Fix search_line_fast for aarch64/ILP32

	* lex.c (search_line_fast) [__ARM_NEON && __ARM_64BIT_STATE]:
	Convert 64-bit value to boolean before passing to
	__builtin_expect.

From-SVN: r246312

libcpp/ChangeLog

+2017-03-21  Andreas Schwab  <schwab@suse.de>
+
+	* lex.c (search_line_fast) [__ARM_NEON && __ARM_64BIT_STATE]:
+	Convert 64-bit value to boolean before passing to
+	__builtin_expect.
+
 2017-03-16  Jason Merrill  <jason@redhat.com>
 
 	* init.c (cpp_init_builtins): Update __cplusplus for C++17.

libcpp/lex.c

@@ -821,7 +821,7 @@ search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
       v = vorrq_u8 (t, vceqq_u8 (data, repl_bs));
       w = vorrq_u8 (u, vceqq_u8 (data, repl_qm));
       t = vorrq_u8 (v, w);
-      if (__builtin_expect (vpaddd_u64 ((uint64x2_t)t), 0))
+      if (__builtin_expect (vpaddd_u64 ((uint64x2_t)t) != 0, 0))
 	goto done;
     }