X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=scripts%2Fax_ext.m4;fp=scripts%2Fax_ext.m4;h=78ad90b0450a74371ad1daa9796d228682fd3aac;hb=e8462f7431582627e44906239077f1c696eefba1;hp=0000000000000000000000000000000000000000;hpb=9bdb753c5363d92b7e5698d75a967dc1fbc76b1a;p=ctsim.git

diff --git a/scripts/ax_ext.m4 b/scripts/ax_ext.m4
new file mode 100644
index 0000000..78ad90b
--- /dev/null
+++ b/scripts/ax_ext.m4
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+# ===========================================================================
+#          http://www.gnu.org/software/autoconf-archive/ax_ext.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_EXT
+#
+# DESCRIPTION
+#
+#   Find supported SIMD extensions by requesting cpuid. When an SIMD
+#   extension is found, the -m"simdextensionname" is added to SIMD_FLAGS
+#   (only if compilator support it) (ie : if "sse2" is available "-msse2" is
+#   added to SIMD_FLAGS)
+#
+#   This macro calls:
+#
+#     AC_SUBST(SIMD_FLAGS)
+#
+#   And defines:
+#
+#     HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 /
+#     HAVE_SSE41 / HAVE_SSE42 / HAVE_AVX
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Christophe Tournayre <turn3r@users.sourceforge.net>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+#
+# MODIFIED
+#   * March 23, 2012 Joseph D. Gaeddert <jgaedder@vt.edu>
+#     Including tests for proper intrinsics header files in addition to cpu
+#     capabilities.
+#     MMX           :   mmintrin.h
+#     SSE           :   xmmintrin.h
+#     SSE2          :   emmintrin.h
+#     SSE3          :   pmmintrin.h
+#     SSSE3         :   tmmintrin.h
+#     SSE4.1/4.2    :   smmintrin.h
+#     AVX           :   immintrin.h
+
+#serial 9
+
+AC_DEFUN([AX_EXT],
+[
+  AC_REQUIRE([AX_GCC_X86_CPUID])
+
+  AX_GCC_X86_CPUID(0x00000001)
+  ecx=0
+  edx=0
+  if test "$ax_cv_gcc_x86_cpuid_0x00000001" != "unknown";
+  then
+     ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
+     edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
+  fi
+
+ AC_CHECK_HEADERS(mmintrin.h xmmintrin.h emmintrin.h pmmintrin.h tmmintrin.h smmintrin.h immintrin.h)
+
+ AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
+  [
+    ax_cv_have_mmx_ext=no
+    if test "$((0x$edx>>23&0x01))" = 1; then
+      ax_cv_have_mmx_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
+  [
+    ax_cv_have_sse_ext=no
+    if test "$((0x$edx>>25&0x01))" = 1; then
+      ax_cv_have_sse_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
+  [
+    ax_cv_have_sse2_ext=no
+    if test "$((0x$edx>>26&0x01))" = 1; then
+      ax_cv_have_sse2_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
+  [
+    ax_cv_have_sse3_ext=no
+    if test "$((0x$ecx&0x01))" = 1; then
+      ax_cv_have_sse3_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
+  [
+    ax_cv_have_ssse3_ext=no
+    if test "$((0x$ecx>>9&0x01))" = 1; then
+      ax_cv_have_ssse3_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
+  [
+    ax_cv_have_sse41_ext=no
+    if test "$((0x$ecx>>19&0x01))" = 1; then
+      ax_cv_have_sse41_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
+  [
+    ax_cv_have_sse42_ext=no
+    if test "$((0x$ecx>>20&0x01))" = 1; then
+      ax_cv_have_sse42_ext=yes
+    fi
+  ])
+
+ AC_CACHE_CHECK([whether avx is supported], [ax_cv_have_avx_ext],
+  [
+    ax_cv_have_avx_ext=no
+    if test "$((0x$ecx>>28&0x01))" = 1; then
+      ax_cv_have_avx_ext=yes
+    fi
+  ])
+
+  if [ test "$ax_cv_have_mmx_ext" = yes && test "$ac_cv_header_mmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_MMX,, [Support MMX instructions])
+    AX_CHECK_COMPILE_FLAG(-mmmx, SIMD_FLAGS="$SIMD_FLAGS -mmmx", [])
+  fi
+
+  if [ test "$ax_cv_have_sse_ext" = yes && test "$ac_cv_header_xmmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSE,, [Support SSE (Streaming SIMD Extensions) instructions])
+    AX_CHECK_COMPILE_FLAG(-msse, SIMD_FLAGS="$SIMD_FLAGS -msse", [])
+  fi
+
+  if [ test "$ax_cv_have_sse2_ext" = yes && test "$ac_cv_header_emmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSE2,, [Support SSE2 (Streaming SIMD Extensions 2) instructions])
+    AX_CHECK_COMPILE_FLAG(-msse2, SIMD_FLAGS="$SIMD_FLAGS -msse2", [])
+  fi
+
+  if [ test "$ax_cv_have_sse3_ext" = yes && test "$ac_cv_header_pmmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSE3,, [Support SSE3 (Streaming SIMD Extensions 3) instructions])
+    AX_CHECK_COMPILE_FLAG(-msse3, SIMD_FLAGS="$SIMD_FLAGS -msse3", [])
+  fi
+
+  if [ test "$ax_cv_have_ssse3_ext" = yes && test "$ac_cv_header_tmmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSSE3,, [Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
+    AX_CHECK_COMPILE_FLAG(-mssse3, SIMD_FLAGS="$SIMD_FLAGS -mssse3", [])
+  fi
+
+  if [ test "$ax_cv_have_sse41_ext" = yes && test "$ac_cv_header_smmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSE41,, [Support SSE4.1 (Streaming SIMD Extensions 4.1) instructions])
+    AX_CHECK_COMPILE_FLAG(-msse4.1, SIMD_FLAGS="$SIMD_FLAGS -msse4.1", [])
+  fi
+
+  if [ test "$ax_cv_have_sse42_ext" = yes && test "$ac_cv_header_smmintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_SSE42, 1,[Support SSE4.2 (Streaming SIMD Extensions 4.2) instructions])
+    AX_CHECK_COMPILE_FLAG(-msse4.2, SIMD_FLAGS="$SIMD_FLAGS -msse4.2", [])
+  fi
+
+  if [ test "$ax_cv_have_avx_ext" = yes && test "$ac_cv_header_immintrin_h" = yes ]; then
+    AC_DEFINE(HAVE_AVX,,[Support AVX (Advanced Vector Extensions) instructions])
+    AX_CHECK_COMPILE_FLAG(-mavx, SIMD_FLAGS="$SIMD_FLAGS -mavx", [])
+  fi
+
+  AC_SUBST(SIMD_FLAGS)
+])