[libc][threads] adjust futex library and expose requeue API (#192478)
Make futex a common abstraction layer across platforms.
(linux/wasm/macOS/windows/fuchsia all have the support, which we can
align their support later on).
This patch also expose a requeue API that returns ENOSYS on unsupported
platforms. The requeue operation will be needed to reimplement a strict
FIFO style condvar similar to musl.
Additional cleanup is done to change raw syscall return value to
`ErrorOr<int>`.
Assisted-by: Codex with gpt-5.4 medium fast
[mlir][memref] Remove unit-stride restriction in SubViewOp folding (#192437)
This PR replaces manual offset/size resolution with `affine::mergeOffsetsSizesAndStrides`, simplifying the code and extending subview-of-subview folding to support non-unit strides.
[RISCV] Support MachineOutlinerRegSave for RISCV (#191351)
This patch adds support for the RegSave strategy in the RISC-V
MachineOutliner pass. It uses t1–t6 to preserve the t0 value across the
outlined function call when t0 is unavailable. This enables more
potential outlining candidates.
---------
Co-authored-by: Craig Topper <craig.topper at sifive.com>
CI: Do not set scheduler in qemu-1-setup.sh
We've seen some qemu-1-setup failures while trying to change the
runner's block device scheduler value to 'none':
We have a single 150GB block device
Setting up swapspace version 1, size = 16 GiB (17179865088 bytes)
no label, UUID=7a790bfe-79e5-4e38-b208-9c63fe523294
tee: '/sys/block/s*/queue/scheduler': No such file or directory
Luckily, we don't need to set the scheduler anymore on modern kernels:
https://github.com/openzfs/zfs/issues/9778#issuecomment-569347505
This commit just removes the code that sets the scheduler.
Reviewed-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Signed-off-by: Tony Hutter <hutter2 at llnl.gov>
Closes #18437
[DAGCombiner] Extend convertBuildVecZextToZext to sign extends (#192372)
Generalize the existing fold that collapses a BUILD_VECTOR of ZERO_EXTEND
(or ANY_EXTEND) of EXTRACT_VECTOR_ELTs into a single vector extend so that
it also handles SIGN_EXTEND. Mixed sign and zero extends remain unsupported
because their high-bit semantics differ, so the combine bails out in that
case.
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply at anthropic.com>
ntp_adjtime.2: Increase visibility
+ s/ntp/ntpd/ for correctness + apropos results in document description
+ silence a linter warning by escaping a period with a zero-width space
MFC after: 3 days
15.1: Update stable/15 to -PRERELEASE
This marks the start of the FreeBSD 15.1 release cycle; the stable/15
tree is now in "code slush".
Developers are encouraged to prioritize fixing bugs (and/or merging bug
fixes from HEAD) over new features at this time. Commit approval from
re@ is not required but if new features introduce problems they may be
removed from the release.
Approved by: re (implicit)
Sponsored by: OpenSats Initiative
[AMDGPU] Add `.amdgpu.info` section for per-function metadata
AMDGPU object linking requires the linker to propagate resource usage
(registers, stack, LDS) across translation units. To support this, the compiler
must emit per-function metadata and call graph edges in the relocatable object
so the linker can compute whole-program resource requirements.
This PR introduces a `.amdgpu.info` ELF section using a tagged, length-prefixed
binary format: each entry is encoded as:
```
[kind: u8] [len: u8] [payload: <len> bytes]
```
A function scope is opened by an `INFO_FUNC` entry (containing a symbol
reference), followed by per-function attributes (register counts, flags, private
segment size) and relational edges (direct calls, LDS uses, indirect call
signatures). String data such as function type signatures is stored in a
companion `.amdgpu.strtab` section.
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[CIR][NFC] Upstream IR roundtrip tests for branch and loop ops (#189006)
Add `clang/test/CIR/IR` roundtrip tests for `cir.br`, `cir.brcond`,
`cir.for`, `cir.while`, and `cir.do`.
This adds parser/printer coverage for the textual forms of these
control-flow operations.
Partially addresses #156747.
[flang][cuda] Add missing pointer deallocation entry point (#192566)
We were missing the deallocation entry point for pointer and wiring all
to allocatable deallocate which will trigger Invalid descriptor error.
Linux 7.0 compat: META
Update the META file to reflect compatibility with the 7.0
kernel.
Reviewed-by: Tony Hutter <hutter2 at llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1 at llnl.gov>
Closes #18435
