b04a20f77f
GCC 5 has a misaligned access to a vector pointer which causes a build failure when using GCC 8 and later. Backport upstream fix that was applied on the GCC 6 branch. * gnu/packages/gcc.scm (gcc-5)[source]: Apply gcc-5-fix-powerpc64le-build.patch. * gnu/packages/patches/gcc-5-fix-powerpc64le-build.patch: New file. * gnu/local.mk (dist_patch_DATA): Register it. Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
65 lines
1.8 KiB
Diff
65 lines
1.8 KiB
Diff
From ee6c0081c03330045b3d4cde8421cd1d3a459609 Mon Sep 17 00:00:00 2001
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From: Martin Liska <mliska@suse.cz>
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Date: Fri, 15 Jun 2018 10:51:28 +0200
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Subject: [PATCH] Partial backport r256656
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2018-06-15 Martin Liska <mliska@suse.cz>
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Backport from mainline
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2018-01-10 Kelvin Nilsen <kelvin@gcc.gnu.org>
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* lex.c (search_line_fast): Remove illegal coercion of an
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unaligned pointer value to vector pointer type and replace with
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use of __builtin_vec_vsx_ld () built-in function, which operates
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on unaligned pointer values.
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From-SVN: r261621
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---
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Obtained from:
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https://gcc.gnu.org/git/?p=gcc.git;a=patch;h=ee6c0081c03330045b3d4cde8421cd1d3a459609
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The libcpp/ChangeLog hunk was modified to apply on top of gcc-5's libcpp/ChangeLog.
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libcpp/ChangeLog | 12 ++++++++++++
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libcpp/lex.c | 2 +-
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2 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
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index c920a05d438..a63abb04f5e 100644
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--- a/libcpp/ChangeLog
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+++ b/libcpp/ChangeLog
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@@ -1,3 +1,15 @@
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+2018-06-15 Martin Liska <mliska@suse.cz>
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+
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+ PR bootstrap/86162
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+
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+ Backport from mainline
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+ 2018-01-10 Kelvin Nilsen <kelvin@gcc.gnu.org>
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+
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+ * lex.c (search_line_fast): Remove illegal coercion of an
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+ unaligned pointer value to vector pointer type and replace with
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+ use of __builtin_vec_vsx_ld () built-in function, which operates
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+ on unaligned pointer values.
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+
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2017-10-10 Release Manager
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* GCC 5.5.0 released.
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diff --git a/libcpp/lex.c b/libcpp/lex.c
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index e5a0397f309..b789686f1c4 100644
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--- a/libcpp/lex.c
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+++ b/libcpp/lex.c
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@@ -568,7 +568,7 @@ search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
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{
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vc m_nl, m_cr, m_bs, m_qm;
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- data = *((const vc *)s);
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+ data = __builtin_vec_vsx_ld (0, s);
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s += 16;
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m_nl = (vc) __builtin_vec_cmpeq(data, repl_nl);
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--
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2.27.0
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