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Commit Graph

Author	SHA1	Message	Date
fanquake	a09269a146	guix: document when certain guix patches can be dropped	2 years ago
fanquake	d6fae988ef	guix: fix vmov alignment issues with gcc 10.3.0 & mingw-w64 This introduces a patch to our GCC (10.3.0) mingw-w64 compiler, in Guix, to make it avoid using aligned vmov instructions. This works around a longstanding issue in GCC, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412, which was recently discovered to be causing issues, see #24726. Note that distros like Debian are also patching around this issue, and that is where this patch comes from. This would also explain why we haven't run into this problem earlier, in development builds. See: https://salsa.debian.org/mingw-w64-team/gcc-mingw-w64/-/blob/master/debian/patches/vmov-alignment.patch. Fixes #24726. Alternative to #24727. See also: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939559	3 years ago

Author

SHA1

Message

Date

fanquake

a09269a146

guix: document when certain guix patches can be dropped

fanquake

d6fae988ef

guix: fix vmov alignment issues with gcc 10.3.0 & mingw-w64

This introduces a patch to our GCC (10.3.0) mingw-w64 compiler, in Guix, to make
it avoid using aligned vmov instructions. This works around a longstanding issue
in GCC, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412, which was recently
discovered to be causing issues, see #24726.

Note that distros like Debian are also patching around this issue, and that is
where this patch comes from. This would also explain why we haven't run into this
problem earlier, in development builds. See:
https://salsa.debian.org/mingw-w64-team/gcc-mingw-w64/-/blob/master/debian/patches/vmov-alignment.patch.

Fixes #24726.
Alternative to #24727.

See also:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939559

2 Commits (2b6bd12eea0c970881753124ec3f0a67e2de8e17)