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autotools: intel cpu features detection Rename SIMD to INTEL for clarity. Instead of agregating all flags in INTEL_FLAGS, create individual flags for each feature (INTEL_SSE2_FLAGS etc.) for finer control in the makefiles. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-26 10:11:48 +00:00
AC_DEFUN([AX_INTEL_FEATURES],
autotools: AX_SSE detects the compiler SSE capabilities For each SSE feature supported by the compiler * add the corresponding -msse* flag * define HAVE_SSE* Remove AX_EXT because it decides based on the CPU capabilities of the machine compiling the binary which may or may not be the one running them. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-21 12:07:32 +00:00
[
AC_REQUIRE([AC_CANONICAL_HOST])
erasure-code: do not attempt to compile SSE4 on i386 SSE4 are only not availabe on older CPUs. Although the compiler could probably generate the code, there is no point in doing so. The SSE4.1, SSE4.2 and PCLMUL cpu features are only tested if the target CPU is AMD64 or x86_64. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-29 09:34:29 +00:00
case $target_cpu in
i[[3456]]86*|x86_64*|amd64*)
AX_CHECK_COMPILE_FLAG(-msse, ax_cv_support_sse_ext=yes, [])
if test x"$ax_cv_support_sse_ext" = x"yes"; then
INTEL_SSE_FLAGS="-msse -DINTEL_SSE"
AC_SUBST(INTEL_SSE_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSE_FLAGS"
AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
fi
AX_CHECK_COMPILE_FLAG(-msse2, ax_cv_support_sse2_ext=yes, [])
if test x"$ax_cv_support_sse2_ext" = x"yes"; then
INTEL_SSE2_FLAGS="-msse2 -DINTEL_SSE2"
AC_SUBST(INTEL_SSE2_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSE2_FLAGS"
AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions])
fi
AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
if test x"$ax_cv_support_sse3_ext" = x"yes"; then
autotools: s/ssse3/sse3/ typo Reported-by: Justin Erenkrantz <justin@erenkrantz.com> Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-30 15:57:22 +00:00
INTEL_SSE3_FLAGS="-msse3 -DINTEL_SSE3"
erasure-code: do not attempt to compile SSE4 on i386 SSE4 are only not availabe on older CPUs. Although the compiler could probably generate the code, there is no point in doing so. The SSE4.1, SSE4.2 and PCLMUL cpu features are only tested if the target CPU is AMD64 or x86_64. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-29 09:34:29 +00:00
AC_SUBST(INTEL_SSE3_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSE3_FLAGS"
AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
fi
AX_CHECK_COMPILE_FLAG(-mssse3, ax_cv_support_ssse3_ext=yes, [])
if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
INTEL_SSSE3_FLAGS="-mssse3 -DINTEL_SSSE3"
AC_SUBST(INTEL_SSSE3_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSSE3_FLAGS"
AC_DEFINE(HAVE_SSSE3,,[Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
fi
;;
esac
autotools: AX_SSE detects the compiler SSE capabilities For each SSE feature supported by the compiler * add the corresponding -msse* flag * define HAVE_SSE* Remove AX_EXT because it decides based on the CPU capabilities of the machine compiling the binary which may or may not be the one running them. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-21 12:07:32 +00:00
erasure-code: do not attempt to compile SSE4 on i386 SSE4 are only not availabe on older CPUs. Although the compiler could probably generate the code, there is no point in doing so. The SSE4.1, SSE4.2 and PCLMUL cpu features are only tested if the target CPU is AMD64 or x86_64. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-29 09:34:29 +00:00
case $target_cpu in
x86_64*|amd64*)
AX_CHECK_COMPILE_FLAG(-mpclmul, ax_cv_support_pclmuldq_ext=yes, [])
if test x"$ax_cv_support_pclmuldq_ext" = x"yes"; then
INTEL_PCLMUL_FLAGS="-mpclmul -DINTEL_SSE4_PCLMUL"
AC_SUBST(INTEL_PCLMUL_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_PCLMUL_FLAGS"
AC_DEFINE(HAVE_PCLMUL,,[Support (PCLMUL) Carry-Free Muliplication])
fi
AX_CHECK_COMPILE_FLAG(-msse4.1, ax_cv_support_sse41_ext=yes, [])
if test x"$ax_cv_support_sse41_ext" = x"yes"; then
INTEL_SSE4_1_FLAGS="-msse4.1 -DINTEL_SSE4"
AC_SUBST(INTEL_SSE4_1_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSE4_1_FLAGS"
AC_DEFINE(HAVE_SSE4_1,,[Support SSE4.1 (Streaming SIMD Extensions 4.1) instructions])
fi
AX_CHECK_COMPILE_FLAG(-msse4.2, ax_cv_support_sse42_ext=yes, [])
if test x"$ax_cv_support_sse42_ext" = x"yes"; then
INTEL_SSE4_2_FLAGS="-msse4.2 -DINTEL_SSE4"
AC_SUBST(INTEL_SSE4_2_FLAGS)
INTEL_FLAGS="$INTEL_FLAGS $INTEL_SSE4_2_FLAGS"
AC_DEFINE(HAVE_SSE4_2,,[Support SSE4.2 (Streaming SIMD Extensions 4.2) instructions])
fi
;;
esac
autotools: AX_SSE detects the compiler SSE capabilities For each SSE feature supported by the compiler * add the corresponding -msse* flag * define HAVE_SSE* Remove AX_EXT because it decides based on the CPU capabilities of the machine compiling the binary which may or may not be the one running them. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-21 12:07:32 +00:00
autotools: intel cpu features detection Rename SIMD to INTEL for clarity. Instead of agregating all flags in INTEL_FLAGS, create individual flags for each feature (INTEL_SSE2_FLAGS etc.) for finer control in the makefiles. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-26 10:11:48 +00:00
AC_SUBST(INTEL_FLAGS)
autotools: AX_SSE detects the compiler SSE capabilities For each SSE feature supported by the compiler * add the corresponding -msse* flag * define HAVE_SSE* Remove AX_EXT because it decides based on the CPU capabilities of the machine compiling the binary which may or may not be the one running them. Signed-off-by: Loic Dachary <loic@dachary.org>
2014-03-21 12:07:32 +00:00
])