[RISCV] Use sspush/sspopchk mnemonics for shadow stack codegen (#200182)
After PR #178609, SSPUSH/SSPOPCHK/C_SSPUSH became encodable under the
Zimop/Zcmop predicates alone (old Zicfiss requirement was relaxed to
Zimop).
Before that, the hw-shadow-stack codegen path introduced in PR #152251
needed PseudoMOP_* wrappers that expand to the base
MOP_RR_7/MOP_R_28/C_MOP_1, because the real SSPUSH/SSPOPCHK/C_SSPUSH
were gated by Zicfiss while the codegen path only required Zimop.
As a side effect, the assembler printed `mop.rr.7 zero, zero,
ra`/`mop.r.28 zero, ra` for hw-shadow-stack functions instead of the
proper `sspush ra`/`sspopchk ra` mnemonics from the CFI RISC-V spec
(while the disassembler already printed proper sspush/sspopchk.
With predicates now aligned, the pseudos are just plain wrappers with
identical predicates to the real instructions, so they became redundant.
This patch removes them and emits SSPUSH/SSPOPCHK/C_SSPUSH directly.
[Object][DirectX] Fix UB when parsing a DXContainer from a null buffer (#200865)
Adds an additional check that `Src != nullptr` before doing other
operations on it, which caused a UB in one test with #200413.
[lldb] Skip libc++ category tests on Darwin when no in-tree libc++ is built (#199262)
`canRunLibcxxTests()` previously short-circuited with "libc++ always
present" for all Darwin targets, meaning the "libc++" test category was
never skipped on macOS — even when `LLDB_HAS_LIBCXX` is `OFF` and no
`--libcxx-include-dir` / `--libcxx-library-dir` are passed to dotest.
The tests would silently run against the system libc++ instead of an
in-tree build, producing results inconsistent with what the suite is
designed to validate.
This fixes `canRunLibcxxTests()` to apply the same `libcxx_include_dir`
/ `libcxx_library_dir` guard on `Darwin` that `Linux` already uses. When
those dirs are absent (i.e. no in-tree libc++ was built), the function
returns `False` and `checkLibcxxSupport()` appends `libc++` to
`skip_categories` — skipping those tests exactly as Linux does.
On the CMake side, the `SEND_ERROR` for `LLDB_HAS_LIBCXX=OFF` is
downgraded to a `WARNING` so downstreams that intentionally skip the
runtimes build can keep `LLDB_INCLUDE_TESTS=ON` for the tests they
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[lldb/test] Fix variant double-expansion in LLDBTestCaseFactory (#200943)
LLDBTestCaseFactory generates the actual test methods that get run: for
every `test*` method on a TestBase subclass, it stamps out one copy per
debug-info format (dwarf, dsym, ...) and, if a variant like
swift_clang's clang/noclang is registered, one copy per variant value on
top. When two test methods in the same class have names that share a
prefix and the longer one is declared first in the file, the shorter
method's expansion ends up re-stamping every copy already produced for
the longer one.
The variant-expansion helper decides what to copy by name-prefix match:
when processing `test_expr`, it grabs `test_expr`, `test_expr_dwarf`,
`test_expr_dsym`, ... and produces a clang/noclang suffix for each one.
The factory was handing it the full running dict of already-synthesized
methods, so by the time `test_expr`'s turn came, the dict also held
`test_expr_stripped_dwarf` and `test_expr_stripped_dsym` from
`test_expr_stripped`. Those names start with `test_expr_` too, so they
pick up a second clang/noclang suffix and inherit `test_expr`'s
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[Polly] Remove unused DenseMapInfo::getTombstoneKey (#200963)
#200595 changed DenseMap to no longer create tombstone buckets, so
DenseMapInfo<T>::getTombstoneKey() is never called. Remove dead
definitions and dead tombstone branches.
lib/msun: Replaced pattern to force exception in _num families
Replaced the old pattern of using a ternary to force addition
(raising exceptions for sNaN's) with a new one using a volatile
variable. The _mag_num family was already implemented with this pattern
PR: 294719
Reviewed by: fuz, kargl
MFC after: 1 month
(cherry picked from commit 7c20e15592a07ea457cacb0d6706948815c8420e)
[clang] fix transformation of SubstNonTypeTemplateParmExpr nodes from typealiases and concepts
This makes sure SubstNonTypeTemplateParmExpr produced from non-specialization
decls (Type alias templates and concepts) are correctly transformed.
This makes the SubstNonTypeTemplateParmExpr store the parameter type directly,
and uses that instead of relying on the AssociatedDecl.
Fixes #191738
Fixes #196375
[RISCV] Improve shrinkDemandedConstant. (#196585)
Teach shrinkDemandedConstant to restore a constant that can be
materialized as:
lui a0, hi20
addi(w) a0, a0, lo12
slli a1, a0, 32
add a0, a0, a1
or:
lui a0, hi20
addi(w) a0, a0, lo12
pack a0, a0, a0
This fixes a regression between clang 18 and 19 on this test case
https://godbolt.org/z/Ma746a8xP
[OpenMP] Introduce the ompx_name clause for kernel naming
This adds support for the ompx_name clause that allows users to specify
custom kernel names for OpenMP target offloading regions. The clause
accepts a string literal and overrides the default compiler-generated
kernel names.
Example usage:
#pragma omp target ompx_name("my_kernel")
{ ... }
Kernel names need to be unique or they are diagnosed at compile or link
time as errors.
Co-Authored-By: Claude (claude-sonnet-4.5) <noreply at anthropic.com>
(devel/R-git2r) Updated 0.35.0 to 0.36.2
# git2r 0.36.2 (2025-03-29)
## CHANGES
* Use 'pkg-config --static --libs' in the build configuration script
on the Darwin platform.
# git2r 0.36.1 (2025-03-28)
## CHANGES
* Updated the SystemRequirements field in the DESCRIPTION file to
include the libgit2 dependencies libssh2 and openssl.
* Improved the error message in the build configuration script to also
mention the library dependencies 'openssl', and 'libssh2' when the
requirement 'libgit2 >= 1.0' could not be satisfied
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[NVPTX][clang] Remove nvvm scoped atomic intrinsics; use atomicrmw/cmpxchg (#200735)
The
`llvm.nvvm.atomic.{add,exch,max,min,inc,dec,and,or,xor,cas}.gen.{i,f}.{cta,sys}`
intrinsics are redundant; we can use atomicrmw / cmpxchg with a syncscope.
Moreover, the nvvm atomics are problematic because they don't have
unsigned min/max opcodes. Clang uses these intrinsics and currently emits
signed min/max for what should be unsigned operations!
Fix by doing the following.
- Remove the nvvm intrinsics.
- Auto-upgrade the removed intrinsics to atomicrmw/cmpxchg.
- Make clang Clang emits atomicrmw/cmpxchg directly.
(devel/R-gert) Updated 2.1.4 to 2.3.0
2.3.1
- git_stat_files() gains a 'max' parameter
- Fix function declaration error
2.3.0
- Add git_worktree() family of functions (#252)
- Reformat code with air
2.2.0
- Windows: update to libgit2 1.9.1
- Fix unit tests for other default branch names
(devel/R-fs) Updated 1.6.5 to 2.1.0
# fs 2.1.0
* Also prefer system libuv on Ubuntu Linux
* fs now works with libuv from r-wasm for webr
* On CRAN MacOS we can use the new local static libuv from the 'recipe':
https://github.com/R-macos/recipes/pull/87
# fs 2.0.1
* Fix bug in finding system version of libuv, now actually works :)
* Workaround for MacOS if no cmake is available
# fs 2.0.0
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(devel/R-diffobj) Updated 0.3.5 to 0.3.6
# diffobj
## v0.3.6
* Fix bad xrefs in docs (h/t CRAN team).
* [#159](https://github.com/brodieG/diffobj/issues/154): make it clearer how to
adjust diff panel headers/titles (aka banners).
[libc] Renaming Float128 (DyadicFloat<128>) to DFloat128 (#200907)
This is to be able to use the `Float128` for emulated float128 type.
[#200565 ](https://github.com/llvm/llvm-project/pull/200565)
