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config: remove checks for unused SIMD gates

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Specifically, we don't have any code gated on:

    HAVE_SSE
    HAVE_SSE3
    HAVE_SSE4_2
    HAVE_AVX512CD
    HAVE_AVX512DQ
    HAVE_AVX512IFMA
    HAVE_AVX512VBMI
    HAVE_AVX512PF
    HAVE_AVX512ER

So we can remove them and the checks that probe and generate them.

Sponsored-by: TrueNAS
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@truenas.com>
Closes #18285
This commit is contained in:
Rob Norris 2026-03-04 14:32:11 +11:00 committed by Brian Behlendorf
parent e4b8d6a56f
commit 23bd583830
2 changed files with 1 additions and 197 deletions
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196
config/toolchain-simd.m4
View File

@ -5,22 +5,13 @@ dnl #
AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD], [
case "$host_cpu" in
amd64 | x86_64 | x86 | i686)
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSSE3
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_1
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX2
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512F
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512CD
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512DQ
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512BW
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512IFMA
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VBMI
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512PF
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512ER
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VL
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AES
ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_PCLMULQDQ
@ -35,26 +26,6 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD], [
esac
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE], [
AC_MSG_CHECKING([whether host toolchain supports SSE])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
int main()
{
__asm__ __volatile__("xorps %xmm0, %xmm1");
return (0);
}
]])], [
AC_DEFINE([HAVE_SSE], 1, [Define if host toolchain supports SSE])
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2
dnl #
@ -75,27 +46,6 @@ AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2], [
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3], [
AC_MSG_CHECKING([whether host toolchain supports SSE3])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
int main()
{
char v[16];
__asm__ __volatile__("lddqu %0,%%xmm0" :: "m"(v[0]));
return (0);
}
]])], [
AC_DEFINE([HAVE_SSE3], 1, [Define if host toolchain supports SSE3])
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSSE3
dnl #
@ -136,26 +86,6 @@ AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_1], [
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2], [
AC_MSG_CHECKING([whether host toolchain supports SSE4.2])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
int main()
{
__asm__ __volatile__("pcmpgtq %xmm0, %xmm1");
return (0);
}
]])], [
AC_DEFINE([HAVE_SSE4_2], 1, [Define if host toolchain supports SSE4.2])
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX
dnl #
@ -219,48 +149,6 @@ AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512F], [
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512CD
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512CD], [
AC_MSG_CHECKING([whether host toolchain supports AVX512CD])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vplzcntd %zmm0,%zmm1");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512CD], 1, [Define if host toolchain supports AVX512CD])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512DQ
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512DQ], [
AC_MSG_CHECKING([whether host toolchain supports AVX512DQ])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vandpd %zmm0,%zmm1,%zmm2");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512DQ], 1, [Define if host toolchain supports AVX512DQ])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512BW
dnl #
@ -282,90 +170,6 @@ AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512BW], [
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512IFMA
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512IFMA], [
AC_MSG_CHECKING([whether host toolchain supports AVX512IFMA])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vpmadd52luq %zmm0,%zmm1,%zmm2");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512IFMA], 1, [Define if host toolchain supports AVX512IFMA])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VBMI
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VBMI], [
AC_MSG_CHECKING([whether host toolchain supports AVX512VBMI])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vpermb %zmm0,%zmm1,%zmm2");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512VBMI], 1, [Define if host toolchain supports AVX512VBMI])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512PF
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512PF], [
AC_MSG_CHECKING([whether host toolchain supports AVX512PF])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vgatherpf0dps (%rsi,%zmm0,4){%k1}");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512PF], 1, [Define if host toolchain supports AVX512PF])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512ER
dnl #
AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512ER], [
AC_MSG_CHECKING([whether host toolchain supports AVX512ER])
AC_LINK_IFELSE([AC_LANG_SOURCE([
[
int main()
{
__asm__ __volatile__("vexp2pd %zmm0,%zmm1");
return (0);
}
]])], [
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_AVX512ER], 1, [Define if host toolchain supports AVX512ER])
], [
AC_MSG_RESULT([no])
])
])
dnl #
dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VL
dnl #

2
module/Makefile.bsd
View File

@ -46,7 +46,7 @@ CFLAGS+= -D__KERNEL__ -DFREEBSD_NAMECACHE -DBUILDING_ZFS -D__BSD_VISIBLE=1 \
-D_SYS_VMEM_H_ -DKDTRACE_HOOKS -DCOMPAT_FREEBSD11
.if ${MACHINE_ARCH} == "amd64"
CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \
CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 \
-DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW
.endif