[libc] Fix LLVM_LIBC_FUNCTION on 32-bit x86 Windows (#213456)
Previously, trying to compile libm with LIBC_COPT_PUBLIC_PACKAGING
defined failed on 32-bit Windows with
error: alias must point to a defined variable or function
This is because 32-bit Windows adds a leading underscore to __cdecl C
functions, making the alias declaration not find its target symbol name.
The same problem exists on Apple platforms, which as solution don't emit
the alias for the C++ LIBC_NAMESPACE:: symbol.
Do the same on 32-bit Windows as on Apple platforms: Emit only
the underscore-prefixed symbol, not the LIBC_NAMESPACE:: alias.
[mlir][xegpu] Add xegpu.lane_shuffle op (#210777)
Add a lane-level XeGPU operation that re-distributes a subgroup's
fragments across its lanes without changing the element type.
The op takes a 1D vector — the fragment held by one lane — and returns a
fragment of the same type. A pack/unpack mode selects the direction:
viewing the subgroup as an S x N element grid (S = subgroup size, N =
elements per lane), pack moves element j of lane i from logical position
j*S + i to i*N + j, so a lane's elements end up at consecutive
positions; unpack is the reverse.
This implements xegpu.convert_layout semantics at the lane level when
lane_layout is unchanged but lane_data differs.
assisted-by-claude
---------
Co-authored-by: Claude Opus 4.8 <noreply at anthropic.com>
[IR] Truncate struct field offsets exceeding the pointer index width. (#213436)
Update accumulateConstantOffset and collectOffset to implicitly truncate
struct field offsets. This fixes crashes in the new tests, where the
field offset does not fit in the index width.
PR: https://github.com/llvm/llvm-project/pull/213436
[ELF] Retain .rela.dyn for PPC64 PI long-branch thunks (#212078)
PPC64PILongBranchThunk adds a relative relocation, which runs after
removeUnusedSyntheticSections. With no other dynamic relocation
.rela.dyn is incorrectly removed.
Extract the .rela.auth.dyn condition (#96496, #195649) to `mayGrowLate`
and add a .branch_lt check.
[flang][OpenMP] Version-dependent parsing of map-type-modifier
Up until 5.2, ALWAYS, CLOSE, and PRESENT were keywords of the
map-type-modifier. Starting from 6.0 they all became their own
single-keyword modifiers. This allowed specifying them together,
unlike in the past where map-type-modifier was unique.
To avoid using a single representation of the modifiers, and be
able to validate them through non-conditional properties, the
AST was rewritten back to the older form in canonicalization
when the spec version was set to 5.2 or earlier.
Now that the parser is version-aware, it can generate the desired
AST from the start.
Additionally, extract the OMPX_HOLD modifier out of the map-type-
modifier into its own AST node regardless of version.
[flang] Pass LangOptions to parser via UserState
This will help deal with syntax changes across different versions of
OpenMP. There are certain cases where being able to generate different
AST for the same source code depending on the version of the OpenMP
spec makes semantic analysis easier.
[lldb][Windows] Improve error messages in PlatformWindows.cpp (#213011)
The reason for the failure is known but is not in the log. Add a helper
function to map the error to a string and log it.
---------
Co-authored-by: Jonas Devlieghere <jonas at devlieghere.com>
[lldb] Introduce the require decorator (#212753)
Currently, it is unclear if a test that is skipped is either:
- Unsupported because it will never run (macosx tests should not run on
Windows).
- Skipped because it's supposed to work but does not yet.
`@expectedFailure` is not always an option because a test might be
timing out and waiting 600s for it to fail is not acceptable.
This patch introduces 2 new decorators to differentiate those tests:
- `@requireX` meaning the tests require X to run (e.g `@requireDarwin`).
- `@requireNotX` meaning the tests requires anything but `X` to run (e.g
`@requireNotDarwin`).
In the tests results summary, this introduces a new category: `skipped`
tests:
- `@requireX` -> `UNSUPPORTED`
- `@skipIfX` -> `SKIPPED`
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[libc] Add conversion tests between emulated and native f128 (#213422)
Adds conversion tests between emulated and native float128 type, which
would be later used in f128 functions .
[MLIR][LLVM] Preserve unknown function metadata on import
Import representable non-debug function metadata without a kind-specific
dialect conversion into `LLVMFuncOp` `function_metadata`. Preserve repeated
metadata kinds through the generic carrier so LLVM IR import and export can
round-trip the supported generic metadata subset.
Warn and drop attachments outside that subset while continuing to import the
function.
[MLIR][LLVM] Translate LLVMFuncOp function metadata
Materialize LLVMFuncOp function_metadata through ModuleTranslation metadata conversion. Attach function metadata after module-level symbols are mapped so metadata references to functions, globals, aliases, and ifuncs can be resolved.
[MLIR][LLVM] Add function metadata to LLVMFuncOp
Add a generic LLVM dialect carrier for LLVM IR function metadata on LLVMFuncOp.
Represent attachments as an ordered list so repeated metadata kinds, such as
multiple type metadata attachments, can be preserved while keeping metadata names
language-agnostic.
[MLIR][LLVM] Preserve global value metadata operands on import
Import global value references inside LLVM metadata operands as LLVM dialect metadata symbol-reference attributes. Add llvm.read_register import coverage for function, global, alias, and nameless-global metadata operands.
[MLIR][LLVM] Share LLVM metadata attribute translation (#203016)
Share LLVM dialect metadata materialization through `ModuleTranslation`
so named metadata and metadata-as-value lowering use one conversion
path. Resolve metadata symbol references to functions, globals, aliases,
and ifuncs, and diagnose malformed required metadata before lowering.
Rename `MDFuncAttr` to `MDGlobalValueAttr` to reflect its support for
symbol-backed global values.
