ipa-icf.c (sem_function::merge): Do not create a wrapper also if the original function needs a static chain.

* ipa-icf.c (sem_function::merge): Do not create a wrapper also if the
	original function needs a static chain.

From-SVN: r242354

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2016-11-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* ipa-icf.c (sem_function::merge): Do not create a wrapper also if the
+	original function needs a static chain.
+
 2016-11-13  David Edelsohn  <dje.gcc@gmail.com>
 
 	PR target/78336

gcc/ipa-icf.c

@@ -1186,11 +1186,12 @@ sem_function::merge (sem_item *alias_item)
 	    fprintf (dump_file,
 		     "Wrapper cannot be created because of COMDAT\n");
 	}
-      else if (DECL_STATIC_CHAIN (alias->decl))
+      else if (DECL_STATIC_CHAIN (alias->decl)
+	       || DECL_STATIC_CHAIN (original->decl))
         {
 	  if (dump_file)
 	    fprintf (dump_file,
-		     "Can not create wrapper of nested functions.\n");
+		     "Cannot create wrapper of nested function.\n");
         }
       /* TODO: We can also deal with variadic functions never calling
 	 VA_START.  */

gcc/testsuite/ChangeLog

@@ -1,3 +1,9 @@
+2016-11-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gnat.dg/lto21.adb: New test.
+	* gnat.dg/lto21_pkg1.ads: New helper.
+	* gnat.dg/lto21_pkg2.ad[sb]: Likewise.
+
 2016-11-13  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/60952

gcc/testsuite/gnat.dg/lto21.adb

@@ -0,0 +1,10 @@
+-- { dg-do run }
+-- { dg-options "-O3 -flto" { target lto } }
+
+with Lto21_Pkg1;
+with Lto21_Pkg2; use Lto21_Pkg2;
+
+procedure Lto21 is
+begin
+   Proc;
+end;

gcc/testsuite/gnat.dg/lto21_pkg1.ads

@@ -0,0 +1,10 @@
+with Ada.Containers.Vectors;
+with Lto21_Pkg2;
+
+package Lto21_Pkg1 is
+
+   pragma Suppress (Tampering_Check);
+
+   package Vect1 is new Ada.Containers.Vectors (Positive, Natural);
+
+end Lto21_Pkg1;

gcc/testsuite/gnat.dg/lto21_pkg2.adb

@@ -0,0 +1,30 @@
+with Ada.Containers; use Ada.Containers;
+with Ada.Containers.Hashed_Maps;
+with Ada.Containers.Vectors;
+
+package body Lto21_Pkg2 is
+
+   pragma Suppress (Tampering_Check);
+
+   procedure Proc is
+
+      function Hash (Syd : Natural) return Hash_Type is (Hash_Type'Mod (Syd));
+
+      package Vect2 is new Vectors (Positive, Natural);
+
+      package Maps is
+        new Hashed_Maps (Natural, Vect2.Vector, Hash, "=", Vect2."=");
+
+      procedure Nested (M : Maps.Map) is
+         use Maps;
+         procedure Inner (Position : Cursor) is null;
+      begin
+         Iterate (M, Inner'Access);
+      end;
+
+      M : Maps.Map;
+   begin
+      Nested (M);
+   end;
+
+end Lto21_Pkg2;

gcc/testsuite/gnat.dg/lto21_pkg2.ads

@@ -0,0 +1,5 @@
+package Lto21_Pkg2 is
+
+   procedure Proc;
+
+end Lto21_Pkg2;