[Sema] Return RecoveryExpr for ARC atomic ownership error (#224849)
`BuiltinAtomicOverloaded` returned a bare `ExprError()` on the ARC
ownership check and made CodeGen hit `llvm_unreachable`.
so return a `RecoveryExpr` instead so bad data can't reach codegen.
Fixes #222528.
[libc++] Run Linux benchmarks on the premerge k8s runner set (#227547)
The Linux benchmarking machine was still using the
llvm-premerge-libcxx-runners runner set, which doesn't exist anymore.
Moving to K8s also requires specifying the Docker image to use in
machines.json.
As a drive-by, drop the manual Python installation since a suitable
version of Python should already exist in the image.
[RISCV] Model Zvzip VPAIR shuffle costs (#227177)
Model pair-even and pair-odd shuffle costs using vpaire.vv and
vpairo.vv when the Zvzip extension is available.
Add a new file `RISCVVectorUtils.h` to share shuffle-mask
helpers between ISel lowering and TTI. Also move `isPairEven`
and `isPairOdd` into the new file and reuse them in TTI.
This is the second PR split out from #224991.
Assisted-by: TRAE CLI (GPT-5)
[Offload] Fix dangling memory references / leaks (#227411)
Summary:
Two small tweaks. First, the allocator creates memory for the type via
placement new, but does not deallocate it with the destructor. This is
UB and is fixed by explicitly callling the type's destructor. Second,
the plugins were only 'released', which was likely just being confused
with `reset`. Release returns the pointer, essentially giving up
ownership, but we never take the pointer so it just dangles. The correct
spelling is 'reset'.
PR kern/68010 - sys/conf/osrelease.sh - add comments
Add some comments to osrelease.sh to explain its purpose,
keep away gawkers, etc...
While here, fix a couple of sh quoting botches.
NFCI.
No pullups.
[Plugins] Load pass plugins after parsing the command line (#226773)
opt and llc load -load-pass-plugin plugins from a cl::opt callback while
parsing argv, so that the options a plugin registers are recognized
later on the command line. cl::callback is to be removed to enable
migration to a TableGen-based option representation
(https://discourse.llvm.org/t/rfc-declare-library-command-line-options-in-tablegen-one-struct-per-library/91877/5).
Load plugins after cl::ParseCommandLineOptions. A loaded plugin's
options are no longer accepted as ordinary options; pass them with
-plugin-arg=<plugin>,<arg> instead. Prefix each Polly option in Polly
tests with -plugin-arg=Polly, and each IRTransforms example option with
-plugin-arg=SimplifyCFG,.
LLM-aided
[RISCV] Model interleave2 and deinterleave2 costs with Zvzip (#225752)
This PR extends the RISC-V TTI cost model to recognize
`llvm.vector.interleave2` and `llvm.vector.deinterleave2` when the Zvzip
extension is available.
The cost is computed based on the operand that holds the interleaved
data: the destination operand of `vzip.vv`, and the source operand of
`unzipe.v` or `unzipo.v`.
This is the first PR split out from #224991.
Assisted-By: Trae CLI (GPT-5)
sysutils/pflogsumm: update to v1.2.0
After a long hiatus, pflogsumm is now getting more active development.
While here, improve Makefile handling of, for example, interpreter
substitution, etc. Note the new location for upstream.
ChangeLog for pflogsumm [since v1.1.5]
rel-1.2.0 20260422
This release promotes 1.1.15 from Beta to Production status; no code
changes have been made since that version.
The changes since 1.1.6, the last Production release, are substantive,
including:
- Config-file support
- Enhanced TLS reporting
- Improved parsing accuracy
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Merge tag 'rtc-7.3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC fixes from Alexandre Belloni:
"Mostly small issues found using AI. The efi change is to avoid a
regression on some platforms
Subsystem:
- fix a possible information leak
Drivers:
- efi: restore alarm support with runtime capability probe"
* tag 'rtc-7.3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: spear: initialize IRQ state before requesting alarm IRQ
rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()
rtc: ac100: Fix clock provider use-after-free on probe failure
rtc: ac100: Assign .num before accessing .hws
rtc: efi: restore alarm support with runtime capability probe
rtc: dev: zero-initialize struct rtc_wkalrm to prevent information leak
[InstCombine] Fold `-X / -Y` to `X / Y` when it cannot overflow (#224025)
Fold:
```
(-X) / (-Y) -> X / Y
```
Do not combine when X may be INT_MIN and Y may be -1, as the result
could introduce signed division overflow.
For AMDGPU example:
https://godbolt.org/z/6jj6E8T5T
[lld][AArch64] Support R_AARCH64_TLSLE_ADD_TPREL_LO12 (#227173)
AArch64 local-exec TLS code sequences compiled with -mtls-size=12 use
the non-NC R_AARCH64_TLSLE_ADD_TPREL_LO12 relocation (emitted for 'add
xN, xN, :tprel_lo12:sym'), but lld only handles the _NC variant, so
linking such objects fails with 'unknown relocation'.
Add the relocation to the TLS LE group in scanSectionImpl (R_TPREL, same
group as the other TLSLE relocations, so it is also rejected for
-shared) and resolve it like the _NC variant, but with an unsigned
12-bit range check as the non-NC form requires the full offset to fit
into the imm12 field.
[Clang][HLSL] Reject matrix layout modifiers on array typedefs (#227364)
Fixes #226251
Require row_major and column_major modifiers to apply directly to a
matrix type rather than accepting an array typedef whose element type is
a matrix.
This preserves valid declarations of arrays of annotated matrix elements
while rejecting attempts to apply a layout modifier to the array type
itself.
vm_swapout: Restore handling of RLIMIT_RSS
In commit 13a1129d700c, I removed the mechanism by which the pagedaemon
signals the swapout thread when page reclamation is unable to keep up
with demand. This is because the swapout thread's main action in this
case is to swap out sleeping processes, but we removed this support.
However, it had the secondary effect of causing the swapout thread to
enforce RLIMIT_RSS when racct is not enabled. Without it, if
racct_enabled is false, nothing ever kicks the swapout thread.
Restore the old behaviour of trying to enforce RLIMIT_RSS when the page
daemon is unable to keep up with demand. I'm not at all convinced this
is a good way to implement the limit, but the change wasn't intentional,
so let's restore it for now.
Fixes: 13a1129d700c ("vm: Remove kernel stack swapping support, part 1")
Reviewed by: olce, kib
MFC after: 2 weeks
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