[Offloading] Add support for compressed OffloadBinary types
Summary:
Offload binaries are used to store many heterogenous architectures into
a singel offloading blob. These lists can get very large so this PR adds
the option to compress them with the LLVM provided compression
libraries.
The implementation is quite simple, we simply compress all the buffers
after the header into a single compressed blob, then re-construct the
header. Extracting is the reverse.
The biggest change is that the offload binary now **owns** the memory,
whereas before we simply took a reference to it. This is necessary
because the decompression must create new memory compared to what the
user provided. This adds an extra copy internally, but it also
simplifies the V2 additions.
This does not wire up any clang/HIP support, just providing the
functionality.
[LLVM] Add zstd compressed frame magic to LLVM magic
Summary:
ZSTD uses magic to indentify compressed frames in the bitstream. Add
this as a recognized file magic type so that we can identify compressed
streams that LLVM creates.
[AMDGPU][lld] Remove "using namespace llvm" from AMDGPU.cpp
AMDGPU class in anonymous namespace collides with llvm::AMDGPU,
causing an error with MSVC.
[ld64.lld, llvm-otool] Minimal arm64e.x1 support (#222721)
Just enough for `llvm-otool -hv` to dump the cpusubtype, and for
ld64.lld to not reject .tbd files that have an arm64e.x1 slice.
This is needed to link mac binaries against the macOS 27 SDK.
[lldb][Darwin] Don't mark threads as having hit bp if not (#222488)
When a multithreaded program stops exeuction with a mach exception on
more than one thread, if one of the threads is *at* a breakpoint site,
but hasn't *hit* the breakpoint yet, lldb was incorrectly stepping over
the breakpoint instruction when it resumed execution. This would result
in TestConcurrentManyBreakpoints reporting that a breakpoint hit on 100
threads was only hit 99 times, because one of the breakpoints was
silently stepped past without being counted.
The bug happened because on Darwin/debugserver systems the stop info
packet includes a `jstopinfo` which is a JSON dictionary of all threads
that have an exception. When `jstopinfo` is present, ProcessGDBRemote
was initializing any thread not included in `jstopinfo` as having an
empty StopInfo. It did this without checking if we are _at_ a breakpoint
site, and marking the thread as "Stopped at unexecuted breakpoint
instruction". Because the threads now had an empty StopInfo already, the
other places where we might check "if stopped at unexecuted breakpoint
instruction" were never executed.
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[flang][acc] Update descriptor attach rules to only pointer/allocatable (#222760)
When a clause maps only a descriptor's data, ACCMapInfoPrep should infer
an attach point and name the descriptor only for POINTER and
ALLOCATABLE, which OpenACC requires to be maintained on the device. See
flang/docs/OpenACC-descriptor-management.md.
[CIR][OpenCL] Lower OpenCL language version metadata to LLVM dialect
Propagate CIR OpenCL language version module attributes as LLVM dialect named metadata before LLVM IR translation.
Assisted-by: Codex / GPT-5.6 Sol
[CIR][OpenCL] Emit OpenCL language version metadata in CIR
Emit OpenCL and C++ for OpenCL language version attributes from CIRGen. Preserve the compatible OpenCL version and the C++ for OpenCL version separately so later lowering does not infer one from the other.
Assisted-by: Codex / GPT-5.6 Sol
[CIR][OpenCL] Add OpenCL language version module attributes
Add structured CIR module attributes for OpenCL and C++ for OpenCL language versions. Verify their module-level placement and version components so lowering can consume explicit source-language version state.
Assisted-by: Codex / GPT-5.6 Sol
fix: Supply the HIP SPIR-V version only for metadata emission
Fix the assertion exposed by PR #214246 under the version invariant from PR #219687. Supply OpenCL 2.0 in classic CodeGen and CIRGen without changing HIP language options or enabling OpenCL-only Sema restrictions.
Assisted-by: Codex / GPT-6
[mlir] Use pointers for static operation hooks to improve build time (NFC) (#222804)
Return raw function pointers from static operation-hook accessors to
avoid instantiating unique-function construction machinery for every
operation.
Across three controlled -j16 rebuilds of 44 registration TUs, median
instructions fell from 2.284T to 2.201T (-3.646%) and median wall time
fell from 41.04s to 38.80s (-5.458%).
Assisted-by: Codex
[mlir][LLVM] Use a disjoint scope domain when inlining noalias
This matches recent changes to the LLVM inliner.
AI disclosure: Claude wrote the code, I wrote the commit message and
have done initial review.
[mlir][LLVM] Add disjointScopes to AliasScopeDomainAttr
This also updates the MLIR-side inliner to clone disjoint domains
while cloning alias scopes, matching changes to LLVM.
AI disclosure: Claude wrote the code, I wrote the commit message and
looked at the code.
[AMDGPU] Use a disjoint scope domain for merged LDS structs
When lowering LDS values, all the values are mutually disjoint, so we
can use the newly-added disjoint scopes feature to simplify the IR.
AI disclosure: Claude wrote this and I reviewed it and wrote the
commit message
[AMDGPU] Use a disjoint scope domain for noalias kernel arguments
All noalias arguments of a kernel are disjoint with each other, so we
can use a disjoint scope to save on metadata construction.
AI disclosure: Claude wrote this, I looked at it and wrote this
message.
