commit: 37dff17dbf53946cffea53f5c0514f229f3be11d Author: Sam James <sam <AT> gentoo <DOT> org> AuthorDate: Sun Nov 24 22:41:57 2024 +0000 Commit: Sam James <sam <AT> gentoo <DOT> org> CommitDate: Sun Nov 24 22:41:57 2024 +0000 URL: https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=37dff17d
15.0.0: add 34_all_time64_ssemath.patch like for 14.2.0 Signed-off-by: Sam James <sam <AT> gentoo.org> 15.0.0/gentoo/34_all_time64_ssemath.patch | 43 +++++++++++++++++++++++++++++++ 15.0.0/gentoo/README.history | 1 + 2 files changed, 44 insertions(+) diff --git a/15.0.0/gentoo/34_all_time64_ssemath.patch b/15.0.0/gentoo/34_all_time64_ssemath.patch new file mode 100644 index 0000000..3701b6b --- /dev/null +++ b/15.0.0/gentoo/34_all_time64_ssemath.patch @@ -0,0 +1,43 @@ +From 33ba5944f2b887fe8bddd541790645b74f1f2655 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <[email protected]> +Date: Sun, 24 Nov 2024 14:45:37 +0100 +Subject: [PATCH] Default to -mfpmath=sse on x86 with time64 + +Our time64 stages already default to `-mfpmath=sse`, so let's have +the time64 flag implicitly enable it as the default to make things more +consistent. Furthermore, this also improves compatibility with clang +that always enables it whenever the target architectures supports SSE. + +Note that this works only if `-march=` with SSE support is specified. +We could technically improve the consistency even further by raising +the default `-march=`, but that seems a bit intrusive and probably +unnecessary, given that the vast majority of Gentoo users and/or +upstream projects will specify `-march=`. + +See also: +https://public-inbox.gentoo.org/gentoo-dev/[email protected]/ +https://public-inbox.gentoo.org/gentoo-dev/[email protected]/ +--- + gcc/config/i386/i386-options.cc | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc +index 6c212a8ed..03801f382 100644 +--- a/gcc/config/i386/i386-options.cc ++++ b/gcc/config/i386/i386-options.cc +@@ -2881,7 +2881,11 @@ ix86_option_override_internal (bool main_args_p, + Also -mfpmath=387 is overall a lot more compact (bout 4-5%) than SSE + codegen. We may switch to 387 with -ffast-math for size optimized + functions. */ +- else if (fast_math_flags_set_p (&global_options) ++#ifndef _GENTOO_TIME64_FORCE ++ #define _GENTOO_TIME64_FORCE 0 ++#endif ++ ++ else if ((fast_math_flags_set_p (&global_options) || _GENTOO_TIME64_FORCE) + && TARGET_SSE2_P (opts->x_ix86_isa_flags)) + opts->x_ix86_fpmath = FPMATH_SSE; + else +-- +2.47.0 + diff --git a/15.0.0/gentoo/README.history b/15.0.0/gentoo/README.history index 479b5cc..cf197b9 100644 --- a/15.0.0/gentoo/README.history +++ b/15.0.0/gentoo/README.history @@ -1,5 +1,6 @@ ?? + + 34_all_time64_ssemath.patch - 72_all_PR117628-libgcc-c23.patch - 73_all_PR117646-match-Fix-the-max-a-b-0-pattern-for-pointers.patch
