exp_ch3.adb (Expand_Freeze_Class_Wide_Type): Do not create TSS routine…

exp_ch3.adb (Expand_Freeze_Class_Wide_Type): Do not create TSS routine Finalize_Address when compiling in Alfa mode.

2011-09-02  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch3.adb (Expand_Freeze_Class_Wide_Type): Do not create
	TSS routine Finalize_Address when compiling in Alfa mode.
	(Expand_Freeze_Record_Type): Do not create TSS routine
	Finalize_Address when compiling in Alfa mode.
	* exp_ch4.adb (Expand_Allocator_Expression): Do not produce a
	call to Set_Finalize_Address in Alfa mode because Finalize_Address is
	not built.
	(Expand_N_Allocator): Do not produce a call to
	Set_Finalize_Address in Alfa mode because Finalize_Address is not built.
	* exp_ch6.adb (Make_Build_In_Place_Call_In_Allocator): Do not
	produce a call to primitive Set_Finalize_Address in Alfa mode because
	Finalize_Address is not built.
	* exp_ch7.adb (Build_Finalization_Master): Do not create
	finalization masters in Afa mode since they are not needed.
	(Build_Finalizer): Do not create scope and library-level
	finalizers in Alfa mode since they are not needed.
	* exp_util.adb (Build_Allocate_Deallocate_Proc): Do not expand
	"new" and "free" when applied to controlled objects in Alfa mode since
	this is not needed.

From-SVN: r178456

gcc/ada/ChangeLog

+2011-09-02  Hristian Kirtchev  <kirtchev@adacore.com>
+
+	* exp_ch3.adb (Expand_Freeze_Class_Wide_Type): Do not create
+	TSS routine Finalize_Address when compiling in Alfa mode.
+	(Expand_Freeze_Record_Type): Do not create TSS routine
+	Finalize_Address when compiling in Alfa mode.
+	* exp_ch4.adb (Expand_Allocator_Expression): Do not produce a
+	call to Set_Finalize_Address in Alfa mode because Finalize_Address is
+	not built.
+	(Expand_N_Allocator): Do not produce a call to
+	Set_Finalize_Address in Alfa mode because Finalize_Address is not built.
+	* exp_ch6.adb (Make_Build_In_Place_Call_In_Allocator): Do not
+	produce a call to primitive Set_Finalize_Address in Alfa mode because
+	Finalize_Address is not built.
+	* exp_ch7.adb (Build_Finalization_Master): Do not create
+	finalization masters in Afa mode since they are not needed.
+	(Build_Finalizer): Do not create scope and library-level
+	finalizers in Alfa mode since they are not needed.
+	* exp_util.adb (Build_Allocate_Deallocate_Proc): Do not expand
+	"new" and "free" when applied to controlled objects in Alfa mode since
+	this is not needed.
+
 2011-09-02  Vincent Celier  <celier@adacore.com>
 
 	* prj-nmsc.db: (Check_Stand_Alone_Library): For SALs, allow

gcc/ada/exp_ch3.adb

@@ -5634,6 +5634,12 @@ package body Exp_Ch3 is
 
       elsif CodePeer_Mode then
          return;
+
+      --  Do not create TSS routine Finalize_Address when compiling in Alfa
+      --  mode because it is not necessary and results in useless expansion.
+
+      elsif Alfa_Mode then
+         return;
       end if;
 
       --  Create the body of TSS primitive Finalize_Address. This automatically
@@ -6379,11 +6385,14 @@ package body Exp_Ch3 is
 
             --  Create the body of TSS primitive Finalize_Address. This must
             --  be done before the bodies of all predefined primitives are
-            --  created. If Def_Id is limited, Stream_Input and Streap_Read
-            --  may produce build-in-place allocations and for that the
-            --  expander needs Finalize_Address.
+            --  created. If Def_Id is limited, Stream_Input and Stream_Read
+            --  may produce build-in-place allocations and for those the
+            --  expander needs Finalize_Address. Do not create the body of
+            --  Finalize_Address in Alfa mode since it is not needed.
 
-            Make_Finalize_Address_Body (Def_Id);
+            if not Alfa_Mode then
+               Make_Finalize_Address_Body (Def_Id);
+            end if;
 
             Predef_List := Predefined_Primitive_Bodies (Def_Id, Renamed_Eq);
             Append_Freeze_Actions (Def_Id, Predef_List);

gcc/ada/exp_ch4.adb

@@ -1149,12 +1149,19 @@ package body Exp_Ch4 is
             --  Generate:
             --    Set_Finalize_Address (<PtrT>FM, <T>FD'Unrestricted_Access);
 
-            --  Since .NET/JVM compilers do not support address arithmetic,
-            --  this call is skipped. The same is done for CodePeer because
-            --  primitive Finalize_Address is never generated. Do not create
-            --  this call if there is no allocator available any more.
+            --  Do not generate this call in the following cases:
+            --
+            --    * .NET/JVM - these targets do not support address arithmetic
+            --    and unchecked conversion, key elements of Finalize_Address.
+            --
+            --    * Alfa mode - the call is useless and results in unwanted
+            --    expansion.
+            --
+            --    * CodePeer mode - TSS primitive Finalize_Address is not
+            --    created in this mode.
 
             if VM_Target = No_VM
+              and then not Alfa_Mode
               and then not CodePeer_Mode
               and then Present (Finalization_Master (PtrT))
               and then Present (Temp_Decl)
@@ -3481,9 +3488,12 @@ package body Exp_Ch4 is
          end if;
 
          --  The finalization master must be inserted and analyzed as part of
-         --  the current semantic unit.
+         --  the current semantic unit. This form of expansion is not carried
+         --  out in Alfa mode because it is useless.
 
-         if No (Finalization_Master (PtrT)) then
+         if No (Finalization_Master (PtrT))
+           and then not Alfa_Mode
+         then
             Set_Finalization_Master (PtrT, Current_Anonymous_Master);
          end if;
       end if;
@@ -3979,10 +3989,17 @@ package body Exp_Ch4 is
                      --    Set_Finalize_Address
                      --      (<PtrT>FM, <T>FD'Unrestricted_Access);
 
-                     --  Do not generate the above for CodePeer compilations
-                     --  because primitive Finalize_Address is never built.
+                     --  Do not generate this call in the following cases:
+                     --
+                     --    * Alfa mode - the call is useless and results in
+                     --    unwanted expansion.
+                     --
+                     --    * CodePeer mode - TSS primitive Finalize_Address is
+                     --    not created in this mode.
 
-                     elsif not CodePeer_Mode then
+                     elsif not Alfa_Mode
+                       and then not CodePeer_Mode
+                     then
                         Insert_Action (N,
                           Make_Set_Finalize_Address_Call
                             (Loc     => Loc,

gcc/ada/exp_ch6.adb

@@ -6519,7 +6519,7 @@ package body Exp_Ch6 is
 
          begin
             --  Ada 2005 (AI-251): In class-wide interface objects we displace
-            --  "this" to reference the base of the object --- required to get
+            --  "this" to reference the base of the object required to get
             --  access to the TSD of the object.
 
             if Is_Class_Wide_Type (Etype (Exp))
@@ -7245,10 +7245,14 @@ package body Exp_Ch6 is
          then
             null;
 
-         --  Do not generate the call to Make_Set_Finalize_Address for
-         --  CodePeer compilations because Finalize_Address is never built.
+         --  Do not generate the call to Set_Finalize_Address in Alfa mode
+         --  because it is not necessary and results in unwanted expansion.
+         --  This expansion is also not carried out in CodePeer mode because
+         --  Finalize_Address is never built.
 
-         elsif not CodePeer_Mode then
+         elsif not Alfa_Mode
+           and then not CodePeer_Mode
+         then
             Insert_Action (Allocator,
               Make_Set_Finalize_Address_Call (Loc,
                 Typ     => Etype (Function_Id),

gcc/ada/exp_ch7.adb

@@ -888,6 +888,12 @@ package body Exp_Ch7 is
         and then not Is_Controlled (Desig_Typ)
       then
          return;
+
+      --  Do not create finalization masters in Alfa mode because they result
+      --  in unwanted expansion.
+
+      elsif Alfa_Mode then
+         return;
       end if;
 
       declare
@@ -2689,6 +2695,13 @@ package body Exp_Ch7 is
    begin
       Fin_Id := Empty;
 
+      --  Do not perform this expansion in Alfa mode because it is not
+      --  necessary.
+
+      if Alfa_Mode then
+         return;
+      end if;
+
       --  Step 1: Extract all lists which may contain controlled objects or
       --  library-level tagged types.
 
@@ -2844,6 +2857,13 @@ package body Exp_Ch7 is
       --  which belongs to a protected type.
 
    begin
+      --  Do not perform this expansion in Alfa mode because we do not create
+      --  finalizers in the first place.
+
+      if Alfa_Mode then
+         return;
+      end if;
+
       --  The At_End handler should have been assimilated by the finalizer
 
       pragma Assert (No (At_End_Proc (HSS)));

gcc/ada/exp_util.adb

@@ -480,6 +480,13 @@ package body Exp_Util is
    --  Start of processing for Build_Allocate_Deallocate_Proc
 
    begin
+      --  Do not perform this expansion in Alfa mode because it is not
+      --  necessary.
+
+      if Alfa_Mode then
+         return;
+      end if;
+
       --  Obtain the attributes of the allocation / deallocation
 
       if Nkind (N) = N_Free_Statement then