[mlir-c] Add structural operation equivalence (#206537)
Exposes `OperationEquivalence` through the MLIR C API so callers can compare operations structurally rather than by handle identity.
Assisted by: Claude
[lld][MachO] Avoid quadratic iteration over already-folded symbols during ICF (#213339)
`ConcatInputSection::foldIdentical()` clears the folded functions
`originalUnwindEntry`.
However, it cleared every symbol: with N members, the repeated clearing
is **O(N²)**.
This is redundant: we should only remove the incoming `copy->symbols`.
This patch moves the removing loop ahead and adds more clear comments on
why we need to skip the first element.
Also added a new `lld/test/MachO/icf-scale-same-class.s` with 500K
identical functions as a stress test, which would've taken minutes to
link, and less than a second with the patch.
Testing on real-world app (IRPGO instrumentation + ICF) find that we
achieved a 19x speed up (1:14:42 -> 3:55)
clang/AMDGPU: Require 16-bit-insts for half typed image builtins
Typed image load/store operations with 16-bit elements require d16
support which was introduced in gfx8. They were previously gated only
on image-insts, so they were wrongly accepted on targets that have
images but lack 16-bit support (e.g. gfx700), where the backend then
fails to select.
Co-Authored-By: Claude (Opus 4.8) <noreply at anthropic.com>
clang/AMDGPU: Require 16-bit-insts for half typed buffer format builtins
Typed buffer format load/store operations with 16-bit elements require
d16 support which was introduced in gfx8. These builtins previously had
no required features at all, so they were accepted (and then crashed the
backend) on targets without 16-bit support.
Diagnose these in Sema, parallel to the image builtins. The manual
verification here suprised me. The automatic builtin feature verification
is enforced in codegen, which seems like a layering violation which
should be fixed.
Co-Authored-By: Claude (Opus 4.8) <noreply at anthropic.com>
clang: Replace Is*OffloadArch free functions with OffloadArch methods
Drop the IsNVIDIAOffloadArch/IsAMDOffloadArch/IsIntel*OffloadArch free
functions in favor of the OffloadArch member predicate functions.
Co-authored-by: Claude (Claude-Opus-4.8) <noreply at anthropic.com>
[InstSimplify] Defer to ConstantFold in simplifyInstrinsic (#205061)
Defer to ConstantFolding on all-constant operands, in
llvm::simplifyIntrinsic. The patch adds a context-function argument to
ConstantFoldIntrinsic for strictfp information, which is used by a new
canConstantFoldIntrinsic under canConstantFoldCallTo: it was
necessitated by exposing the constant-folder via
llvm::simplifyIntrinsic. The patch only has impact on passes that use
simplifyIntrinsic via InstSimplifyFolder, other than InstCombine, which
already constant-folds intrinsics.
[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>
devel/magit: Update to 4.7.0
- Track upstream's replacement of docs/RelNotes/ with
per-major-release docs/CHANGELOG.N files in PORTDOCS and the DOCS
install
- Fix the DOCS and PDF options. With the custom do-build target,
DOCS_ALL_TARGET/PDF_ALL_TARGET never ran, so the HTML and PDF
manuals were never built and staging failed. Build them explicitly
in post-build-DOCS-on/post-build-PDF-on, under MAKE_ENV so the
sed=gsed binary alias is on PATH.
Changelog: https://github.com/magit/magit/blob/v4.7.0/docs/CHANGELOG.4#v470----2026-08-01
Sponsored by: The FreeBSD Foundation
