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Add loongarch support and LSX SIMD optimizations

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Enable LSX by default:
    ./configure && make

Disable LSX:
    ./configure --enable-loongarch-lsx=no && make

Signed-off-by: Cosmin Truta <ctruta@gmail.com>
This commit is contained in:
jinbo
2024-01-08 10:17:17 +08:00
committed by Cosmin Truta
parent 2a4f0f5aee
commit 6b0d1bd75b
5 changed files with 589 additions and 0 deletions
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71
configure.ac
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@@ -334,6 +334,9 @@ AC_ARG_ENABLE([hardware-optimizations],
enable_intel_sse=no
AC_DEFINE([PNG_INTEL_SSE_OPT], [0],
[Disable INTEL_SSE optimizations])
enable_loongarch_lsx=no
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [0],
[Disable LOONGARCH_LSX optimizations])
;;
*)
# allow enabling hardware optimization on any system:
@@ -358,6 +361,11 @@ AC_ARG_ENABLE([hardware-optimizations],
AC_DEFINE([PNG_POWERPC_VSX_OPT], [2],
[Enable POWERPC VSX optimizations])
;;
loongarch*)
enable_loongarch_lsx=yes
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [1],
[Enable LOONGARCH_LSX optimizations])
;;
esac
;;
esac])
@@ -535,6 +543,69 @@ AM_CONDITIONAL([PNG_POWERPC_VSX],
powerpc*|ppc64*) : ;;
esac])
# LOONGARCH
# ===
#
# LOONGARCH LSX (SIMD) support
if test "$LSX_CFLAGS" = ''; then
LSX_CFLAGS="-mlsx"
fi
compiler_support_loongarch_lsx=no
AC_MSG_CHECKING(whether to use loongarch LSX intrinsics)
save_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $LSX_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include<lsxintrin.h>
int main(){
__m128i a, b, c;
a = __lsx_vadd_w(b, c);
return 0;
}]])],compiler_support_loongarch_lsx=yes)
CFLAGS=$save_CFLAGS
AC_MSG_RESULT($compiler_support_loongarch_lsx)
AC_ARG_ENABLE([loongarch-lsx],
AS_HELP_STRING([[[--enable-loongarch-lsx]]],
[Enable LOONGARCH LSX optimizations: =no/off, yes/on:]
[no/off: disable the optimizations;]
[yes/on: turn on unconditionally.]
[If not specified: determined by the compiler.]),
[case "$enableval" in
no|off)
# disable the default enabling on __loongarch_simd systems:
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [0],
[Disable LOONGARCH LSX optimizations])
# Prevent inclusion of the assembler files below:
enable_loongarch_lsx=no;;
yes|on)
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [1],
[Enable LOONGARCH LSX optimizations])
;;
*)
AC_MSG_ERROR([--enable-loongarch-lsx=${enable_loongarch_lsx}: invalid value])
esac])
if test "$enable_loongarch_lsx" != 'no'; then
if test $compiler_support_loongarch_lsx = yes; then
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [1], [Enable LOONGARCH LSX optimizations])
else
AC_MSG_WARN([Compiler does not support loongarch LSX.])
fi
fi
# Add LOONGARCH specific files to all builds where the host_cpu is loongarch ('loongarch*') or
# where LOONGARCH optimizations were explicitly requested (this allows a fallback if a
# future host CPU does not match 'loongarch*')
AM_CONDITIONAL([PNG_LOONGARCH_LSX],
[test "$enable_loongarch_lsx" != 'no' && test $compiler_support_loongarch_lsx = yes &&
case "$host_cpu" in
loongarch*) :;;
*) test "$enable_loongarch_lsx" != '';;
esac])
AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
# Config files, substituting as above