ValueTracking: Generalize known frexp exponent range to any constant
Extend computeKnownExponentRangeFromContext beyond the special case of a
dominating fabs(V) compare against exactly 1.0 to any finite limit.
Generalizing below 1.0 exposes a soundness issue: frexp(0) has exponent
0, so a bound derived assuming a nonzero value could wrongly exclude it
when the limit implies a negative maximum exponent. Query fcZero and clamp
the maximum exponent to at least 0 when the source may be zero.
Co-authored-by: Claude (Opus 4.8) <noreply at anthropic.com>
Tolerate transient NTB blips before calling dlm.reset_active
remote_down now polls the DLM port for up to 60 seconds before ejecting
the peer, so short NTB packet loss events don't trigger a spurious
reset_active
Also raise scan_secs from the default 5 to 30 so the kernel DLM itself
doesn't start FORCEUNLOCK recovery during ~20s NTB blips.
[arm64e] Add a builtin + intrinsic for arm64e PAuth_LR: __builtin_ptr_auth_auth_with_pc_and_resign (#202742)
The new builtin behaves like __builtin_ptrauth_auth_and_resign, but
incorporates the address of the signing instruction (i.e. the
`pacibsppc`/`paciasppc`) when performing the auth side, and subsequently
re-signs using a different scheme. Authenticating the re-signed value
will fail if and only if authenticating the original value with the
incorporated pc would have failed.
games/openbve: the port had been updated to version 1.13.0.7
The next releases (v1.14+) will deprecate the legacy OpenGL 1.2
renderer, and OpenGL 4.1 will be required. The new renderer is
considerably faster in all cases, and allows for various things
(particles, shadows, complex keyframe animations) not supported
by the legacy renderer.
OpenGL 4.1 is supported by all discrete graphics cards and most
integrated graphics solutions from ~2012 onwards.
Reported by: portscout
[clang] implement CWG2064: ignore value dependence for decltype
The 'decltype' for a value-dependent (but non-type-dependent) should be known,
so this patch makes them non-opaque instead.
This patch also implements what's neceessary to allow overloading
on pure differences in instantiation dependence, making `std::void_t`
usable for SFINAE purposes.
This also readds a few test cases from da98651, which was a previous attempt
at resolving CWG2064.
Fixes #8740
Fixes #61818
Fixes #190388
Ensure truenas_zfstierd state on failover
Regenerate the truenas_zfstierd config on the promoted node: the
service now owns its etc group and vrrp_master restarts it, so an
enabled database no longer surfaces a spurious tiering-disabled
error to clients.
Materialize enum_jobs() in the tier alert source so per-job
get_info() no longer opens a second read transaction inside the
live iterator (MDB_BAD_RSLOT; LMDB allows one read txn per thread).
[docs] Rewrite LangRef.md as Markdown (#201975)
Tracking issue: #201242
Migration guide docs:
https://llvm.org/docs/SphinxQuickstartTemplate.html#markdown-migration-guidelines
RFC:
https://discourse.llvm.org/t/rfc-make-myst-markdown-the-llvm-docs-format-rip-rest/90840
This change migrates LangRef by itself, since it is quite a large
document with many idiosyncracies.
LangRef makes extensive use of definition lists, which apparently
require enabling the deflist MyST extension in Sphinx conf.py. In part
because definition list boundaries are controlled by indentation,
several of them required manual fixups to get the nesting right. Some of
the issues were pre-existing broken indentation, but this should now be
much better.
I have a verification script that tracks all anchors and ensures that
all previous anchors are carried over to the new document, so no
mid-document links are broken.
[clang] Reland: fix getTemplateInstantiationArgs (#208285)
Relands https://github.com/llvm/llvm-project/pull/199528
Previous: https://github.com/llvm/llvm-project/pull/207825
This implements a new strategy for collecting the template arguments, by
relying on the qualifiers and template parameter lists to navigate the
template
context of out-of-line definitions.
This greatly simplifies the signature of that function, by removing a
bunch
of workarounds, and simpliffying a couple that weren't removed yet.
Since this now relies on qualifiers and template parameter lists,
this patch expends most of its effort making sure these are placed,
transformed and propagated to template instantiations.
Also makes the explicit specialization AST nodes stop abusing the
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[ADT][NFC] UniqueFunction MSVC fix (#208293)
Fixup of #208251 for MSVC, which erroneously treats uses of non-static
constexpr variables as odr-use and requires them to be captured.
Make concurrent sys_msgrcv() wait until we finish message delivery. We
left acquired message in the queue while we are sleeping in msg_copyout().
Concurrent sys_msgrcv() could acquire and delete this message.
Reported-by: syzbot+c80235d951da9769a00f at syzkaller.appspotmail.com
graphics/vulkan-headers: fix plist (+)
Vulkan-Headers 1.4.356 have added new C header, vulkan_ubm.h
Track it in plist
Reported by: bulk -t
Approved by: portmger blanket
www/freenginx-devel: update from 1.31.2 to 1.31.3
Sponsored by: tipi.work
<ChangeLog>
*) Feature: additional checks are now used during variable substitution,
including during execution of the ngx_http_rewrite_module directives,
to prevent buffer overruns in case of errors in the code.
*) Bugfix: if the "auth_request_set" directive or regular expression
named captures were used to change prefix variables, such as
"$http_...", corresponding variables became empty in other parts of
the configuration.
*) Bugfix: changing the $limit_rate and $args variables with the
"auth_request_set" directive or regular expression named captures
worked incorrectly.
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[SimplifyCFG] Improve reduceSwitchRange to avoid unnecessary subtractions (#198374)
Dense switch cases can sometimes be achieved with only a shift, avoiding
a subtract. Change reduceSwitchRange to check for such cases before
falling back to using a subtract.
The changes to test9 demonstrates that for the purpose of lookup-table
lowering (triggered by the switch-to-lookup flag), the switch range
still ends up normalized to start at 0, the subtraction just happens
after the fshl.
test10 demonstrates where this change is useful, resulting in a dense
switch case with one less subtract.
test11 demonstrates cases where the subtract is still needed in order to
form a dense switch case.
[BOLT] Fix DW_FORM_implicit_const values lost during DWARF5 rewriting (#192166)
Summary:
Fix two bugs in DIEBuilder that caused DW_FORM_implicit_const values to
be zeroed out when rewriting DWARF5 debug sections
(--update-debug-sections).
1. In constructDIEFast(), DWARFFormValue was constructed with just the
form code, leaving the value at 0. For DW_FORM_implicit_const,
extractValue() is a no-op since the value is expected to be pre-set.
Fix: use AttrSpec.getFormValue() which initializes the value from the
abbreviation table.
2. In assignAbbrev(), AddAttribute(Attr.getAttribute(), Attr.getForm())
used the two-argument overload which discards the implicit_const value.
Fix: use AddAttribute(Attr) to copy the full DIEAbbrevData.
Fixes https://github.com/llvm/llvm-project/issues/192084
misc/cstream: Update to 4.0.0
Also take maintainership (with permission from previous maintainer).
Approved by: jbo (mentor)
Differential Revision: https://reviews.freebsd.org/D58097
[AArch64][PAC] Reset `killed` operand flag in custom inserter of PAC pseudo (#158699)
If custom inserter changes the `AddrDisc` operand of `AArch64::PAC`
pseudo instruction, conservatively reset its `killed` flag. Keeping this
flag without checking if it is still legal may result in code of the
form
%disc = MOVKXi %addr(tied-def 0), 1234, 48
%signed = PAC %ptr(tied-def 0), 2, 0, killed %disc
# %addr is used past this point and %disc is not
being turned into
%signed = PAC %ptr(tied-def 0), 2, 1234, killed %addr
# %addr is used past this point, but the operand of
# the above instruction has killed flag
[MachineCopyPropagation] Fix debug info referring to subregisters. (#207861)
When copy propagation removes a copy, it fixes debug info that refers to
the old register to instead refer to the new register. This logic didn't
really deal with subregisters; it took any DBG_VALUE that pointed to a
subregister of the old register, and replaced it with the full new
register.
This patch adds logic for subregisters: if a DBG_VALUE refers to a
subregister of the source register, find the corresponding subregister
of the destination register.
Fixes #207682
