config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on aarch64*-*-freebsd*

2018-12-19  Andreas Tobler  <andreast@gcc.gnu.org>

	* config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on
	aarch64*-*-freebsd*

From-SVN: r267287

gcc/ChangeLog

+2018-12-19  Andreas Tobler  <andreast@gcc.gnu.org>
+
+	* config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on
+	aarch64*-*-freebsd*
+
 2018-12-19  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (SWI1248_AVX512BWDQ_64): Rename from

gcc/config.gcc

@@ -1012,6 +1012,7 @@ aarch64*-*-freebsd*)
 	tm_file="${tm_file} dbxelf.h elfos.h ${fbsd_tm_file}"
 	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-freebsd.h"
 	tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-freebsd"
+	tm_defines="${tm_defines}  TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
 	;;
 aarch64*-*-linux*)
 	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h"