config.gcc: Add new case statement to set default_gnu_indirect_function.

2017-09-22  Steve Ellcey  <sellcey@cavium.com>

	* config.gcc: Add new case statement to set
	default_gnu_indirect_function.  Remove it from x86_64-*-linux*,
	i[34567]86-*, powerpc*-*-linux*spe*, powerpc*-*-linux*, s390-*-linux*,
	s390x-*-linux* case statements.   Added aarch64 to the list of
	supported architectures.

From-SVN: r253104

gcc/ChangeLog

+2017-09-22  Steve Ellcey  <sellcey@cavium.com>
+
+	* config.gcc: Add new case statement to set
+	default_gnu_indirect_function.  Remove it from x86_64-*-linux*,
+	i[34567]86-*, powerpc*-*-linux*spe*, powerpc*-*-linux*, s390-*-linux*,
+	s390x-*-linux* case statements.   Added aarch64 to the list of
+	supported architectures.
+
 2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	PR tree-optimization/82289

gcc/config.gcc

@@ -1516,14 +1516,6 @@ i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu | i[34567]86-*-gnu* | i[34567]8
 	i[34567]86-*-linux*)
 		tm_file="${tm_file} linux.h linux-android.h"
 		extra_options="${extra_options} linux-android.opt"
-		# Assume modern glibc if not targeting Android nor uclibc.
-		case ${target} in
-		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
-		  ;;
-		*)
-		  default_gnu_indirect_function=yes
-		  ;;
-		esac
 		if test x$enable_targets = xall; then
 			tm_file="${tm_file} i386/x86-64.h i386/gnu-user-common.h i386/gnu-user64.h i386/linux-common.h i386/linux64.h"
 			tm_defines="${tm_defines} TARGET_BI_ARCH=1"
@@ -1582,14 +1574,6 @@ x86_64-*-linux* | x86_64-*-kfreebsd*-gnu)
 	x86_64-*-linux*)
 		tm_file="${tm_file} linux.h linux-android.h i386/linux-common.h i386/linux64.h"
 		extra_options="${extra_options} linux-android.opt"
-		# Assume modern glibc if not targeting Android nor uclibc.
-		case ${target} in
-		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
-		  ;;
-		*)
-		  default_gnu_indirect_function=yes
-		  ;;
-		esac
 	  	;;
 	x86_64-*-kfreebsd*-gnu)
 		tm_file="${tm_file} kfreebsd-gnu.h i386/kfreebsd-gnu64.h"
@@ -2455,7 +2439,6 @@ powerpc*-*-linux*spe*)
 	tm_file="${tm_file} powerpcspe/linux.h glibc-stdint.h"
 	tmake_file="${tmake_file} powerpcspe/t-ppcos powerpcspe/t-linux"
 	tm_file="${tm_file} powerpcspe/linuxspe.h powerpcspe/e500.h"
-	default_gnu_indirect_function=yes
 	;;
 powerpc*-*-linux*)
 	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h freebsd-spec.h rs6000/sysv4.h"
@@ -2535,14 +2518,6 @@ powerpc*-*-linux*)
 	if test x${enable_secureplt} = xyes; then
 		tm_file="rs6000/secureplt.h ${tm_file}"
 	fi
-	# Assume modern glibc if not targeting Android nor uclibc.
-	case ${target} in
-	    *-*-*android*|*-*-*uclibc*|*-*-*musl*)
-		    ;;
-	    *)
-		default_gnu_indirect_function=yes
-		    ;;
-	esac
 	;;
 powerpc-wrs-vxworks*spe)
 	tm_file="${tm_file} elfos.h freebsd-spec.h powerpcspe/sysv4.h"
@@ -2664,7 +2639,6 @@ rx-*-elf*)
 	tmake_file="${tmake_file} rx/t-rx"
 	;;
 s390-*-linux*)
-	default_gnu_indirect_function=yes
 	tm_file="s390/s390.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h s390/linux.h"
 	c_target_objs="${c_target_objs} s390-c.o"
 	cxx_target_objs="${cxx_target_objs} s390-c.o"
@@ -2674,7 +2648,6 @@ s390-*-linux*)
 	tmake_file="${tmake_file} s390/t-s390"
 	;;
 s390x-*-linux*)
-	default_gnu_indirect_function=yes
 	tm_file="s390/s390x.h s390/s390.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h s390/linux.h"
 	tm_p_file="linux-protos.h s390/s390-protos.h"
 	c_target_objs="${c_target_objs} s390-c.o"
@@ -3120,6 +3093,20 @@ case ${target} in
 	;;
 esac
 
+# Assume the existence of indirect function support and allow the use of the
+# resolver attribute.
+case ${target} in
+*-*-linux*android*|*-*-linux*uclibc*|*-*-linux*musl*)
+        ;;
+*-*-linux*)
+	case ${target} in
+	aarch64*-* | i[34567]86-* | powerpc*-* | s390*-* | x86_64-*)
+		default_gnu_indirect_function=yes
+		;;
+	esac
+	;;
+esac
+
 # Build mkoffload tool
 case ${target} in
 *-intelmic-* | *-intelmicemul-*)