From 8e57c956bd0152f7d1fd3e7a5f4c74b8299a85d2 Mon Sep 17 00:00:00 2001 From: Alexey Yakovenko Date: Sun, 13 Sep 2009 11:03:23 +0200 Subject: improved sse2 detection --- acinclude.m4 | 222 ++++++++++------------------------------------------------- 1 file changed, 36 insertions(+), 186 deletions(-) (limited to 'acinclude.m4') diff --git a/acinclude.m4 b/acinclude.m4 index 81aeedfb..64cf8f41 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -1,12 +1,24 @@ # =========================================================================== -# http://autoconf-archive.cryp.to/ax_check_compiler_flags.html +# http://www.nongnu.org/autoconf-archive/ax_check_compiler_flags.html # =========================================================================== # +# SYNOPSIS +# +# AX_CHECK_COMPILER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE]) +# +# DESCRIPTION # -# COPYLEFT +# Check whether the given compiler FLAGS work with the current language's +# compiler, or whether they give an error. (Warnings, however, are +# ignored.) # -# Copyright (c) 2008 Steven G. Johnson -# Copyright (c) 2008 Matteo Frigo +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# LICENSE +# +# Copyright (c) 2009 Steven G. Johnson +# Copyright (c) 2009 Matteo Frigo # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the @@ -21,205 +33,43 @@ # You should have received a copy of the GNU General Public License along # with this program. If not, see . # +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. AC_DEFUN([AX_CHECK_COMPILER_FLAGS], [AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1]) dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname: AS_LITERAL_IF([$1], - [AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1), [ + [AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1]), [ ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS _AC_LANG_PREFIX[]FLAGS="$1" AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], - AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes, - AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no) + AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes, + AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no) _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])], [ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS _AC_LANG_PREFIX[]FLAGS="$1" AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], - eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes, - eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no) + eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes, + eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no) _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS]) -eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1) +eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1]) AC_MSG_RESULT($ax_check_compiler_flags) if test "x$ax_check_compiler_flags" = xyes; then - m4_default([$2], :) + m4_default([$2], :) else - m4_default([$3], :) + m4_default([$3], :) fi ])dnl AX_CHECK_COMPILER_FLAGS - - -# =========================================================================== -# http://autoconf-archive.cryp.to/ax_gcc_x86_cpuid.html -# =========================================================================== -# -# -# COPYLEFT -# -# Copyright (c) 2008 Steven G. Johnson -# Copyright (c) 2008 Matteo Frigo -# -# This program is free software: you can redistribute it and/or modify it -# under the terms of the GNU General Public License as published by the -# Free Software Foundation, either version 3 of the License, or (at your -# option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General -# Public License for more details. -# -# You should have received a copy of the GNU General Public License along -# with this program. If not, see . -# - - -AC_DEFUN([AX_GCC_X86_CPUID], -[AC_REQUIRE([AC_PROG_CC]) -AC_LANG_PUSH([C]) -AC_CACHE_CHECK(for x86 cpuid $1 output, ax_cv_gcc_x86_cpuid_$1, - [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include ], [ - int op = $1, eax, ebx, ecx, edx; - FILE *f; - /* 64-bit code is easy */ - if (sizeof(long) == 8) { - __asm__("cpuid" - : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) - : "a" (op)); - } else { - __asm__("pushl %%ebx \n\t" - "cpuid \n\t" - "movl %%ebx, %1 \n\t" - "popl %%ebx \n\t" - : "=a" (eax), "=r" (ebx), "=c" (ecx), "=d" (edx) - : "a" (op)); - } - f = fopen("conftest_cpuid", "w"); if (!f) return 1; - fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx); - fclose(f); - return 0; -])], - [ax_cv_gcc_x86_cpuid_$1=`cat conftest_cpuid`; rm -f conftest_cpuid], - [ax_cv_gcc_x86_cpuid_$1=unknown; rm -f conftest_cpuid], - [ax_cv_gcc_x86_cpuid_$1=unknown])]) -AC_LANG_POP([C]) -]) - - -# =========================================================================== -# http://www.nongnu.org/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 -# -# LICENSE -# -# Copyright (c) 2008 Christophe Tournayre -# -# 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. - -AC_DEFUN([AX_EXT], -[ - AC_REQUIRE([AX_GCC_X86_CPUID]) - - AX_GCC_X86_CPUID(0x00000001) - ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3` - edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4` - if test "x$edx" = "xunknown"; then - ax_have_mmx_ext=no - ax_have_sse_ext=no - ax_have_sse_ext=no - ax_have_sse2_ext=no - ax_have_sse3_ext=no - ax_have_ssse3_ext=no - else - - AC_CACHE_CHECK([whether mmx is supported], [ax_have_mmx_ext], - [ - ax_have_mmx_ext=no - if test "$((0x$edx>>23&0x01))" = 1; then - ax_have_mmx_ext=yes - fi - ]) - - AC_CACHE_CHECK([whether sse is supported], [ax_have_sse_ext], - [ - ax_have_sse_ext=no - if test "$((0x$edx>>25&0x01))" = 1; then - ax_have_sse_ext=yes - fi - ]) - - AC_CACHE_CHECK([whether sse2 is supported], [ax_have_sse2_ext], - [ - ax_have_sse2_ext=no - if test "$((0x$edx>>26&0x01))" = 1; then - ax_have_sse2_ext=yes - fi - ]) - - AC_CACHE_CHECK([whether sse3 is supported], [ax_have_sse3_ext], - [ - ax_have_sse3_ext=no - if test "$((0x$ecx&0x01))" = 1; then - ax_have_sse3_ext=yes - fi - ]) - - AC_CACHE_CHECK([whether ssse3 is supported], [ax_have_ssse3_ext], - [ - ax_have_ssse3_ext=no - if test "$((0x$ecx>>9&0x01))" = 1; then - ax_have_ssse3_ext=yes - fi - ]) - - if test "$ax_have_mmx_ext" = yes; then - AC_DEFINE(HAVE_MMX,,[Support mmx instructions]) - AX_CHECK_COMPILER_FLAGS(-mmmx, SIMD_FLAGS="$SIMD_FLAGS -mmmx", []) - fi - - if test "$ax_have_sse_ext" = yes; then - AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions]) - AX_CHECK_COMPILER_FLAGS(-msse, SIMD_FLAGS="$SIMD_FLAGS -msse", []) - fi - - if test "$ax_have_sse2_ext" = yes; then - AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions]) - AX_CHECK_COMPILER_FLAGS(-msse2, SIMD_FLAGS="$SIMD_FLAGS -msse2", []) - fi - - if test "$ax_have_sse3_ext" = yes; then - AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions]) - AX_CHECK_COMPILER_FLAGS(-msse3, SIMD_FLAGS="$SIMD_FLAGS -msse3", []) - fi - - if test "$ax_have_ssse3_ext" = yes; then - AC_DEFINE(HAVE_SSSE3,,[Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions]) - fi - fi - - AC_SUBST(SIMD_FLAGS) -]) - -- cgit v1.2.3