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gh-130213: Check availability of Intel SIMD types #130332

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gh-130213: Check availability of Intel SIMD types #130332

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53c8ab7
Check availability of Intel SIMD types
jmroot Feb 20, 2025
2897e64
📜🤖 Added by blurb_it.
blurb-it[bot] Feb 20, 2025
9f6d5a4
Address review comments
jmroot Feb 23, 2025
08a1928
Merge branch 'main' into check-simd-headers
picnixz Feb 25, 2025
bbf636e
Merge branch 'main' into check-simd-headers
ned-deily Feb 25, 2025
697787f
Fix comments changed in configure.ac but not in configure
ned-deily Feb 25, 2025
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Address review comments 
Check for SIMD -m flags before checking for header issues. Clarify
comment.
  • Loading branch information
@jmroot
jmroot committed Feb 23, 2025
commit 9f6d5a452baf0b20cb1a7097f5fce4d5c43431c3
105 changes: 53 additions & 52 deletions configure
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47 changes: 24 additions & 23 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -7849,15 +7849,15 @@ if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || tes
dnl This can be extended here to detect e.g. Power8, which HACL* should also support.
# Older versions of the mmintrin headers shipped with clang may error if they are
# included without using the corresponding -msse* option. See GH issue #130213.
AC_MSG_CHECKING([if __m128i can be used without -msse*])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <emmintrin.h>
#include <tmmintrin.h>
#include <smmintrin.h>],
[__m128i testvar;])],
[AC_MSG_RESULT([yes])
AX_CHECK_COMPILE_FLAG([-msse -msse2 -msse3 -msse4.1 -msse4.2],[
[LIBHACL_SIMD128_FLAGS="-msse -msse2 -msse3 -msse4.1 -msse4.2"]
AX_CHECK_COMPILE_FLAG([-msse -msse2 -msse3 -msse4.1 -msse4.2],[
[LIBHACL_SIMD128_FLAGS="-msse -msse2 -msse3 -msse4.1 -msse4.2"]
AC_MSG_CHECKING([if __m128i can be used without -msse*])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <emmintrin.h>
#include <tmmintrin.h>
#include <smmintrin.h>],
[__m128i testvar;])],
[AC_MSG_RESULT([yes])

AC_DEFINE([HACL_CAN_COMPILE_SIMD128], [1], [HACL* library can compile SIMD128 implementations])

Expand All @@ -7873,8 +7873,8 @@ if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || tes
AC_MSG_RESULT([standard])
fi

], [], [-Werror])
], [AC_MSG_RESULT([no])])
], [AC_MSG_RESULT([no])])
], [], [-Werror])
fi
AC_SUBST([LIBHACL_SIMD128_FLAGS])
AC_SUBST([LIBHACL_SIMD128_OBJS])
Expand All @@ -7887,16 +7887,17 @@ AC_SUBST([LIBHACL_SIMD128_OBJS])
# (https://developer.android.com/ndk/guides/abis#86-64), this is safe because we do a
# runtime CPUID check.
if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || test "$ANDROID_API_LEVEL" -ge 28; then
# Some versions of immintrin.h may not provide the __m256i type if no -mavx*
# option is used. See GH issue #130213.
AC_MSG_CHECKING([if __m256i can be used without -mavx2])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <immintrin.h>],
[__m256i testvar;])],
[AC_MSG_RESULT([yes])
AX_CHECK_COMPILE_FLAG([-mavx2],[
[LIBHACL_SIMD256_FLAGS="-mavx2"]
AC_DEFINE([HACL_CAN_COMPILE_SIMD256], [1], [HACL* library can compile SIMD256 implementations])
# Some versions of immintrin.h require -mavx* to provide the __m256i type
# but blake2module.c must not be compiled with those options and may
# include libintvector.h which contains __m256i. See GH issue #130213.
AX_CHECK_COMPILE_FLAG([-mavx2],[
[LIBHACL_SIMD256_FLAGS="-mavx2"]
AC_MSG_CHECKING([if __m256i can be used without -mavx2])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <immintrin.h>],
[__m256i testvar;])],
[AC_MSG_RESULT([yes])
AC_DEFINE([HACL_CAN_COMPILE_SIMD256], [1], [HACL* library can compile SIMD256 implementations])

# macOS universal2 builds *support* the -mavx2 compiler flag because it's
# available on x86_64; but the HACL SIMD256 build then fails because the
Expand All @@ -7910,8 +7911,8 @@ if test "$ac_sys_system" != "Linux-android" -a "$ac_sys_system" != "WASI" || tes
[LIBHACL_SIMD256_OBJS="Modules/_hacl/Hacl_Hash_Blake2b_Simd256.o"]
AC_MSG_RESULT([standard])
fi
], [], [-Werror])
], [AC_MSG_RESULT([no])])
], [AC_MSG_RESULT([no])])
], [], [-Werror])
fi
AC_SUBST([LIBHACL_SIMD256_FLAGS])
AC_SUBST([LIBHACL_SIMD256_OBJS])
Expand Down