[libc][NFC] Migrate unistd entrypoints to syscall wrappers (#204176)
Migrated link, ftruncate, and getentropy entrypoints to use their
corresponding syscall wrappers instead of direct syscall_impl calls.
Updated CMake dependencies accordingly.
Assisted-by: Automated tooling, human reviewed.
[clang][CodeGen] Fix crash on if/switch init-statement ending in noreturn (#201047)
EmitStmt may `ClearInsertionPoint()` to mark dead code, EmitDecl is not
prepared to handle it. Fix by `EnsureInsertPoint()` in transition from
EmitStmt to EmitDecl. If/Switch body may contain a label which makes
them not dead.
Fixes #115514.
[LifetimeSafety] Mark lifetime safety LangOptions as `Benign` (#204316)
Without this, we cannot load modules built without lifetime safety.
Analysis options are in general benign and does not effect AST
construction.
See doc:
```cpp
/// For ASTs produced with different option value, signifies their level of
/// compatibility.
enum class CompatibilityKind {
/// Does affect the construction of the AST in a way that does prevent
/// module interoperability.
NotCompatible,
/// Does affect the construction of the AST in a way that doesn't prevent
/// interoperability (that is, the value can be different between an
/// explicit module and the user of that module).
Compatible,
/// Does not affect the construction of the AST in any way (that is, the
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[LV] Add initial cost model for VPScalarIVSteps (#203347)
This PR currently only adds a cost model for integer types in
non-replicating regions in order to limit the scope of impact.
We can also support replicating regions, but that requires
looking for a recipe with an underlying value in the same
region in order to get a BasicBlock to pass in to the
getPredBlockCostDivisor function. This can be done in a future
PR.
[DirectX][ObjectYAML][NFC] Remove unused function (#204019)
A small follow-up for #202761.
`updateSize()` function added there is a rebase artifact. It is never
actually used. This change removes it.
sync -D_LIBCPP_USE_LOWER_DEQUE_BLOCK_SIZE patches from devel/llvm/22
so that this can build on lower-memory archs with llvm 22 (because it
spends hours building an additional copy of clang...)
[FuncSpec] Do not specialize interposable functions (#204314)
We cannot specialize interposable functions, because the definition we
see may not be prevailing one. The prevailing definition can have
arbitrary different behavior.
We *can* still specialize inexact definitions like linkonce_odr, similar
to inlining.
[llvm] Fix unused function warning in Parallel (#204114)
When llvm is built without threading support:
<...>/llvm-project/llvm/lib/Support/Parallel.cpp:230:13: warning: unused
function 'isNested' [-Wunused-function]
230 | static bool isNested() {
| ^~~~~~~~
The function is only used once, so I've put the code into the caller,
which is itself guarded with `#if LLVM_ENABLE_THREADS`.
Function added in 8daaa26efdda3802f73367d844b267bda3f84cbe / #189293.
[mlir][tosa] Add row_gather operator (#202895)
Adds support for the row_gather operator defined by the TOSA
specification, see https://github.com/arm/tosa-specification/pull/60.
This includes:
- Operator definition
- Verification logic for the operator
- Output shape inference for the operator
- Validation checks to ensure compliance with the TOSA specification
including profile compliance and level checks.
- Canonicalization to replace row_gather with gather when row_count is
statically known to be 1.
It does not yet cover support for MXFP types. This will be added once
block scaled types are supported.
[lldb][test] Cleanup and modernize TestHiddenIvars.py (#202023)
This is simple rewrite of the test. The patch improves three things:
* It replaces old expect tests with the new expect_* variants that no
longer rely on substring matching.
* It unifies the strip/non-stripped checks as we actually produce
identical SBValues in both cases (by fetching data from the Objective-C
runtime).
* It builds this test with a shared build directory. Our stripping logic
generates a new stripped binary in a subdirectory and doesn't touch the
shared build files. This also halves the test runtime to 6s.
[lldb][test] Only calculate LLDB python path once (#201327)
We spend about 70ms each dotest invocation recalculating the path where
the LLDB module is. This patch changes this so that dotest calculates
this path once and passes it to every dotest invocation.
As a fallback, we still support inferring the location from LLDB as
before, but I would propose we drop this support in the future.
[MIPS] soft-promote `f16` also when using `+msa` (#204158)
Fixes https://github.com/llvm/llvm-project/issues/202808
Re-lands https://github.com/llvm/llvm-project/pull/203065
Make use of the default soft-promote mechanism for f16, rather than an
ad-hoc approach making f16 storage-only.
In theory you could leave it at that, but I added custom implementations
to make use of the instructions for `FP16_TO_FP` and `FP_TO_FP16`, and
manually apply the "fptoui to fptosi trick" which generates shorter
code.
I've now tested that, in combination with
https://github.com/llvm/llvm-project/pull/203390, this PR is able to
build and run the rust `std` test suite, which exercises both `f16` and
vectors a bunch. The tests all pass under `qemu` as well.
The last commit fixes an integer overflow bug that triggered UBSan and
led to an earlier revert of these changes.
[InstCombine] Fold X == Identity ? Y : min/max(X, Y) (#202748)
Fixes #202576
Fold:
```llvm
select (X == -1), Y, umin(X, Y) -> umin(X, Y)
select (X == 0), Y, umax(X, Y) -> umax(X, Y)
select (X == SignedMax), Y, smin(X, Y) -> smin(X, Y)
select (X == SignedMax), Y, smax(Y, X) -> smax(X, Y)
```
Snd the inverted/commuted forms.
AI note: I used AI to help me read through the codebase and write the
tests.
rpki-client: unify CMS signed object parsers
This commit starts unifying various CMS signed object parsers in
preparation for a lot more refactoring of this long-accumulated
copy-paste mess.
The signed object is passed as a void * object to various handlers, so
these handlers all have the same signature.
In this step, *_parse() is essentially split into allocation plus:
1. *_cert_info(), which checks some basic things on the EE cert (usually
inheritance, presence or absence of RFC 3779 extensions). For MFTs
it also extracts some info and hangs that off mft.
2. the already existing *_parse_econtent()
3. *_validate() that does some validation steps and sets ->valid.
In most signed object handlers the validate step can't currently
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kern_linker.c: re-apply some more bits from db887713de2bf5
The definition of the EXTERR_CATEGORY symbol in the .c file is needed
for the script to regenerate identical context of
gen/exterr_cat_filenames.h.
Sponsored by: The FreeBSD Foundation
AMDGPU: Refactor AMDGPUTargetID to not store MCSubtargetInfo
Store the triple string and GPUKind instead. The dependence
on checking AMDHSA seems like an anti-feature, but maintain the
behavior of not printing the modifiers for other OSes. Start
parsing the target ID instead of performing a direct string
comparison. Also improve test coverage for the treatment of the
environment component of the triple. The main behavioral change
is this will now produce normalized triples in the output and
diagnostics. Practially, this means all of the places that
currently emit "--" will be expanded into "-unknown-".
Co-Authored-By: Claude Opus 4.6 <noreply at anthropic.com>
Merge tag 'bpf-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
"Major changes:
- Recover from BPF arena page faults using a scratch page and add
ptep_try_set() for lockless empty-slot installs on x86 and arm64.
This allows BPF kfuncs to access arena pointers directly.
The 'arena_direct_access' stable branch was created for this work
and was pulled into sched-ext and bpf-next trees (Tejun Heo, Kumar
Kartikeya Dwivedi)
- Lift old restriction and support 6+ arguments in BPF programs and
kfuncs on x86 and arm64 (Yonghong Song, Puranjay Mohan)
Other features and fixes:
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