[Clang][RISCV] Add packed pair byte intrinsics (#212589)
Add the 32-bit byte forms and the 64-bit byte/halfword forms of the
P-extension packed pair intrinsics to riscv_packed_simd.h using generic
shufflevector IR.
Extend the existing packed pair shuffle lowering to recognize the mixed
even/odd forms and select ppaireo/ppairoe in addition to ppaire/ppairo.
Add Clang CodeGen, LLVM CodeGen, and intrinsic header tests for the new
forms.
AMDGPU: Add supports-wgp subtarget feature
Whether the hardware supports WGP (work-group processor) execution mode is a
fixed per-GPU capability, distinct from the per-kernel cumode selection. Add
a dedicated feature instead of inferring from the generation and instructions.
Co-authored-by: Claude (Claude-Opus-4.8)
[lldb-mcp] Run managed debug sessions synchronously (#212681)
A debugger created for an MCP session has no event loop to service
asynchronous stops, so a resume returned before the process stopped and
every subsequent command failed against a still-running process. That
made breakpoint debugging unusable: `run` reported only the launch, and
`bt` that followed it errored out. Create these debuggers in synchronous
mode, as lldb-dap does.
[lldb] Reply to malformed requests and use JSON-RPC error codes (#212678)
The transport dropped a message that failed to parse: it logged the
error and returned, so a peer waiting on that request hung forever and
every message already buffered behind it was discarded. Keep going after
a failed parse, and add ReplyWithParseError so a message that is valid
JSON but not a valid request is answered against its own id. Unparseable
JSON still gets no reply, since it carries no id and JSON-RPC forbids
inventing one.
Method-not-found was raised with createStringError, which converts
through inconvertibleErrorCode() to -32603, so clients could not tell a
misspelled method from a server fault. Use the MethodNotFound error,
which already carries -32601, and give InvalidParams the -32602 code it
was missing.
[OFFLOAD] Add JIT support for SPIRV backend (#212823)
This PR adds support for SPIRV to plugins JIT. It is required in cases
when kernel is supplied in bitcode format for spirv triple.
[SPIRV] Emit NonSemantic DebugTypeComposite and DebugTypeMember. (#211638)
This PR adds `DebugTypeComposite` (opcode 10) and `DebugTypeMember`
(opcode 11):
1. `partitionTypes` clusters `DICompositeType` with
`DW_TAG_structure_type`, `DW_TAG_class_type`, or `DW_TAG_union_type`.
2. Each composite emits one `DebugTypeMember` per `DW_TAG_member`, then
a `DebugTypeComposite`. Members precede the composite.
3. Tag maps class, structure, and union to 0, 1, and 2. A forward
declaration emits `DebugInfoNone` for Size and no members.
4. A member whose type is not in `DebugTypeRegs` is skipped.
`DebugTypeMember` has no Parent operand, per the spec. Only the
composite references its members.
Tests in `llvm/test/CodeGen/SPIRV/debug-info/`:
1. `debug-type-composite.ll`: a struct with two members and a forward
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AMDGPU: Add supports-wgp subtarget feature
Whether the hardware supports WGP (work-group processor) execution mode is a
fixed per-GPU capability, distinct from the per-kernel cumode selection. Add
a dedicated feature instead of inferring from the generation and instructions.
Co-authored-by: Claude (Claude-Opus-4.8)
[libc][realpath] Follow symlinks (#212164)
This commit updates realpath to call `readlinkat` on symlinks during
path resolution.
Some notes on implementation:
- `PendingPath` uses a `cpp::string` to store unprocessed path
components. This could be more efficient by using a `PATH_MAX` buffer
and storing the path at the end of the buffer, which would allow for
easy prepending. However, using a `cpp::string` avoids the pointer
arithmetic and memory management that would involve.
- This PR implements `cpp::string::replace` to avoid pointer arithmetic
inside `realpath`. This should hopefully not be too inefficient, since
`prepend` reuses space from processed path components there's enough
room, there certainly exist some bad inputs that would cause many
`memmove` operations.
18276 rpcsec_gss cstyle cleanup
Reviewed by: Gordon Ross <Gordon.W.Ross at gmail.com>
Reviewed by: Bill Sommerfeld <sommerfeld at hamachi.org>
Approved by: Dan McDonald <danmcd at edgecast.io>
Guard eager metadirective privatization
Reject block variants whose private or firstprivate data sharing requires
variant-local host associations when delayed privatization is disabled.
Allow default(shared), which does not require those associations.
Track nested metadirective construct contexts
- Carry reachable replacement traits from enclosing metadirectives and
interleave them with source constructs in nesting order.
- Union candidate reachability across dynamic outer contexts while
pruning candidates that are shadowed independently of those contexts.
- Retain invariant dynamic-condition constraints with each construct
alternative so mutually exclusive runtime paths are not combined.
Diagnose interrupted metadirective loop associations
Treat OpenACC declarative and routine directives like OpenMP declarative
directives when they occur between a loop-associated metadirective and its
expected loop. Diagnose the missing associated loop while preserving pending
variants from enclosing scopes.
[CMake][Fuchsia] Compile runtimes with -ffuchsia-api-level (#211753)
Use the supplied Fuchsia SDK's version_history.json to deduce the
oldest API level still supported, and target that for toolchain
runtimes so they'll be runtime-compatible when linked into user
programs that target any SDK-supported API level.
[libc++][math] Add missing `constexpr since C++23` comment for `signbit` (#212458)
Adds the missing `// constexpr since C++23` for `std::signbit` in the
synopsis comments of `<cmath>`.
Follows-up: https://github.com/llvm/llvm-project/pull/105946.
[Darwin][tests] Partially restore some of the change in #212329 (#212826)
Restore the fallback path for ld-classic in #212329 to fix some of the
failing CI jobs due to some Xcode releases doesn't have the new linker
that supports `-save-temps` flag. Restore the logic so that `ld-classic`
is preferred over `ld` but no longer requires ld64/ld-classic.
In legacy releases only has ld64, ld64 is used. In latest releases where
ld64 is removed, new linker is feature completed and fully compatible
with ld64. During the transition period where ld64 is shipped as
ld-classic, prefer ld64 since new linker might not be feature complete.
rdar://183454376
