Sync top level files with gcc.

	Import these patches from the GCC mainline:

	2016-01-12  Andris Pavenis  <andris.pavenis@iki.fi>

	* configure.ac: Enable LTO for DJGPP
	* configure: Regenerate

	2016-01-24  Mikhail Maltsev  <maltsevm@gmail.com>

	PR bootstrap/69329
	* Makefile.tpl (BASE_FLAGS_TO_PASS): Add LSAN_OPTIONS.
	* Makefile.in: Regenerate.

	2016-01-25  Aditya Kumar  <aditya.k7@samsung.com>
	            Sebastian Pop  <s.pop@samsung.com>

	* Makefile.in: Regenerate.
	* Makefile.tpl: Export ISLVER.
	* configure: Regenerate.
	* config/isl.m4: Detect isl-0.15.

	2016-01-29  Sebastian Pop  <s.pop@samsung.com>

	* config/isl.m4: Add comments about isl-0.16.
	* configure: Regenerate.

6 files changed, 92 insertions, 15 deletions

diff --git a/ChangeLog b/ChangeLog
index fb76695..6c663ac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,31 @@
+2016-02-10  Nick Clifton  <nickc@redhat.com>
+
+	Import these patches from the GCC mainline:
+
+	2016-01-12  Andris Pavenis  <andris.pavenis@iki.fi>
+
+	* configure.ac: Enable LTO for DJGPP
+	* configure: Regenerate
+
+	2016-01-24  Mikhail Maltsev  <maltsevm@gmail.com>
+
+	PR bootstrap/69329
+	* Makefile.tpl (BASE_FLAGS_TO_PASS): Add LSAN_OPTIONS.
+	* Makefile.in: Regenerate.
+
+	2016-01-25  Aditya Kumar  <aditya.k7@samsung.com>
+	            Sebastian Pop  <s.pop@samsung.com>
+
+	* Makefile.in: Regenerate.
+	* Makefile.tpl: Export ISLVER.
+	* configure: Regenerate.
+	* config/isl.m4: Detect isl-0.15.
+
+	2016-01-29  Sebastian Pop  <s.pop@samsung.com>
+
+	* config/isl.m4: Add comments about isl-0.16.
+	* configure: Regenerate.
+
 2016-01-12  H.J. Lu  <hongjiu.lu@intel.com>
 
 	Sync with GCC
diff --git a/Makefile.in b/Makefile.in
index 2733c4d..1d01a62 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -3,7 +3,8 @@
 #
 # Makefile for directory with subdirs to build.
 #   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-#   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+#   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012, 2013, 2014, 2015, 2016
 #   Free Software Foundation
 #
 # This file is free software; you can redistribute it and/or modify
@@ -222,6 +223,7 @@ HOST_EXPORTS = \
 	GMPINC="$(HOST_GMPINC)"; export GMPINC; \
 	ISLLIBS="$(HOST_ISLLIBS)"; export ISLLIBS; \
 	ISLINC="$(HOST_ISLINC)"; export ISLINC; \
+	ISLVER="$(HOST_ISLVER)"; export ISLVER; \
 	LIBELFLIBS="$(HOST_LIBELFLIBS)"; export LIBELFLIBS; \
 	LIBELFINC="$(HOST_LIBELFINC)"; export LIBELFINC; \
 	XGCC_FLAGS_FOR_TARGET="$(XGCC_FLAGS_FOR_TARGET)"; export XGCC_FLAGS_FOR_TARGET; \
@@ -315,6 +317,7 @@ HOST_GMPINC = @gmpinc@
 # Where to find isl
 HOST_ISLLIBS = @isllibs@
 HOST_ISLINC = @islinc@
+HOST_ISLVER = @islver@
 
 # Where to find libelf
 HOST_LIBELFLIBS = @libelflibs@
@@ -789,7 +792,8 @@ BASE_FLAGS_TO_PASS = \
 	$(CXX_FOR_TARGET_FLAG_TO_PASS) \
 	"TFLAGS=$(TFLAGS)" \
 	"CONFIG_SHELL=$(SHELL)" \
-	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" 
+	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+	$(if $(LSAN_OPTIONS),"LSAN_OPTIONS=$(LSAN_OPTIONS)")
 
 # We leave this in just in case, but it is not needed anymore.
 RECURSE_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS)
diff --git a/Makefile.tpl b/Makefile.tpl
index f7bb77e..5a9a83b 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -6,7 +6,8 @@ in
 #
 # Makefile for directory with subdirs to build.
 #   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-#   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+#   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012, 2013, 2014, 2015, 2016
 #   Free Software Foundation
 #
 # This file is free software; you can redistribute it and/or modify
@@ -225,6 +226,7 @@ HOST_EXPORTS = \
 	GMPINC="$(HOST_GMPINC)"; export GMPINC; \
 	ISLLIBS="$(HOST_ISLLIBS)"; export ISLLIBS; \
 	ISLINC="$(HOST_ISLINC)"; export ISLINC; \
+	ISLVER="$(HOST_ISLVER)"; export ISLVER; \
 	LIBELFLIBS="$(HOST_LIBELFLIBS)"; export LIBELFLIBS; \
 	LIBELFINC="$(HOST_LIBELFINC)"; export LIBELFINC; \
 	XGCC_FLAGS_FOR_TARGET="$(XGCC_FLAGS_FOR_TARGET)"; export XGCC_FLAGS_FOR_TARGET; \
@@ -318,6 +320,7 @@ HOST_GMPINC = @gmpinc@
 # Where to find isl
 HOST_ISLLIBS = @isllibs@
 HOST_ISLINC = @islinc@
+HOST_ISLVER = @islver@
 
 # Where to find libelf
 HOST_LIBELFLIBS = @libelflibs@
@@ -590,7 +593,8 @@ BASE_FLAGS_TO_PASS =[+ FOR flags_to_pass +][+ IF optional +] \
 	$(CXX_FOR_TARGET_FLAG_TO_PASS) \
 	"TFLAGS=$(TFLAGS)" \
 	"CONFIG_SHELL=$(SHELL)" \
-	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" 
+	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+	$(if $(LSAN_OPTIONS),"LSAN_OPTIONS=$(LSAN_OPTIONS)")
 
 # We leave this in just in case, but it is not needed anymore.
 RECURSE_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS)
diff --git a/config/isl.m4 b/config/isl.m4
index 86ccb94..92524af 100644
--- a/config/isl.m4
+++ b/config/isl.m4
@@ -106,7 +106,7 @@ AC_DEFUN([ISL_CHECK_VERSION],
     LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs} ${gmplibs}"
     LIBS="${_isl_saved_LIBS} -lisl -lgmp"
 
-    AC_MSG_CHECKING([for isl 0.15 (or deprecated 0.14)])
+    AC_MSG_CHECKING([for isl 0.16, 0.15, or deprecated 0.14])
     AC_TRY_LINK([#include <isl/ctx.h>],
                 [isl_ctx_get_max_operations (isl_ctx_alloc ());],
                 [gcc_cv_isl=yes],
@@ -114,7 +114,19 @@ AC_DEFUN([ISL_CHECK_VERSION],
     AC_MSG_RESULT([$gcc_cv_isl])
 
     if test "${gcc_cv_isl}" = no ; then
-      AC_MSG_RESULT([recommended isl version is 0.15, minimum required isl version 0.14 is deprecated])
+      AC_MSG_RESULT([recommended isl version is 0.16 or 0.15, the minimum required isl version 0.14 is deprecated])
+    fi
+
+    AC_MSG_CHECKING([for isl 0.16 or 0.15])
+    AC_TRY_LINK([#include <isl/schedule.h>],
+                [isl_options_set_schedule_serialize_sccs (NULL, 0);],
+                [ac_has_isl_options_set_schedule_serialize_sccs=yes],
+                [ac_has_isl_options_set_schedule_serialize_sccs=no])
+    AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
+
+    if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
+      islver="0.15"
+      AC_SUBST([islver])
     fi
 
     CFLAGS=$_isl_saved_CFLAGS
diff --git a/configure b/configure
index 19eb2a4..89c863c 100755
--- a/configure
+++ b/configure
@@ -650,6 +650,7 @@ extra_linker_plugin_flags
 extra_linker_plugin_configure_flags
 islinc
 isllibs
+islver
 poststage1_ldflags
 poststage1_libs
 stage1_ldflags
@@ -6020,8 +6021,8 @@ $as_echo "$as_me: WARNING: using in-tree isl, disabling version check" >&2;}
     LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs} ${gmplibs}"
     LIBS="${_isl_saved_LIBS} -lisl -lgmp"
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.15 (or deprecated 0.14)" >&5
-$as_echo_n "checking for isl 0.15 (or deprecated 0.14)... " >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.16, 0.15, or deprecated 0.14" >&5
+$as_echo_n "checking for isl 0.16, 0.15, or deprecated 0.14... " >&6; }
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <isl/ctx.h>
@@ -6044,8 +6045,36 @@ rm -f core conftest.err conftest.$ac_objext \
 $as_echo "$gcc_cv_isl" >&6; }
 
     if test "${gcc_cv_isl}" = no ; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: recommended isl version is 0.15, minimum required isl version 0.14 is deprecated" >&5
-$as_echo "recommended isl version is 0.15, minimum required isl version 0.14 is deprecated" >&6; }
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: recommended isl version is 0.16 or 0.15, the minimum required isl version 0.14 is deprecated" >&5
+$as_echo "recommended isl version is 0.16 or 0.15, the minimum required isl version 0.14 is deprecated" >&6; }
+    fi
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.16 or 0.15" >&5
+$as_echo_n "checking for isl 0.16 or 0.15... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <isl/schedule.h>
+int
+main ()
+{
+isl_options_set_schedule_serialize_sccs (NULL, 0);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_has_isl_options_set_schedule_serialize_sccs=yes
+else
+  ac_has_isl_options_set_schedule_serialize_sccs=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_isl_options_set_schedule_serialize_sccs" >&5
+$as_echo "$ac_has_isl_options_set_schedule_serialize_sccs" >&6; }
+
+    if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
+      islver="0.15"
+
     fi
 
     CFLAGS=$_isl_saved_CFLAGS
@@ -6127,7 +6156,7 @@ if test $target_elf = yes; then :
 else
   if test x"$default_enable_lto" = x"yes" ; then
     case $target in
-      *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
+      *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
       # On other non-ELF platforms, LTO has yet to be validated.
       *) enable_lto=no ;;
     esac
@@ -6138,7 +6167,7 @@ else
   # warn during gcc/ subconfigure; unless you're bootstrapping with
   # -flto it won't be needed until after installation anyway.
     case $target in
-      *-cygwin* | *-mingw* | *-apple-darwin*) ;;
+      *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
       *) if test x"$enable_lto" = x"yes"; then
 	as_fn_error "LTO support is not enabled for this target." "$LINENO" 5
         fi
diff --git a/configure.ac b/configure.ac
index 0ae53ac..321b908 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-#   2014, 2015 Free Software Foundation, Inc.
+#   2014, 2015, 2016 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1817,7 +1817,7 @@ ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
   build_lto_plugin=yes
 ],[if test x"$default_enable_lto" = x"yes" ; then
     case $target in
-      *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
+      *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
       # On other non-ELF platforms, LTO has yet to be validated.
       *) enable_lto=no ;;
     esac
@@ -1828,7 +1828,7 @@ ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
   # warn during gcc/ subconfigure; unless you're bootstrapping with
   # -flto it won't be needed until after installation anyway.
     case $target in
-      *-cygwin* | *-mingw* | *-apple-darwin*) ;;
+      *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
       *) if test x"$enable_lto" = x"yes"; then
 	AC_MSG_ERROR([LTO support is not enabled for this target.])
         fi