Partial backport r256656

2018-06-15  Martin Liska  <mliska@suse.cz>

	Backport from mainline
	2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* lex.c (search_line_fast): Remove illegal coercion of an
	unaligned pointer value to vector pointer type and replace with
	use of __builtin_vec_vsx_ld () built-in function, which operates
	on unaligned pointer values.

From-SVN: r261621

diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index c920a05d438433e0d8a59ddf7b90ea389a62f667..a63abb04f5e47c3b747e1d942c032e28a55a72ab 100644 (file)
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,15 @@
+2018-06-15  Martin Liska  <mliska@suse.cz>
+
+       PR bootstrap/86162
+
+       Backport from mainline
+       2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>
+
+       * lex.c (search_line_fast): Remove illegal coercion of an
+       unaligned pointer value to vector pointer type and replace with
+       use of __builtin_vec_vsx_ld () built-in function, which operates
+       on unaligned pointer values.
+
 2017-07-04  Release Manager
 
        * GCC 6.4.0 released.

diff --git a/libcpp/lex.c b/libcpp/lex.c
index e5a0397f309995760429601fa204b6039dbe9c33..b789686f1c499bfd6fe98861232346cc8562f919 100644 (file)
--- a/libcpp/lex.c
+++ b/libcpp/lex.c
@@ -568,7 +568,7 @@ search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
     {
       vc m_nl, m_cr, m_bs, m_qm;
 
-      data = *((const vc *)s);
+      data = __builtin_vec_vsx_ld (0, s);
       s += 16;
 
       m_nl = (vc) __builtin_vec_cmpeq(data, repl_nl);