Message ID | 54bcc4776d50207d54ca1eae32bdffaa6ffe3c01.1602515612.git.fweimer@redhat.com |
---|---|
State | New |
Headers | show |
Series | glibc-hwcaps support for LD_LIBRARY_PATH | expand |
On Mon, Oct 12, 2020 at 8:23 AM Florian Weimer via Libc-alpha <libc-alpha@sourceware.org> wrote: > > The subdirectories match those in the x86-64 psABI: > > https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c > --- > sysdeps/x86_64/Makefile | 36 +++++++++++++++- > sysdeps/x86_64/dl-hwcaps-subdirs.c | 66 ++++++++++++++++++++++++++++++ > sysdeps/x86_64/tst-glibc-hwcaps.c | 65 +++++++++++++++++++++++++++++ > 3 files changed, 166 insertions(+), 1 deletion(-) > create mode 100644 sysdeps/x86_64/dl-hwcaps-subdirs.c > create mode 100644 sysdeps/x86_64/tst-glibc-hwcaps.c > > diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile > index 42b97c5cc7..16030715e7 100644 > --- a/sysdeps/x86_64/Makefile > +++ b/sysdeps/x86_64/Makefile > @@ -144,7 +144,41 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS) > CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS) > CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS) > endif > -endif > + > +$(objpfx)tst-glibc-hwcaps: \ > + $(objpfx)markermod2-1.so $(objpfx)markermod3-1.so $(objpfx)markermod4-1.so > +$(objpfx)tst-glibc-hwcaps.out: \ > + $(objpfx)markermod2.so \ > + $(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so \ > + $(objpfx)markermod3.so \ > + $(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so \ > + $(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so \ > + $(objpfx)markermod4.so \ > + $(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so \ > + $(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so \ > + $(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so \ > + > +$(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so: $(objpfx)markermod2-2.so > + $(make-target-directory) > + cp $< $@ > +$(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so: $(objpfx)markermod3-2.so > + $(make-target-directory) > + cp $< $@ > +$(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so: $(objpfx)markermod3-3.so > + $(make-target-directory) > + cp $< $@ > +$(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so: $(objpfx)markermod4-2.so > + $(make-target-directory) > + cp $< $@ > +$(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so: $(objpfx)markermod4-3.so > + $(make-target-directory) > + cp $< $@ > +$(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so: $(objpfx)markermod4-4.so > + $(make-target-directory) > + cp $< $@ > + > + > +endif # $(subdir) == elf > > ifeq ($(subdir),csu) > gen-as-const-headers += tlsdesc.sym rtld-offsets.sym > diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c > new file mode 100644 > index 0000000000..c4d8b3a02a > --- /dev/null > +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c > @@ -0,0 +1,66 @@ > +/* Architecture-specific glibc-hwcaps subdirectories. x86 version. > + Copyright (C) 2020 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library 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 > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + <https://www.gnu.org/licenses/>. */ > + > +#include <dl-hwcaps.h> > +#include <cpu-features.h> > Please use <sys/platform/x86.h>. > +const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2"; > +enum { subdirs_count = 3 }; > + > +uint32_t > +_dl_hwcaps_subdirs_active (void) > +{ > + int active = 0; > + > + /* Test in reverse preference order. */ > + > + /* x86-64-v2. */ > + if (!(CPU_FEATURE_USABLE (CMPXCHG16B) > + && CPU_FEATURE_USABLE (LAHF64_SAHF64) > + && CPU_FEATURE_USABLE (POPCNT) > + && CPU_FEATURE_USABLE (SSE3) > + && CPU_FEATURE_USABLE (SSE4_1) > + && CPU_FEATURE_USABLE (SSE4_2) > + && CPU_FEATURE_USABLE (SSSE3))) > + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); > + ++active; > + > + /* x86-64-v3. */ > + if (!(CPU_FEATURE_USABLE (AVX) > + && CPU_FEATURE_USABLE (AVX2) > + && CPU_FEATURE_USABLE (BMI1) > + && CPU_FEATURE_USABLE (BMI2) > + && CPU_FEATURE_USABLE (F16C) > + && CPU_FEATURE_USABLE (FMA) > + && CPU_FEATURE_USABLE (LZCNT) > + && CPU_FEATURE_USABLE (MOVBE) > + && CPU_FEATURE_USABLE (OSXSAVE))) > + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); > + ++active; > + > + /* x86-64-v4. */ > + if (!(CPU_FEATURE_USABLE (AVX512F) > + && CPU_FEATURE_USABLE (AVX512BW) > + && CPU_FEATURE_USABLE (AVX512CD) > + && CPU_FEATURE_USABLE (AVX512DQ) > + && CPU_FEATURE_USABLE (AVX512VL))) > + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); > + ++active; > + > + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); > +} > diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c > new file mode 100644 > index 0000000000..b46e7cb236 > --- /dev/null > +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c > @@ -0,0 +1,65 @@ > +/* glibc-hwcaps subdirectory test. x86_64 version. > + Copyright (C) 2020 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library 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 > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + <https://www.gnu.org/licenses/>. */ > + > +#include <stdio.h> > +#include <support/check.h> > +#include <sys/param.h> Please include <sys/platform/x86.h>. > +extern int marker2 (void); > +extern int marker3 (void); > +extern int marker4 (void); > + > +/* Return the x86-64-vN level, 1 for the baseline. */ > +static int > +compute_level (void) > +{ > + /* These checks are not entirely accurate because they are limited > + by GCC capabilities. But wrong results will only result from > + inconsistent CPU models involving virtualization. */ Please use const struct cpu_features *cpu_features = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX); if (CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B) && CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64) && CPU_FEATURE_USABLE_P (cpu_features, POPCNT) && CPU_FEATURE_USABLE_P (cpu_features, MMX) && CPU_FEATURE_USABLE_P (cpu_features, SSE) && CPU_FEATURE_USABLE_P (cpu_features, SSE2) && CPU_FEATURE_USABLE_P (cpu_features, SSE3) && CPU_FEATURE_USABLE_P (cpu_features, SSSE3) && CPU_FEATURE_USABLE_P (cpu_features, SSE4_1) && CPU_FEATURE_USABLE_P (cpu_features, SSE4_2)) ... > + if (!(__builtin_cpu_supports ("sse3") > + && __builtin_cpu_supports ("sse4.1") > + && __builtin_cpu_supports ("sse4.2") > + && __builtin_cpu_supports ("ssse3"))) > + return 1; > + if (!(__builtin_cpu_supports ("avx") > + && __builtin_cpu_supports ("avx2") > + && __builtin_cpu_supports ("bmi") > + && __builtin_cpu_supports ("bmi2") > + && __builtin_cpu_supports ("fma"))) > + return 2; > + if (!(__builtin_cpu_supports ("avx512f") > + && __builtin_cpu_supports ("avx512bw") > + && __builtin_cpu_supports ("avx512cd") > + && __builtin_cpu_supports ("avx512dq") > + && __builtin_cpu_supports ("avx512vl"))) > + return 3; > + return 4; > +} > + > +static int > +do_test (void) > +{ > + int level = compute_level (); > + printf ("info: detected x86-64 micro-architecture level: %d\n", level); > + TEST_COMPARE (marker2 (), MIN (level, 2)); > + TEST_COMPARE (marker3 (), MIN (level, 3)); > + TEST_COMPARE (marker4 (), MIN (level, 4)); > + return 0; > +} > + > +#include <support/test-driver.c> > -- > Red Hat GmbH, https://de.redhat.com/ , Registered seat: Grasbrunn, > Commercial register: Amtsgericht Muenchen, HRB 153243, > Managing Directors: Charles Cachera, Brian Klemm, Laurie Krebs, Michael O'Neill > >
* H. J. Lu via Libc-alpha: >> diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c >> new file mode 100644 >> index 0000000000..c4d8b3a02a >> --- /dev/null >> +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c >> +#include <dl-hwcaps.h> >> +#include <cpu-features.h> >> > > Please use <sys/platform/x86.h>. How does this work? There is no wrapper header for it, so its functionality is not really available within ld.so. >> diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c >> new file mode 100644 >> index 0000000000..b46e7cb236 >> --- /dev/null >> +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c >> +#include <stdio.h> >> +#include <support/check.h> >> +#include <sys/param.h> > > Please include <sys/platform/x86.h>. I don't want to test the implementation against itself. I'd rather use the GCC functionality and if necessary, add the additional feature checks by open-coding the CPU analysis. Thanks, Florian
On Tue, Oct 13, 2020 at 2:29 AM Florian Weimer <fweimer@redhat.com> wrote: > > * H. J. Lu via Libc-alpha: > > >> diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c > >> new file mode 100644 > >> index 0000000000..c4d8b3a02a > >> --- /dev/null > >> +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c > > >> +#include <dl-hwcaps.h> > >> +#include <cpu-features.h> > >> > > > > Please use <sys/platform/x86.h>. > > How does this work? There is no wrapper header for it, so its > functionality is not really available within ld.so. You are right. > >> diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c > >> new file mode 100644 > >> index 0000000000..b46e7cb236 > >> --- /dev/null > >> +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c > > >> +#include <stdio.h> > >> +#include <support/check.h> > >> +#include <sys/param.h> > > > > Please include <sys/platform/x86.h>. > > I don't want to test the implementation against itself. I'd rather use > the GCC functionality and if necessary, add the additional feature > checks by open-coding the CPU analysis. You need to check all ISAs included in each ISA level. There are testcases to check that <sys/platform/x86.h> is correct.
* H. J. Lu via Libc-alpha: > On Tue, Oct 13, 2020 at 2:29 AM Florian Weimer <fweimer@redhat.com> wrote: >> >> * H. J. Lu via Libc-alpha: >> >> >> diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c >> >> new file mode 100644 >> >> index 0000000000..c4d8b3a02a >> >> --- /dev/null >> >> +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c >> >> >> +#include <dl-hwcaps.h> >> >> +#include <cpu-features.h> >> >> >> > >> > Please use <sys/platform/x86.h>. >> >> How does this work? There is no wrapper header for it, so its >> functionality is not really available within ld.so. > > You are right. So this part is okay? >> >> diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c >> >> new file mode 100644 >> >> index 0000000000..b46e7cb236 >> >> --- /dev/null >> >> +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c >> >> >> +#include <stdio.h> >> >> +#include <support/check.h> >> >> +#include <sys/param.h> >> > >> > Please include <sys/platform/x86.h>. >> >> I don't want to test the implementation against itself. I'd rather use >> the GCC functionality and if necessary, add the additional feature >> checks by open-coding the CPU analysis. > > You need to check all ISAs included in each ISA level. > There are testcases to check that <sys/platform/x86.h> > is correct. Do you still want me to use <sys/platform/x86.h> then? Thanks, Florian
On Tue, Oct 13, 2020 at 4:25 AM Florian Weimer <fweimer@redhat.com> wrote: > > * H. J. Lu via Libc-alpha: > > > On Tue, Oct 13, 2020 at 2:29 AM Florian Weimer <fweimer@redhat.com> wrote: > >> > >> * H. J. Lu via Libc-alpha: > >> > >> >> diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c > >> >> new file mode 100644 > >> >> index 0000000000..c4d8b3a02a > >> >> --- /dev/null > >> >> +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c > >> > >> >> +#include <dl-hwcaps.h> > >> >> +#include <cpu-features.h> > >> >> > >> > > >> > Please use <sys/platform/x86.h>. > >> > >> How does this work? There is no wrapper header for it, so its > >> functionality is not really available within ld.so. > > > > You are right. > > So this part is okay? Yes. > >> >> diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c > >> >> new file mode 100644 > >> >> index 0000000000..b46e7cb236 > >> >> --- /dev/null > >> >> +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c > >> > >> >> +#include <stdio.h> > >> >> +#include <support/check.h> > >> >> +#include <sys/param.h> > >> > > >> > Please include <sys/platform/x86.h>. > >> > >> I don't want to test the implementation against itself. I'd rather use > >> the GCC functionality and if necessary, add the additional feature > >> checks by open-coding the CPU analysis. > > > > You need to check all ISAs included in each ISA level. > > There are testcases to check that <sys/platform/x86.h> > > is correct. > > Do you still want me to use <sys/platform/x86.h> then? > Yes.
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile index 42b97c5cc7..16030715e7 100644 --- a/sysdeps/x86_64/Makefile +++ b/sysdeps/x86_64/Makefile @@ -144,7 +144,41 @@ CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS) CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS) CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS) endif -endif + +$(objpfx)tst-glibc-hwcaps: \ + $(objpfx)markermod2-1.so $(objpfx)markermod3-1.so $(objpfx)markermod4-1.so +$(objpfx)tst-glibc-hwcaps.out: \ + $(objpfx)markermod2.so \ + $(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so \ + $(objpfx)markermod3.so \ + $(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so \ + $(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so \ + $(objpfx)markermod4.so \ + $(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so \ + $(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so \ + $(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so \ + +$(objpfx)glibc-hwcaps/x86-64-v2/markermod2.so: $(objpfx)markermod2-2.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v2/markermod3.so: $(objpfx)markermod3-2.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v3/markermod3.so: $(objpfx)markermod3-3.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v2/markermod4.so: $(objpfx)markermod4-2.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v3/markermod4.so: $(objpfx)markermod4-3.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v4/markermod4.so: $(objpfx)markermod4-4.so + $(make-target-directory) + cp $< $@ + + +endif # $(subdir) == elf ifeq ($(subdir),csu) gen-as-const-headers += tlsdesc.sym rtld-offsets.sym diff --git a/sysdeps/x86_64/dl-hwcaps-subdirs.c b/sysdeps/x86_64/dl-hwcaps-subdirs.c new file mode 100644 index 0000000000..c4d8b3a02a --- /dev/null +++ b/sysdeps/x86_64/dl-hwcaps-subdirs.c @@ -0,0 +1,66 @@ +/* Architecture-specific glibc-hwcaps subdirectories. x86 version. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <dl-hwcaps.h> +#include <cpu-features.h> + +const char _dl_hwcaps_subdirs[] = "x86-64-v4:x86-64-v3:x86-64-v2"; +enum { subdirs_count = 3 }; + +uint32_t +_dl_hwcaps_subdirs_active (void) +{ + int active = 0; + + /* Test in reverse preference order. */ + + /* x86-64-v2. */ + if (!(CPU_FEATURE_USABLE (CMPXCHG16B) + && CPU_FEATURE_USABLE (LAHF64_SAHF64) + && CPU_FEATURE_USABLE (POPCNT) + && CPU_FEATURE_USABLE (SSE3) + && CPU_FEATURE_USABLE (SSE4_1) + && CPU_FEATURE_USABLE (SSE4_2) + && CPU_FEATURE_USABLE (SSSE3))) + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); + ++active; + + /* x86-64-v3. */ + if (!(CPU_FEATURE_USABLE (AVX) + && CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI1) + && CPU_FEATURE_USABLE (BMI2) + && CPU_FEATURE_USABLE (F16C) + && CPU_FEATURE_USABLE (FMA) + && CPU_FEATURE_USABLE (LZCNT) + && CPU_FEATURE_USABLE (MOVBE) + && CPU_FEATURE_USABLE (OSXSAVE))) + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); + ++active; + + /* x86-64-v4. */ + if (!(CPU_FEATURE_USABLE (AVX512F) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (AVX512CD) + && CPU_FEATURE_USABLE (AVX512DQ) + && CPU_FEATURE_USABLE (AVX512VL))) + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); + ++active; + + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); +} diff --git a/sysdeps/x86_64/tst-glibc-hwcaps.c b/sysdeps/x86_64/tst-glibc-hwcaps.c new file mode 100644 index 0000000000..b46e7cb236 --- /dev/null +++ b/sysdeps/x86_64/tst-glibc-hwcaps.c @@ -0,0 +1,65 @@ +/* glibc-hwcaps subdirectory test. x86_64 version. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <support/check.h> +#include <sys/param.h> + +extern int marker2 (void); +extern int marker3 (void); +extern int marker4 (void); + +/* Return the x86-64-vN level, 1 for the baseline. */ +static int +compute_level (void) +{ + /* These checks are not entirely accurate because they are limited + by GCC capabilities. But wrong results will only result from + inconsistent CPU models involving virtualization. */ + if (!(__builtin_cpu_supports ("sse3") + && __builtin_cpu_supports ("sse4.1") + && __builtin_cpu_supports ("sse4.2") + && __builtin_cpu_supports ("ssse3"))) + return 1; + if (!(__builtin_cpu_supports ("avx") + && __builtin_cpu_supports ("avx2") + && __builtin_cpu_supports ("bmi") + && __builtin_cpu_supports ("bmi2") + && __builtin_cpu_supports ("fma"))) + return 2; + if (!(__builtin_cpu_supports ("avx512f") + && __builtin_cpu_supports ("avx512bw") + && __builtin_cpu_supports ("avx512cd") + && __builtin_cpu_supports ("avx512dq") + && __builtin_cpu_supports ("avx512vl"))) + return 3; + return 4; +} + +static int +do_test (void) +{ + int level = compute_level (); + printf ("info: detected x86-64 micro-architecture level: %d\n", level); + TEST_COMPARE (marker2 (), MIN (level, 2)); + TEST_COMPARE (marker3 (), MIN (level, 3)); + TEST_COMPARE (marker4 (), MIN (level, 4)); + return 0; +} + +#include <support/test-driver.c>