config/toolchain-simd.m4

   1 dnl #
   2 dnl # Checks if host toolchain supports SIMD instructions
   3 dnl #
   4 AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD], [
   5         case "$host_cpu" in
   6                 x86_64 | x86 | i686)
   7                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE
   8                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2
   9                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3
  10                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSSE3
  11                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_1
  12                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2
  13                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX
  14                         ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX2
  15                         ;;
  16         esac
  17 ])
  18
  19 dnl #
  20 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE
  21 dnl #
  22 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE], [
  23         AC_MSG_CHECKING([whether host toolchain supports SSE])
  24
  25         AC_LINK_IFELSE([AC_LANG_SOURCE([[
  26                 void main()
  27                 {
  28                         __asm__ __volatile__("xorps %xmm0, %xmm1");
  29                 }
  30         ]])], [
  31                 AC_DEFINE([HAVE_SSE], 1, [Define if host toolchain supports SSE])
  32                 AC_MSG_RESULT([yes])
  33         ], [
  34                 AC_MSG_RESULT([no])
  35         ])
  36 ])
  37
  38 dnl #
  39 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2
  40 dnl #
  41 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE2], [
  42         AC_MSG_CHECKING([whether host toolchain supports SSE2])
  43
  44         AC_LINK_IFELSE([AC_LANG_SOURCE([[
  45                 void main()
  46                 {
  47                         __asm__ __volatile__("pxor %xmm0, %xmm1");
  48                 }
  49         ]])], [
  50                 AC_DEFINE([HAVE_SSE2], 1, [Define if host toolchain supports SSE2])
  51                 AC_MSG_RESULT([yes])
  52         ], [
  53                 AC_MSG_RESULT([no])
  54         ])
  55 ])
  56
  57 dnl #
  58 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3
  59 dnl #
  60 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE3], [
  61         AC_MSG_CHECKING([whether host toolchain supports SSE3])
  62
  63         AC_LINK_IFELSE([AC_LANG_SOURCE([[
  64                 void main()
  65                 {
  66                         char v[16];
  67                         __asm__ __volatile__("lddqu %0,%%xmm0" :: "m"(v[0]));
  68                 }
  69         ]])], [
  70                 AC_DEFINE([HAVE_SSE3], 1, [Define if host toolchain supports SSE3])
  71                 AC_MSG_RESULT([yes])
  72         ], [
  73                 AC_MSG_RESULT([no])
  74         ])
  75 ])
  76
  77 dnl #
  78 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSSE3
  79 dnl #
  80 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSSE3], [
  81         AC_MSG_CHECKING([whether host toolchain supports SSSE3])
  82
  83         AC_LINK_IFELSE([AC_LANG_SOURCE([[
  84                 void main()
  85                 {
  86                         __asm__ __volatile__("pshufb %xmm0,%xmm1");
  87                 }
  88         ]])], [
  89                 AC_DEFINE([HAVE_SSSE3], 1, [Define if host toolchain supports SSSE3])
  90                 AC_MSG_RESULT([yes])
  91         ], [
  92                 AC_MSG_RESULT([no])
  93         ])
  94 ])
  95
  96 dnl #
  97 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_1
  98 dnl #
  99 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_1], [
 100         AC_MSG_CHECKING([whether host toolchain supports SSE4.1])
 101
 102         AC_LINK_IFELSE([AC_LANG_SOURCE([[
 103                 void main()
 104                 {
 105                         __asm__ __volatile__("pmaxsb %xmm0,%xmm1");
 106                 }
 107         ]])], [
 108                 AC_DEFINE([HAVE_SSE4_1], 1, [Define if host toolchain supports SSE4.1])
 109                 AC_MSG_RESULT([yes])
 110         ], [
 111                 AC_MSG_RESULT([no])
 112         ])
 113 ])
 114
 115 dnl #
 116 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2
 117 dnl #
 118 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_SSE4_2], [
 119         AC_MSG_CHECKING([whether host toolchain supports SSE4.2])
 120
 121         AC_LINK_IFELSE([AC_LANG_SOURCE([[
 122                 void main()
 123                 {
 124                         __asm__ __volatile__("pcmpgtq %xmm0, %xmm1");
 125                 }
 126         ]])], [
 127                 AC_DEFINE([HAVE_SSE4_2], 1, [Define if host toolchain supports SSE4.2])
 128                 AC_MSG_RESULT([yes])
 129         ], [
 130                 AC_MSG_RESULT([no])
 131         ])
 132 ])
 133
 134 dnl #
 135 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX
 136 dnl #
 137 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX], [
 138         AC_MSG_CHECKING([whether host toolchain supports AVX])
 139
 140         AC_LINK_IFELSE([AC_LANG_SOURCE([[
 141                 void main()
 142                 {
 143                         char v[32];
 144                         __asm__ __volatile__("vmovdqa %0,%%ymm0" :: "m"(v[0]));
 145                 }
 146         ]])], [
 147                 AC_MSG_RESULT([yes])
 148                 AC_DEFINE([HAVE_AVX], 1, [Define if host toolchain supports AVX])
 149         ], [
 150                 AC_MSG_RESULT([no])
 151         ])
 152 ])
 153
 154 dnl #
 155 dnl # ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX2
 156 dnl #
 157 AC_DEFUN([ZFS_AC_CONFIG_TOOLCHAIN_CAN_BUILD_AVX2], [
 158         AC_MSG_CHECKING([whether host toolchain supports AVX2])
 159
 160         AC_LINK_IFELSE([AC_LANG_SOURCE([
 161         [
 162                 void main()
 163                 {
 164                         __asm__ __volatile__("vpshufb %ymm0,%ymm1,%ymm2");
 165                 }
 166         ]])], [
 167                 AC_MSG_RESULT([yes])
 168                 AC_DEFINE([HAVE_AVX2], 1, [Define if host toolchain supports AVX2])
 169         ], [
 170                 AC_MSG_RESULT([no])
 171         ])
 172 ])