Add support for AVX-512 family of instruction sets

This patch adds compiler and runtime tests (user and kernel) for following
instruction sets: avx512f, avx512cd, avx512er, avx512pf, avx512bw, avx512dq,
avx512vl, avx512ifma, avx512vbmi.

note: Linux support for AVX-512F (Foundation) instruction set started with
linux v3.15

Signed-off-by: Gvozden Neskovic <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #4952

1 files changed, 189 insertions, 0 deletions

diff --git a/config/toolchain-simd.m4 b/config/toolchain-simd.m4
index 0f8c1f2d9..29abbbb5b 100644
--- a/config/toolchain-simd.m4
+++ b/config/toolchain-simd.m4
@@ -12,6 +12,15 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD], [
 			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
 			;;
 	esac
 ])
@@ -170,3 +179,183 @@ AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX2], [
 		AC_MSG_RESULT([no])
 	])
 ])
+
+dnl #
+dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512F
+dnl #
+AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512F], [
+	AC_MSG_CHECKING([whether host toolchain supports AVX512F])
+
+	AC_LINK_IFELSE([AC_LANG_SOURCE([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vpandd %zmm0,%zmm1,%zmm2");
+		}
+	]])], [
+		AC_MSG_RESULT([yes])
+		AC_DEFINE([HAVE_AVX512F], 1, [Define if host toolchain supports AVX512F])
+	], [
+		AC_MSG_RESULT([no])
+	])
+])
+
+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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vplzcntd %zmm0,%zmm1");
+		}
+	]])], [
+		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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vandpd %zmm0,%zmm1,%zmm2");
+		}
+	]])], [
+		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 #
+AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512BW], [
+	AC_MSG_CHECKING([whether host toolchain supports AVX512BW])
+
+	AC_LINK_IFELSE([AC_LANG_SOURCE([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vpshufb %zmm0,%zmm1,%zmm2");
+		}
+	]])], [
+		AC_MSG_RESULT([yes])
+		AC_DEFINE([HAVE_AVX512BW], 1, [Define if host toolchain supports AVX512BW])
+	], [
+		AC_MSG_RESULT([no])
+	])
+])
+
+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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vpmadd52luq %zmm0,%zmm1,%zmm2");
+		}
+	]])], [
+		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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vpermb %zmm0,%zmm1,%zmm2");
+		}
+	]])], [
+		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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vgatherpf0dps (%rsi,%zmm0,4){%k1}");
+		}
+	]])], [
+		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([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vexp2pd %zmm0,%zmm1");
+		}
+	]])], [
+		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 #
+AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX512VL], [
+	AC_MSG_CHECKING([whether host toolchain supports AVX512VL])
+
+	AC_LINK_IFELSE([AC_LANG_SOURCE([
+	[
+		void main()
+		{
+			__asm__ __volatile__("vpabsq %zmm0,%zmm1");
+		}
+	]])], [
+		AC_MSG_RESULT([yes])
+		AC_DEFINE([HAVE_AVX512VL], 1, [Define if host toolchain supports AVX512VL])
+	], [
+		AC_MSG_RESULT([no])
+	])
+])