Merge tag 'kcsan-20260612-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/melver/linux
Pull KCSAN update from Marco Elver:
- Silence -Wmaybe-uninitialized when calling __kcsan_check_access()
* tag 'kcsan-20260612-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/melver/linux:
kcsan: Silence -Wmaybe-uninitialized when calling __kcsan_check_access()
[Flang] Store only options in FLANG_COMPILER_OPTIONS_STRING (#201278)
Previously, FLANG_COMPILER_OPTIONS_STRING stored every argument passed
to the flang driver, including input file names. The GNU extension
compiler_options() is documented to return only the options, not the
input files. Including the input files also caused the string to exceed
ARG_MAX on large builds, producing:
posix_spawn failed: Argument list too long
Use the driver's parsed InputArgList to filter out OPT_INPUT arguments,
preserving all options and their values (e.g. `-I /path`, `-o file`).
Fixes: https://github.com/llvm/llvm-project/issues/170651
[mlir][SPIR-V] Enforce physical storage buffer pointer decorations on GlobalVariable (#203600)
Enable the rule that was already enforced by spirv.Variable (in case of
SPV_KHR_physical_storage_buffer ext) requiring exactly one of
AliasedPointer/RestrictPointer
[LoongArch] Propagate demanded bits for CRC[C].W.{B,H}.W (#203201)
CRC byte and halfword instructions only use the low 8 or 16 bits of
their data operand. Propagate these demanded-bit requirements through
SimplifyDemandedBitsForTargetNode() so redundant masking operations can
be removed during DAG combining.
[VPlan] Move tail folding logic out of addMiddleCheck. NFC (#203475)
We simplify the TripCount == VectorTrip count condition with tail
folding, but we can just do that in foldTailByMasking and keep the
logic in one place instead.
fix multiple problems with testing hostkey types that are
not enabled by default.
1) Add all hostkey types in the "multiple hostkeys" subtest.
Previously known_hosts was accidentally clobbered, causing
only the last added hostkey type to be used.
2) Explicitly enable the hostkey types under test via
HostKeyAlgorithms
[LoongArch] Propagate demanded bits for CRC[C].W.{B,H}.W
CRC byte and halfword instructions only use the low 8 or 16 bits of
their data operand. Propagate these demanded-bit requirements through
SimplifyDemandedBitsForTargetNode() so redundant masking operations can
be removed during DAG combining.
mwl: return ENOMEM when rx buffer allocation fails
The malloc() failure path returned error, which is 0 at this point,
so callers would treat the allocation failure as success.
Return ENOMEM instead to correctly propagate the out-of-memory condition.
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D42282
[mlir][CSE] Remove the opsToErase container and immediately delete dead ops. (#203702)
This PR removes the `opsToErase` container and immediately erases dead
operations. Since dead ops are deleted on the fly, the value in the
`MemEffectsCache` map now correctly tracks the previous operation of
`toOp`. This change improves the storage efficiency of CSE. Furthermore,
it is part of https://github.com/llvm/llvm-project/pull/180556 and
substantially simplifies the implementation.
[libclc] Use __CLC_SCALAR instead of nonexistant __CLC_SCALAR1 for sin (#203807)
Summary:
This seems to be a typo? Every other case is guarded by `__CLC_SCALAR`
but this case had a `1` after it. Removing this improved performance on
sin/cos/tan to match the ROCm version.
[libclc] Use FMA for the pi reconstruction in acos / atan (#203804)
Summary:
This should recombine the split constant for this case. The performance
should be negligible for such large math functions, we get an extra add,
but in exchange the results should improve 1 ULP.
This was primarily done to match what AMD's math libraries do, with this
change we are byte-for-byte identical in output.
[Passes] Invoke CGSCCOptimizerLateEP callbacks in LTO pipeline (#203262)
The CGSCCOptimizerLateEP extension point was not being invoked in the
LTO pipeline. Right now only AMDGPU registers any passes during this
callback, but it was a real source of delta between the LTO and default
pipelines when targeting AMDGPU. This doesn't seem to be an intentional
omission given that it is instantiated in thinLTO as well. Just add it.
[libclc] Improve performance and precision of reciprocal functions (#203805)
Summary:
Small change to improve the performance and output of functions using
the reciprocol. This makes these functions *byte-for-byte* identical
with their OCML counterparts in ROCm.
Additionally ensure tanpi is correctly rounded to match ROCm.
lighttpd: update to 1.4.83. Changes:
Highlights
- add PQC hybrid KEM X25519MLKEM768 to default TLS groups
- mod_sockproxy can now route connections based on TLS SNI
- mod_proxy proxy.header enhanced config for url-path mapping of response headers
- HTTP Incremental header support
- portability/compatibility with library updates (lighttpd dependencies)
BEHAVIOR CHANGES
- add PQC hybrid KEM X25519MLKEM768 to default TLS groups
- HTTP/1.1 Upgrade: h2c has been deprecated; set default to disabled
in lighttpd, but can still be enabled in config, and http2 prior
knowledge is still enabled
* [systemd] add RestrictAddressFamilies AF_NETLINK
* [TLS] skip cert_is_active warnings for unset clock
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[X86][APX] Remove prefer-ndd-imm tuning (#203758)
It turns out NDD's immediate variants perform as good as non-NDD's on
real hardware. Verified both on CPU2017 and CPU2026, the geomean is
around 0 w/ and w/o this change. A few items get up and down due to the
side effect of register live range change caused by the NDD form. No
evidence shows this tuning has improvements or degradations even on
single items.
Assisted-by: Claude Sonnet 4.6
[mlir] mlir-opt-repl: add mcp-config command, fix readline on Windows
- 'mlir-opt-repl mcp-config' prints ready-to-paste Claude Code JSON
with absolute paths resolved for the current installation
- Handle missing readline on Windows (graceful degradation)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply at anthropic.com>
