Synchronize with google/gcc-4_9 to r224707 (from r214835)

Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d

1 files changed, 89 insertions, 2 deletions

diff --git a/gcc-4.9/gcc/configure b/gcc-4.9/gcc/configure
index 3e62398ee..cb1d3004f 100755
--- a/gcc-4.9/gcc/configure
+++ b/gcc-4.9/gcc/configure
@@ -17990,7 +17990,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17984 "configure"
+#line 17993 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18096,7 +18096,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 18090 "configure"
+#line 18099 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -27008,6 +27008,53 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_pie" >&5
 $as_echo "$gcc_cv_ld_pie" >&6; }
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker PIE support with copy reloc" >&5
+$as_echo_n "checking linker PIE support with copy reloc... " >&6; }
+gcc_cv_ld_pie_copyreloc=no
+if test $gcc_cv_ld_pie = yes ; then
+  if test $in_tree_ld = yes ; then
+    if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
+      gcc_cv_ld_pie_copyreloc=yes
+    fi
+  elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
+    # Check if linker supports -pie option with copy reloc
+    case "$target" in
+    i?86-*-linux* | x86_64-*-linux*)
+      cat > conftest1.s <<EOF
+	.globl	a_glob
+	.data
+	.type	a_glob, @object
+	.size	a_glob, 4
+a_glob:
+	.long	2
+EOF
+      cat > conftest2.s <<EOF
+	.text
+	.globl	main
+	.type	main, @function
+main:
+	movl	%eax, a_glob(%rip)
+	.size	main, .-main
+EOF
+      if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
+         && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
+         && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
+         && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
+        gcc_cv_ld_pie_copyreloc=yes
+      fi
+      rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
+      ;;
+    esac
+  fi
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LD_PIE_COPYRELOC `if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`
+_ACEOF
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_pie_copyreloc" >&5
+$as_echo "$gcc_cv_ld_pie_copyreloc" >&6; }
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker EH-compatible garbage collection of sections" >&5
 $as_echo_n "checking linker EH-compatible garbage collection of sections... " >&6; }
 gcc_cv_ld_eh_gc_sections=no
@@ -27989,7 +28036,47 @@ if test "x${CLOOGLIBS}" != "x" ; then
 
 $as_echo "#define HAVE_cloog 1" >>confdefs.h
 
+
+  # Check whether isl_schedule_constraints_compute_schedule is available;
+  # it's new in ISL-0.13.
+  saved_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS $ISLINC"
+  saved_LIBS="$LIBS"
+  LIBS="$LIBS $CLOOGLIBS $ISLLIBS $GMPLIBS"
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking Checking for isl_schedule_constraints_compute_schedule" >&5
+$as_echo_n "checking Checking for isl_schedule_constraints_compute_schedule... " >&6; }
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <isl/schedule.h>
+int
+main ()
+{
+isl_schedule_constraints_compute_schedule (NULL);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_has_isl_schedule_constraints_compute_schedule=yes
+else
+  ac_has_isl_schedule_constraints_compute_schedule=no
 fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_isl_schedule_constraints_compute_schedule" >&5
+$as_echo "$ac_has_isl_schedule_constraints_compute_schedule" >&6; }
+
+  LIBS="$saved_LIBS"
+  CFLAGS="$saved_CFLAGS"
+
+  if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
+
+$as_echo "#define HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE 1" >>confdefs.h
+
+  fi
+fi
+
 
 # Check for plugin support
 # Check whether --enable-plugin was given.