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BUILD: Configure automatically detects SIMD

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This commit is contained in:
Wyatt Radkiewicz 2023-08-07 13:34:17 -07:00 committed by Eugene Sandulenko
parent ad0c823f2f
commit 480a77f310
1 changed files with 67 additions and 22 deletions
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89
configure vendored
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@ -225,9 +225,9 @@ _builtin_resources=yes
_windows_console=yes
_windows_unicode=yes
_cygwin_build=no
_ext_sse2=no
_ext_avx2=no
_ext_neon=no
_ext_sse2=auto
_ext_avx2=auto
_ext_neon=auto
# Default commands
_ranlib=ranlib
_strip=strip
@ -6875,27 +6875,72 @@ echo "$_enable_ubsan"
#
# Whether to add compiler options and preprocessor defines for SIMD extensions
#
if ( echo "$_host_cpu" | grep '86' >> /dev/null ) ; then
define_in_config_if_yes "$_ext_sse2" 'SCUMMVM_SSE2'
if test "$_ext_sse2" = yes ; then
append_var CXXFLAGS "-msse2 -msse"
fi
echo_n "Enabling x86/64 SSE2... "
echo "$_ext_sse2"
define_in_config_if_yes "$_ext_avx2" 'SCUMMVM_AVX2'
if test "$_ext_avx2" = yes ; then
append_var CXXFLAGS "-mavx2 -mavx -msse2 -msse"
define_in_config_if_yes "$_ext_avx2" 'SCUMMVM_SSE2'
fi
echo_n "Enabling x86/64 AVX2 and SSE2... "
echo "$_ext_avx2"
fi
if ( echo "$_host_cpu" | grep 'arm' >> /dev/null ) || ( echo "$_host_cpu" | grep 'aarch64' >> /dev/null ) ; then
define_in_config_if_yes "$_ext_neon" 'SCUMMVM_NEON'
echo_n "Enabling arm NEON... "
echo "$_ext_neon"
# Automatically detect if SSE2, NEON, AVX2 can be compiled (not if they can
# be run at runtime)
case $_host_cpu in
x86_64 | amd64)
if test "$_ext_sse2" = auto ; then
_ext_sse2=yes
fi
if test "$_ext_avx2" = auto ; then
_ext_avx2=yes
fi
_ext_neon=no
;;
i[3-6]86)
if test "$_ext_sse2" = auto ; then
_ext_sse2=yes
fi
if test "$_ext_avx2" = auto ; then
_ext_avx2=no
fi
_ext_neon=no
;;
aarch64)
if test "$_ext_neon" = auto ; then
_ext_neon=yes
fi
_ext_sse2=no
_ext_avx2=no
;;
arm*)
if test "$_ext_neon" = auto ; then
_ext_neon=no
fi
_ext_sse2=no
_ext_avx2=no
;;
*)
_ext_sse2=no
_ext_avx2=no
_ext_neon=no
;;
esac
define_in_config_if_yes "$_ext_sse2" 'SCUMMVM_SSE2'
if test "$_ext_sse2" = yes ; then
append_var CXXFLAGS "-msse2 -msse"
fi
echo_n "Enabling x86/64 SSE2... "
echo "$_ext_sse2"
define_in_config_if_yes "$_ext_avx2" 'SCUMMVM_AVX2'
if test "$_ext_avx2" = yes ; then
append_var CXXFLAGS "-mavx2 -mavx -msse2 -msse"
define_in_config_if_yes "$_ext_avx2" 'SCUMMVM_SSE2'
fi
echo_n "Enabling x86/64 AVX2 and SSE2... "
echo "$_ext_avx2"
define_in_config_if_yes "$_ext_neon" 'SCUMMVM_NEON'
# AArch64 might by default come with more fpu extensions, so we wouldn't want
# to downgrade. Almost all armv7 cpus have neon or less in terms of fpu
# extensions so setting fpu to neon is almost always an upgrade over defaults.
# Not to mention it would have to be included anyways
if ( test "$_ext_avx2" = yes ) && ( test "$_host_cpu" != aarch64 ) ; then
append_var CXXFLAGS "-mfpu=neon"
fi
echo_n "Enabling arm NEON... "
echo "$_ext_neon"
echo_n "Backend... "
echo_n "$_backend"