[AArch64] Lower cttz(bitcast <Nxi1> to iN) with shrn-based compressed movemask (#199081)
The existing lowering in vectorToScalarBitmask() creates a 1 bit per
lane movemask using a powers of 2 reduction (and+addv with a constant
pool entry).
This patch adds a DAG combine on ISD::CTTZ that recognizes cttz(bitcast
<N x i1> to iN) and produces a compressed movemask with shrn (for i8
lanes) or xtn (for wider lanes) then runs scalar cttz on a 64- or
128-bit value. Dividing by bits per lane gives the lane index.
Supports lane counts {2, 4, 8, 16, 32} (one or two NEON registers)
For the example in the issue (`<16 x i8> -> i16`):
Before:
```asm
adrp x8, .LCPI0_0
cmlt v0.16b, v0.16b, #0
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[PGO][HIP][NFC] Fix hipModuleGetGlobal -Wunused-function warning (#207293)
The functions trigger the warning on Windows (without elf.h) and is
fatal under -Werror.
Fix by adding [[maybe_unused]]. Alternatively it could be moved inside
the existing __has_include(<elf.h>) block,; however that would trigger
-Wunused-but-set-global on pHipModuleGetGlobal.
Current fix is minimal and can be removed once hipModuleGetGlobal is
supported without elf.h.
[clang] fix redeclarations of the injected class name
The declaration used to represent an injected class name should never
be part of any redeclaration chain.
This is a regression since Clang 22, and this will be backported, so no release notes.
Fixes #202320
[clangd] Invalidate preamble when new module imports are added (#199460)
When using `SkipPreambleBuild`, adding a new `import` statement to a
file did
not invalidate the existing preamble because `isPreambleCompatible` only
checked whether existing prerequisite modules were up-to-date, not
whether
the set of required modules itself had changed.
Fixes: #199389
Partially addresses: #126350
Do not panic when frame_length > ETHER_MAX_LEN, reset the chip instead
There is no need to panic when RX FIFO desync occurred or garbage frame
arrived. We can recover by resetting the chip, so do that. It's the
same recovery path the driver already used for a bad avail marker.
Do not unload bounce buffer dmamap on error during DMA read/write
Discovered when hacking on jzmmc.
The two functions: sdmmc_mem_single_segment_dma_write_block and
sdmmc_mem_single_segment_dma_read_block are not the owners of bounce
buffer dmamap and have no business in unloading it.
This caused bus_dmamap_sync: bad offset panic during DMA on non-coherent
CPU cores.
Note that this particular code path (bounce buffers) is generally not
well exercised on mainstream platforms, which caused the bug to get
unnoticed.
ffs: do not return ESTALE on attempt to ffs_unotovp() on unlinked inode
The consequences are:
- for nfs exports and fhopen(2), unlinked but still referenced inodes
are accessible
- for ffs_vput_pair() with unlock_vp = false, spurious ESTALE is not
returned when the inode is still alive but unlinked
Note that tmpfs does not return ESTALE for the unlinked nodes.
The same behavior is claimed for Linux in
https://github.com/openzfs/zfs/issues/18699
Reviewed by: rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D57982
[flang-rt] Use posix_memalign instead of std::aligned_alloc (#207248)
MallocWrapper called std::aligned_alloc for over-aligned requests, but
that C11 function is only available on macOS 10.15 and newer. flang-rt
builds with a Darwin deployment target of 10.7 (set in
AddFlangRT.cmake), so the build failed under
-Werror=unguarded-availability-new.
Use posix_memalign instead, as it is available on all supported POSIX
targets.
acpi: ignore wake button press replayed by firmware on resume
Some firmware delivers the power or sleep button press that woke the
system as an ordinary button press (Notify 0x80) shortly after resume,
rather than as the wakeup notification (Notify 0x02) the ACPI
specification requires for a button that is also a wake source.
On affected machines (e.g. the Framework Laptop 12, Intel Raptor Lake-P)
the power button is a control-method device behind the embedded
controller. The EC latches the key press that woke the system across the
sleep transition and flushes it through its normal _Qxx query path as
soon as it is reinitialized on resume. The replayed press is
indistinguishable from a genuine one, so the kernel honors it as a fresh
suspend request and the machine suspends again immediately after waking;
it cannot be kept awake with the button.
The event cannot be filtered at its source: it arrives over the same EC
query path that also carries legitimate events (lid, AC, thermal,
battery), so suppressing the drain would lose real notifications.
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Initial import of math/cvc5 version 1.3.4.
An efficient open-source automatic theorem prover for Satisfiability
Modulo Theories (SMT) problems. It can be used to prove the
satisfiability (or, dually, the validity) of first-order formulas
with respect to (combinations of) a variety of useful background
theories.
Fix CODEOWNERS error, remove Lanza from ClangIR owners
The github project reports:
Unknown owner on line 39: make sure <name> exists and has write access to the repository
I assume Nathan's commit access lapsed and he has the `triage` role now.
I added a comment saying he is an emeritus owner. This is reversible,
and I assume if he needs or wants write access, we can revisit this in
the future.
[docs] Rename LangRef.{rst|md}
Tracking issue: #201242
This commit does not use valid markdown, so the docs will not build, but they will be fixed in an immediate follow-up commit that does the migration.
