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Improves memory access, reformat evaluation scheme to pack coefficients.
5% improvement in throughput microbenchmark on Neoverse V1.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Also use this macro in one of the examples.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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A corresponding macro has been added to Linux UAPI headers in 6.15.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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This is required after commit 03da41d47dc73674307e6ffc5b75e9043febc698
("Turn on -Wmissing-parameter-name by default if available").
Reviewed-by: Sam James <sam@gentoo.org>
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This is required after commit 4f4c4fcde76aedc1f5362a51d98ebb57a28fbce9
("Turn on -Wfree-labels by default if available").
Reviewed-by: Sam James <sam@gentoo.org>
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Update the list of RISC-V relocations from the ELF psABI as of June 2024.
It removes binutils-internal only relocations that were never part of
actual object files. The GNU_VTINHERIT and GNU_VTENTRY relocations were
never used because the corresponding GCC option -fvtable-gc was never
supported on RISC-V.
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This works around incompatibility of GMP 6.3.0 with GCC 15 (defaulting
to C23) following an approach suggested by Florian.
Tested with build-many-glibcs.py (host-libraries build only).
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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__ptmalloc_init was called too early in __libc_early_init: it uses
__libc_initial which is not set yet. Fix this by moving initialization
to the end of __libc_early_init.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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This avoids warnings about these options during the C++ header
inclusion tests.
Reviewed-by: Sam James <sam@gentoo.org>
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Reviewed-by: Sam James <sam@gentoo.org>
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This flags another hazard for backporting changes to earlier branches.
Reviewed-by: Sam James <sam@gentoo.org>
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Signed-off-by: Tomas Volf <~@wolfsden.cz>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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This flags a hazard for backporting changes to earlier branches.
Reviewed-by: Sam James <sam@gentoo.org>
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Due to raising the minimum binutils version to version >=2.28,
the used cfi_escape for cfi_val_offset can now be ommitted.
The commit 0fc76d876261ee8253fef198ffec48c832edd4ff
has already adjusted it for the 64bit part of mcount.
This patch also adjusts it for the 31bit part of mcount.
Checked with "objdump -WF" / "objdump -Wf" that the previous
cfi_escape and the new cfi_val_offset are equal.
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Add initial inputs for asinpi(f), acospi(f), atanpi(f) and atan2pi(f) based
on existing asin/acos/atan inputs.
Benchtests now works on the new libmvec function.
Reviewed-by: Yury Khrustalev <yury.khrustalev@arm.com>
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This fixes make dist on systems with the latest texinfo installed.
GNU texinfo 7.2 changes @xrefs in proper plain text sentences instead
of pseudo info references.
Tested-By: Collin Funk <collin.funk1@gmail.com>
Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
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And simplify the interface of support_capture_subprogram_self_sgid.
Use the existing framework for temporary directories (now with
mode 0700) and directory/file deletion. Handle all execution
errors within support_capture_subprogram_self_sgid. In particular,
this includes test failures because the invoked program did not
exit with exit status zero. Existing tests that expect exit
status 42 are adjusted to use zero instead.
In addition, fix callers not to call exit (0) with test failures
pending (which may mask them, especially when running with --direct).
Fixes commit 35fc356fa3b4f485bd3ba3114c9f774e5df7d3c2
("elf: Fix subprocess status handling for tst-dlopen-sgid (bug 32987)").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Use more inclusive language in makefile source.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Use more inclusive language in generated sources.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Use more inclusive language in code comments.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Use more inclusive language in code.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Remove Changelog entries that use 'blacklist' or 'master' in the
test data. The test data still contains enough accented characters
to serve the purposes of the posix/tst-regex.c test.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Remove the obsolete ignore=CVS since we use git now.
We make the code more inclusive by removing obsolete comments.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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When running as root, it is likely that we can run under any group.
Pick a harmless group from /etc/group in this case.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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This should really move into support_capture_subprogram_self_sgid.
Reviewed-by: Sam James <sam@gentoo.org>
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Fix wcsncpy and wcpncpy typo in ifunc-impl-list.c.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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Check that LD_LIBRARY_PATH is ignored for AT_SECURE statically
linked binaries, using support_capture_subprogram_self_sgid.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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The function does not modify the passed-in string, so make this clear
via the prototype.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Fix typo atanpi2->atan2pi in math-vector.h.
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The -fno-builtin options need to disable the long double builtins.
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Now we finally support modern GCC and binutils, it's time for a cleanup.
Remove HAVE_AARCH64_SVE_ASM define and conditional compilation. Remove SVE
configure checks for SVE, ACLE and variant-PCS support.
Reviewed-by: Yury Khrustalev <yury.khrustalev@arm.com>
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Now we finally support modern GCC and binutils, it's time for a cleanup.
Use PAC and BTI instructions unconditionally and use proper assembler syntax.
Remove the PR target/94791 strip_pac workarounds for buggy GCCs. Remove the
PAC/BTI configure checks - always emit GNU property notes on assembly files.
Change cfi_window_save to the correct cfi_negate_ra_state unwind directive.
Reviewed-by: Matthieu Longo <matthieu.longo@arm.com>
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Implement double and single precision variants of the C23 routine atan2pi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Implement double and single precision variants of the C23 routine atanpi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Implement double and single precision variants of the C23 routine asinpi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Implement double and single precision variants of the C23 routine acospi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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Improve performance of Inverse trig functions by altering how coefficients are
loaded.
Performance improvement on Neoverse V1:
SVE acos 14%
AdvSIMD acos 6%
AdvSIMD asin 6%
SVE asin 5%
AdvSIMD asinf 2%
AdvSIMD atanf 22%
SVE atanf 20%
SVE atan 11%
AdvSIMD atan 5%
SVE atan2 7%
SVE atan2f 4%
AdvSIMD atan2f 3%
AdvSIMD atan2 2%
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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This commit adds advisory data for the above CVE(s).
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This ensures that the ctype data pointers in TLS are valid
in secondary namespaces even without initialization via
__ctype_init.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
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The existing initializers already contain explicit casts. Keep them
due to int/uint32_t mismatch.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
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These variables are not exported, and libc.so TLS is initial-exec
anyway. Declare these variables as hidden and use the initial-exec
TLS model.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
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Use __thread variables directly instead. The macros do not save any
typing. It seems unlikely that a future port will lack __thread
variable support.
Some of the __libc_tsd_* variables are referenced from assembler
files, so keep their names. Previously, <libc-tls.h> included
<tls.h>, which in turn included <errno.h>, so a few direct includes
of <errno.h> are now required.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
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Reviewed-by: Collin Funk <collin.funk1@gmail.com>
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Support for seeking is limited. Using the d_off and d_reclen members
of struct dirent is discouraged, especially with readdir. Concurrent
modification of directories during iteration may result in duplicate
or missing etnries.
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