mirror of
https://github.com/RangeNetworks/openbts.git
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00d6835d72
This large patch replaced the convolve() call with an SSE vector enabled version. The lower C and SSE intrinsic based code operates on fixed and aligned vectors for the filter taps. The storage format of interleaved I/Q for both complex and real vectors is maintained. SSE filter tap values must: 1. Start 16-byte aligned 2. Number with a multiple of 4 between 4 and 20 for real taps 3. Number with a multiple of 4 for complex taps Non-compliant values will fall back to non-SSE usage. Fixed length iterators mean that head and tail cases may require reallocation of the input vector, which is automatically handled by the upper C++ interface. Other calls are affected by these changes and adjusted or rewritten accordingly. The underlying algorithms, however, are unchanged. generateGSMPulse() analyzeTrafficBurst() detectRACHBurst() Intel SSE configuration is automatically detected and configured at build time with Autoconf macros. Signed-off-by: Thomas Tsou <tom@tsou.cc> git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@6732 19bc5d8c-e614-43d4-8b26-e1612bc8e597
222 lines
7.5 KiB
Plaintext
222 lines
7.5 KiB
Plaintext
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_ext.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_EXT
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#
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# DESCRIPTION
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#
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# Find supported SIMD extensions by requesting cpuid. When an SIMD
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# extension is found, the -m"simdextensionname" is added to SIMD_FLAGS if
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# compiler supports it. For example, if "sse2" is available, then "-msse2"
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# is added to SIMD_FLAGS.
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#
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# This macro calls:
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#
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# AC_SUBST(SIMD_FLAGS)
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#
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# And defines:
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#
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# HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 / HAVE_SSE4.1 / HAVE_SSE4.2 / HAVE_AVX
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#
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# LICENSE
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#
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# Copyright (c) 2007 Christophe Tournayre <turn3r@users.sourceforge.net>
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# Copyright (c) 2013 Michael Petch <mpetch@capp-sysware.com>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 12
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AC_DEFUN([AX_EXT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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case $host_cpu in
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i[[3456]]86*|x86_64*|amd64*)
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AC_REQUIRE([AX_GCC_X86_CPUID])
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AC_REQUIRE([AX_GCC_X86_AVX_XGETBV])
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AX_GCC_X86_CPUID(0x00000001)
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ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
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edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
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AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
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[
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ax_cv_have_mmx_ext=no
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if test "$((0x$edx>>23&0x01))" = 1; then
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ax_cv_have_mmx_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
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[
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ax_cv_have_sse_ext=no
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if test "$((0x$edx>>25&0x01))" = 1; then
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ax_cv_have_sse_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
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[
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ax_cv_have_sse2_ext=no
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if test "$((0x$edx>>26&0x01))" = 1; then
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ax_cv_have_sse2_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
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[
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ax_cv_have_sse3_ext=no
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if test "$((0x$ecx&0x01))" = 1; then
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ax_cv_have_sse3_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
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[
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ax_cv_have_ssse3_ext=no
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if test "$((0x$ecx>>9&0x01))" = 1; then
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ax_cv_have_ssse3_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
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[
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ax_cv_have_sse41_ext=no
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if test "$((0x$ecx>>19&0x01))" = 1; then
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ax_cv_have_sse41_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
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[
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ax_cv_have_sse42_ext=no
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if test "$((0x$ecx>>20&0x01))" = 1; then
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ax_cv_have_sse42_ext=yes
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fi
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])
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AC_CACHE_CHECK([whether avx is supported by processor], [ax_cv_have_avx_cpu_ext],
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[
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ax_cv_have_avx_cpu_ext=no
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if test "$((0x$ecx>>28&0x01))" = 1; then
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ax_cv_have_avx_cpu_ext=yes
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fi
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])
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if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then
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AX_GCC_X86_AVX_XGETBV(0x00000000)
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xgetbv_eax="0"
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if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then
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xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1`
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fi
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AC_CACHE_CHECK([whether avx is supported by operating system], [ax_cv_have_avx_ext],
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[
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ax_cv_have_avx_ext=no
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if test "$((0x$ecx>>27&0x01))" = 1; then
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if test "$((0x$xgetbv_eax&0x6))" = 6; then
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ax_cv_have_avx_ext=yes
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fi
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fi
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])
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if test x"$ax_cv_have_avx_ext" = x"no"; then
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AC_MSG_WARN([Your processor supports AVX, but your operating system doesn't])
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fi
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fi
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if test "$ax_cv_have_mmx_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-mmmx, ax_cv_support_mmx_ext=yes, [])
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if test x"$ax_cv_support_mmx_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -mmmx"
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AC_DEFINE(HAVE_MMX,,[Support mmx instructions])
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else
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AC_MSG_WARN([Your processor supports mmx instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_sse_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-msse, ax_cv_support_sse_ext=yes, [])
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if test x"$ax_cv_support_sse_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -msse"
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AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
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else
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AC_MSG_WARN([Your processor supports sse instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_sse2_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-msse2, ax_cv_support_sse2_ext=yes, [])
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if test x"$ax_cv_support_sse2_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -msse2"
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AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions])
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else
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AC_MSG_WARN([Your processor supports sse2 instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_sse3_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
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if test x"$ax_cv_support_sse3_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -msse3"
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AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
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else
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AC_MSG_WARN([Your processor supports sse3 instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_ssse3_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-mssse3, ax_cv_support_ssse3_ext=yes, [])
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if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -mssse3"
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AC_DEFINE(HAVE_SSSE3,,[Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
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else
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AC_MSG_WARN([Your processor supports ssse3 instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_sse41_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-msse4.1, ax_cv_support_sse41_ext=yes, [])
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if test x"$ax_cv_support_sse41_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -msse4.1"
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AC_DEFINE(HAVE_SSE4_1,,[Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions])
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else
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AC_MSG_WARN([Your processor supports sse4.1 instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_sse42_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-msse4.2, ax_cv_support_sse42_ext=yes, [])
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if test x"$ax_cv_support_sse42_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -msse4.2"
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AC_DEFINE(HAVE_SSE4_2,,[Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions])
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else
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AC_MSG_WARN([Your processor supports sse4.2 instructions but not your compiler, can you try another compiler?])
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fi
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fi
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if test "$ax_cv_have_avx_ext" = yes; then
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AX_CHECK_COMPILE_FLAG(-mavx, ax_cv_support_avx_ext=yes, [])
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if test x"$ax_cv_support_avx_ext" = x"yes"; then
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SIMD_FLAGS="$SIMD_FLAGS -mavx"
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AC_DEFINE(HAVE_AVX,,[Support AVX (Advanced Vector Extensions) instructions])
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else
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AC_MSG_WARN([Your processor supports avx instructions but not your compiler, can you try another compiler?])
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fi
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fi
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;;
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esac
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AC_SUBST(SIMD_FLAGS)
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])
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