7 @@ is
    --  When growing a container, multiply current capacity by this. Doubling
    --  leads to amortized linear-time copying.
 
-   type Int is range System.Min_Int .. System.Max_Int;
+   subtype Int is Long_Long_Integer;
 
    procedure Free is
      new Ada.Unchecked_Deallocation (Elements_Array, Elements_Array_Ptr);


diff --git a/gcc/ada/libgnat/a-cgcaso.adb b/gcc/ada/libgnat/a-cgcaso.adb
--- a/gcc/ada/libgnat/a-cgcaso.adb
+++ b/gcc/ada/libgnat/a-cgcaso.adb
@@ -29,12 +29,10 @@
 
 --  This algorithm was adapted from GNAT.Heap_Sort_G (see g-hesorg.ad[sb])
 
-with System;
-
 procedure Ada.Containers.Generic_Constrained_Array_Sort
   (Container : in out Array_Type)
 is
-   type T is range System.Min_Int .. System.Max_Int;
+   subtype T is Long_Long_Integer;
 
    function To_Index (J : T) return Index_Type;
    pragma Inline (To_Index);


diff --git a/gcc/ada/libgnat/a-cofove.adb b/gcc/ada/libgnat/a-cofove.adb
--- a/gcc/ada/libgnat/a-cofove.adb
+++ b/gcc/ada/libgnat/a-cofove.adb
@@ -33,7 +33,7 @@ package body Ada.Containers.Formal_Vectors with
   SPARK_Mode => Off
 is
 
-   type Int is range System.Min_Int .. System.Max_Int;
+   subtype Int is Long_Long_Integer;
 
    function To_Array_Index (Index : Index_Type'Base) return Count_Type'Base;
 


diff --git a/gcc/ada/libgnat/a-cogeso.adb b/gcc/ada/libgnat/a-cogeso.adb
--- a/gcc/ada/libgnat/a-cogeso.adb
+++ b/gcc/ada/libgnat/a-cogeso.adb
@@ -29,10 +29,8 @@
 
 --  This algorithm was adapted from GNAT.Heap_Sort (see g-heasor.ad[sb])
 
-with System;
-
 procedure Ada.Containers.Generic_Sort (First, Last : Index_Type'Base) is
-   type T is range System.Min_Int .. System.Max_Int;
+   subtype T is Long_Long_Integer;
 
    function To_Index (J : T) return Index_Type;
    pragma Inline (To_Index);


diff --git a/gcc/ada/libgnat/g-debpoo.ads b/gcc/ada/libgnat/g-debpoo.ads
--- a/gcc/ada/libgnat/g-debpoo.ads
+++ b/gcc/ada/libgnat/g-debpoo.ads
@@ -299,7 +299,7 @@ package GNAT.Debug_Pools is
    --  If Valid is True, Size_In_Storage_Elements is set to the size of this
    --  chunk of memory.
 
-   type Byte_Count is mod System.Max_Binary_Modulus;
+   type Byte_Count is mod 2 ** Long_Long_Integer'Size;
    --  Type used for maintaining byte counts, needs to be large enough to
    --  to accommodate counts allowing for repeated use of the same memory.