[XRay][Hexagon] Use PC-rel addressing for runtime globals in trampoline (#203122)
The trampolines load the runtime handler globals
(__xray::XRayPatchedFunction and friends) with absolute
constant-extended immediates, which cannot be used in a PIC/PIE link, so
linking a default-PIE executable against the xray runtime fails -- and
-fPIC on user code does not help, the bad relocations are inside the
runtime archive:
ld.lld: error: relocation R_HEX_32_6_X cannot be used against symbol
'__xray::XRayPatchedFunction'; recompile with -fPIC
[XRay][Hexagon] Fix immext encoding of high bits in sled patcher (#203129)
encodeConstantExtender() places the high 12 bits of the 26-bit extension
at the wrong offset (<<16 instead of <<2), dropping them for any
constant above ~2^20. The runtime sled patcher then encodes a corrupted
trampoline address for PIE executables (load base 0x08000000+), so the
first patched function call jumps to a bogus address and crashes.
[DirectX] Generate PDB file with debug info (#202762)
This change adds DXContainerPDB pass for DirectX pipeline.
The pass creates PDB file containing sections with shader debug
information. PDB files comply with the format used by existing DirectX
debugging tools.
---------
Co-authored-by: Vladislav Dzhidzhoev <vdzhidzhoev at accesssoftek.com>
[flang][Semantics] Warn on repeated do-variable in nested I/O implied DO (#198757)
Fixes #198528
Add a warning when an io-implied-do's do-variable appears as, or is
associated with, the do-variable of a containing io-implied-do. This
diagnoses violations of Fortran 2023 12.6.3p7:
>The do-variable of an io-implied-do that is in another io-implied-do
shall not appear as, nor be associated with, the do-variable of the
containing io-implied-do.
Since this is not a constraint, a warning is emitted rather than an
error. As suggested in the associated issue, the warning is on by
default and can be suppressed with `-Wno-io-implied-do-index-conflict`.
The check detects:
- Direct name reuse (same symbol in inner and outer implied DO)
- Association via EQUIVALENCE
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[lldb] Add unit tests for the MCP server (#202752)
Add unit-test coverage for the MCP protocol types and server under
source/Protocol/MCP and the MCP plugin under
source/Plugins/Protocol/MCP.
The Server handlers run over the in-memory TestTransport, which gains
SimulateError/SimulateClosed/SetRegisterMessageHandlerShouldFail helpers
to drive the handler lifecycle without a real socket.
Code that touches the filesystem or otherwise requires mucking with the
test environment are deliberately left uncovered until those layers can
be mocked.
Assisted-by: Claude
[lldb] Strip code pointers in lldb-server test binary on arm64e (#203988)
Otherwise an unstripped pointer will be sent to debugserver. LLDB strips
pointers before sending them to debugserver, so debugserver does not
know how to handle it.
This fixes TestGdbRemoteSingleStep.py, TestGdbRemote_qMemoryRegion.py,
and TestGdbRemote_vCont.py on arm64e.
AMDGPU: Replace tgsplit subtarget feature with attribute
This is a per-entrypoint property and has a corresponding
assembler directive, so it should not be baked into the
subtarget. I couldn't find much documentation on what this
actually does, so the description isn't great.
Fixes #204149
Co-authored-by: Claude Opus 4.6 <noreply at anthropic.com>
[mlir][arith] Fix crash in ConstantOp range inference for zero-element constants (#204180)
arith::ConstantOp::inferResultRanges computes the union of element
ranges by iterating a DenseIntElementsAttr. For a zero-element constant
(e.g. ) the loop body never runs,
leaving the std::optional result unset.
-> This fixes #202531
[SLP][NFC] Fix compile-time hang in isMaskedLoadCompress
For a large gathered-load cluster LoadVecTy spans hundreds of vector
registers and the shuffle cost query blows up in processShuffleMasks.
The shuffle cost is non-negative, so bail out before computing it when
VectorGEPCost + LoadCost already reaches GatherCost (not profitable).
Fixes #204163
Reviewers:
Pull Request: https://github.com/llvm/llvm-project/pull/204211
