Partial backport r256656

2018-06-29  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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch@261621 138bc75d-0d04-0410-961f-82ee72b054a4

From-SVN: r262243

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5d47aac3299ffe1c685fa3d5a749a51ea867a23f..ca48a0787c72f21e5569fb39c707aa893fc8a107 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+2018-06-29  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.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch@261621 138bc75d-0d04-0410-961f-82ee72b054a4
+
 2018-06-27  David Edelsohn  <dje.gcc@gmail.com>
 
        2018-06-19  Tony Reix  <tony.reix@atos.com>

diff --git a/libcpp/lex.c b/libcpp/lex.c
index 097c78002cbb70761bc2640cfefa21eae0c48301..e0fb9e822c443a6f01339f5cd5edfc7c47b8c9ba 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);