[multiple changes]

2016-04-27  Hristian Kirtchev  <kirtchev@adacore.com>

	* aspects.ads Aspects Export and Import do not require delay. They
	were classified as delayed aspects, but treated as non-delayed
	by the analysis of aspects.
	* freeze.adb (Copy_Import_Pragma): New routine.
	(Wrap_Imported_Subprogram): Copy the import pragma by first
	resetting all semantic fields to avoid an infinite loop when
	performing the copy.
	* sem_ch13.adb (Analyze_Aspects_At_Freeze_Point): Add
	comment on the processing of aspects Export and Import
	at the freeze point.
	(Analyze_Aspect_Convention: New routine.
	(Analyze_Aspect_Export_Import): New routine.
	(Analyze_Aspect_External_Link_Name): New routine.
	(Analyze_Aspect_External_Or_Link_Name): Removed.
	(Analyze_Aspect_Specifications): Factor out the analysis of
	aspects Convention, Export, External_Name, Import, and Link_Name
	in their respective routines.  Aspects Export and Import should
	not generate a Boolean pragma because their corresponding pragmas
	have a very different syntax.
	(Build_Export_Import_Pragma): New routine.
	(Get_Interfacing_Aspects): New routine.

2016-04-27  Eric Botcazou  <ebotcazou@adacore.com>

	* inline.adb (Add_Inlined_Body): Overhaul implementation,
	robustify handling of -gnatn1, add special treatment for
	expression functions.

2016-04-27  Doug Rupp  <rupp@adacore.com>

	* g-traceb.ads: Update comment.
	* exp_ch2.adb: minor style fix in object declaration

From-SVN: r235483

gcc/ada/ChangeLog

 2016-04-27  Hristian Kirtchev  <kirtchev@adacore.com>
 
+	* aspects.ads Aspects Export and Import do not require delay. They
+	were classified as delayed aspects, but treated as non-delayed
+	by the analysis of aspects.
+	* freeze.adb (Copy_Import_Pragma): New routine.
+	(Wrap_Imported_Subprogram): Copy the import pragma by first
+	resetting all semantic fields to avoid an infinite loop when
+	performing the copy.
+	* sem_ch13.adb (Analyze_Aspects_At_Freeze_Point): Add
+	comment on the processing of aspects Export and Import
+	at the freeze point.
+	(Analyze_Aspect_Convention: New routine.
+	(Analyze_Aspect_Export_Import): New routine.
+	(Analyze_Aspect_External_Link_Name): New routine.
+	(Analyze_Aspect_External_Or_Link_Name): Removed.
+	(Analyze_Aspect_Specifications): Factor out the analysis of
+	aspects Convention, Export, External_Name, Import, and Link_Name
+	in their respective routines.  Aspects Export and Import should
+	not generate a Boolean pragma because their corresponding pragmas
+	have a very different syntax.
+	(Build_Export_Import_Pragma): New routine.
+	(Get_Interfacing_Aspects): New routine.
+
+2016-04-27  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* inline.adb (Add_Inlined_Body): Overhaul implementation,
+	robustify handling of -gnatn1, add special treatment for
+	expression functions.
+
+2016-04-27  Doug Rupp  <rupp@adacore.com>
+
+	* g-traceb.ads: Update comment.
+	* exp_ch2.adb: minor style fix in object declaration
+
+2016-04-27  Hristian Kirtchev  <kirtchev@adacore.com>
+
 	* sem_elab.adb (Check_Internal_Call): Do not
 	consider a call when it appears within pragma Initial_Condition
 	since the pragma is part of the elaboration statements of a

gcc/ada/aspects.ads

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 2010-2015, Free Software Foundation, Inc.         --
+--          Copyright (C) 2010-2016, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -652,12 +652,10 @@ package Aspects is
       Aspect_Dispatching_Domain           => Always_Delay,
       Aspect_Dynamic_Predicate            => Always_Delay,
       Aspect_Elaborate_Body               => Always_Delay,
-      Aspect_Export                       => Always_Delay,
       Aspect_External_Name                => Always_Delay,
       Aspect_External_Tag                 => Always_Delay,
       Aspect_Favor_Top_Level              => Always_Delay,
       Aspect_Implicit_Dereference         => Always_Delay,
-      Aspect_Import                       => Always_Delay,
       Aspect_Independent                  => Always_Delay,
       Aspect_Independent_Components       => Always_Delay,
       Aspect_Inline                       => Always_Delay,
@@ -726,9 +724,11 @@ package Aspects is
       Aspect_Disable_Controlled           => Never_Delay,
       Aspect_Effective_Reads              => Never_Delay,
       Aspect_Effective_Writes             => Never_Delay,
+      Aspect_Export                       => Never_Delay,
       Aspect_Extensions_Visible           => Never_Delay,
       Aspect_Ghost                        => Never_Delay,
       Aspect_Global                       => Never_Delay,
+      Aspect_Import                       => Never_Delay,
       Aspect_Initial_Condition            => Never_Delay,
       Aspect_Initializes                  => Never_Delay,
       Aspect_No_Elaboration_Code_All      => Never_Delay,

gcc/ada/freeze.adb

@@ -4676,14 +4676,65 @@ package body Freeze is
       --  for the subprogram body that calls the inner procedure.
 
       procedure Wrap_Imported_Subprogram (E : Entity_Id) is
+         function Copy_Import_Pragma return Node_Id;
+         --  Obtain a copy of the Import_Pragma which belongs to subprogram E
+
+         ------------------------
+         -- Copy_Import_Pragma --
+         ------------------------
+
+         function Copy_Import_Pragma return Node_Id is
+
+            --  The subprogram should have an import pragma, otherwise it does
+            --  need a wrapper.
+
+            Prag : constant Node_Id := Import_Pragma (E);
+            pragma Assert (Present (Prag));
+
+            --  Save all semantic fields of the pragma
+
+            Save_Asp  : constant Node_Id := Corresponding_Aspect (Prag);
+            Save_From : constant Boolean := From_Aspect_Specification (Prag);
+            Save_Prag : constant Node_Id := Next_Pragma (Prag);
+            Save_Rep  : constant Node_Id := Next_Rep_Item (Prag);
+
+            Result : Node_Id;
+
+         begin
+            --  Reset all semantic fields. This avoids a potential infinite
+            --  loop when the pragma comes from an aspect as the duplication
+            --  will copy the aspect, then copy the corresponding pragma and
+            --  so on.
+
+            Set_Corresponding_Aspect      (Prag, Empty);
+            Set_From_Aspect_Specification (Prag, False);
+            Set_Next_Pragma               (Prag, Empty);
+            Set_Next_Rep_Item             (Prag, Empty);
+
+            Result := Copy_Separate_Tree (Prag);
+
+            --  Restore the original semantic fields
+
+            Set_Corresponding_Aspect      (Prag, Save_Asp);
+            Set_From_Aspect_Specification (Prag, Save_From);
+            Set_Next_Pragma               (Prag, Save_Prag);
+            Set_Next_Rep_Item             (Prag, Save_Rep);
+
+            return Result;
+         end Copy_Import_Pragma;
+
+         --  Local variables
+
          Loc   : constant Source_Ptr := Sloc (E);
          CE    : constant Name_Id    := Chars (E);
-         Spec  : Node_Id;
-         Parms : List_Id;
-         Stmt  : Node_Id;
-         Iprag : Node_Id;
          Bod   : Node_Id;
          Forml : Entity_Id;
+         Parms : List_Id;
+         Prag  : Node_Id;
+         Spec  : Node_Id;
+         Stmt  : Node_Id;
+
+      --  Start of processing for Wrap_Imported_Subprogram
 
       begin
          --  Nothing to do if not imported
@@ -4706,18 +4757,14 @@ package body Freeze is
             --  generates the right visibility, and that is exactly what the
             --  calls to Copy_Separate_Tree give us.
 
-            --  Acquire copy of Inline pragma, and indicate that it does not
-            --  come from an aspect, as it applies to an internal entity.
-
-            Iprag := Copy_Separate_Tree (Import_Pragma (E));
-            Set_From_Aspect_Specification (Iprag, False);
+            Prag := Copy_Import_Pragma;
 
             --  Fix up spec to be not imported any more
 
-            Set_Is_Imported    (E, False);
-            Set_Interface_Name (E, Empty);
             Set_Has_Completion (E, False);
             Set_Import_Pragma  (E, Empty);
+            Set_Interface_Name (E, Empty);
+            Set_Is_Imported    (E, False);
 
             --  Grab the subprogram declaration and specification
 
@@ -4757,9 +4804,8 @@ package body Freeze is
                   Copy_Separate_Tree (Spec),
                 Declarations               => New_List (
                   Make_Subprogram_Declaration (Loc,
-                    Specification =>
-                      Copy_Separate_Tree (Spec)),
-                    Iprag),
+                    Specification => Copy_Separate_Tree (Spec)),
+                  Prag),
                 Handled_Statement_Sequence =>
                   Make_Handled_Sequence_Of_Statements (Loc,
                     Statements => New_List (Stmt),

gcc/ada/g-traceb.ads

@@ -62,6 +62,7 @@
 --     GNU/Linux PowerPC
 --     LynxOS x86
 --     LynxOS 178 xcoff PowerPC
+--     LynxOS 178 elf PowerPC
 --     Solaris x86
 --     Solaris sparc
 --     VxWorks PowerPC

gcc/ada/inline.adb

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2015, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -390,6 +390,40 @@ package body Inline is
          return;
       end if;
 
+      --  Find out whether the call must be inlined. Unless the result is
+      --  Dont_Inline, Must_Inline also creates an edge for the call in the
+      --  callgraph; however, it will not be activated until after Is_Called
+      --  is set on the subprogram.
+
+      Level := Must_Inline;
+
+      if Level = Dont_Inline then
+         return;
+      end if;
+
+      --  If the call was generated by the compiler and is to a subprogram in
+      --  a run-time unit, we need to suppress debugging information for it,
+      --  so that the code that is eventually inlined will not affect the
+      --  debugging of the program. We do not do it if the call comes from
+      --  source because, even if the call is inlined, the user may expect it
+      --  to be present in the debugging information.
+
+      if not Comes_From_Source (N)
+        and then In_Extended_Main_Source_Unit (N)
+        and then
+          Is_Predefined_File_Name (Unit_File_Name (Get_Source_Unit (E)))
+      then
+         Set_Needs_Debug_Info (E, False);
+      end if;
+
+      --  If the subprogram is an expression function, then there is no need to
+      --  load any package body since the body of the function is in the spec.
+
+      if Is_Expression_Function (E) then
+         Set_Is_Called (E);
+         return;
+      end if;
+
       --  Find unit containing E, and add to list of inlined bodies if needed.
       --  If the body is already present, no need to load any other unit. This
       --  is the case for an initialization procedure, which appears in the
@@ -403,23 +437,11 @@ package body Inline is
       --  no enclosing package to retrieve. In this case, it is the body of
       --  the function that will have to be loaded.
 
-      Level := Must_Inline;
-
-      if Level /= Dont_Inline then
       declare
          Pack : constant Entity_Id := Get_Code_Unit_Entity (E);
 
       begin
-            --  Ensure that Analyze_Inlined_Bodies will be invoked after
-            --  completing the analysis of the current unit.
-
-            Inline_Processing_Required := True;
-
          if Pack = E then
-
-               --  Library-level inlined function. Add function itself to
-               --  list of needed units.
-
             Set_Is_Called (E);
             Inlined_Bodies.Increment_Last;
             Inlined_Bodies.Table (Inlined_Bodies.Last) := E;
@@ -435,22 +457,16 @@ package body Inline is
             --  case the subprogram body appears in the same unit that
             --  declares the type, and that body is visible to the back end.
             --  Do not inline it either if it is in the main unit.
-
-               elsif Level = Inline_Package
-                 and then not Is_Inlined (Pack)
-                 and then not Is_Internal (E)
-                 and then not In_Main_Unit_Or_Subunit (Pack)
-               then
-                  Set_Is_Inlined (Pack);
-                  Inlined_Bodies.Increment_Last;
-                  Inlined_Bodies.Table (Inlined_Bodies.Last) := Pack;
-
             --  Extend the -gnatn2 processing to -gnatn1 for Inline_Always
             --  calls if the back-end takes care of inlining the call.
 
-               elsif Level = Inline_Call
+            elsif (Level = Inline_Package
+                    or else (Level = Inline_Call
                               and then Has_Pragma_Inline_Always (E)
-                 and then Back_End_Inlining
+                              and then Back_End_Inlining))
+              and then not Is_Inlined (Pack)
+              and then not Is_Internal (E)
+              and then not In_Main_Unit_Or_Subunit (Pack)
             then
                Set_Is_Inlined (Pack);
                Inlined_Bodies.Increment_Last;
@@ -458,22 +474,11 @@ package body Inline is
             end if;
          end if;
 
-            --  If the call was generated by the compiler and is to a function
-            --  in a run-time unit, we need to suppress debugging information
-            --  for it, so that the code that is eventually inlined will not
-            --  affect debugging of the program. We do not do it if the call
-            --  comes from source because, even if the call is inlined, the
-            --  user may expect it to be present in the debugging information.
+         --  Ensure that Analyze_Inlined_Bodies will be invoked after
+         --  completing the analysis of the current unit.
 
-            if not Comes_From_Source (N)
-               and then In_Extended_Main_Source_Unit (N)
-               and then
-                 Is_Predefined_File_Name (Unit_File_Name (Get_Source_Unit (E)))
-            then
-               Set_Needs_Debug_Info (E, False);
-            end if;
+         Inline_Processing_Required := True;
       end;
-      end if;
    end Add_Inlined_Body;
 
    ----------------------------