[RISCV] Add PseudoTAILX7, PseudoTAILReg for cf-protection-branch (#220657)
Previously, PseudoTAIL selected between X6 and X7 at encode time by
checking the Zicfilp feature bit via getTailExpandUseRegNo. This is
incorrect for the codegen path because -fcf-protection=branch can emit
lpad without requiring Zicfilp to be enabled.
Add PseudoTAILX7 for codegen: when cf-protection-branch is active,
ISelLowering and the machine outliner now emit PseudoTAILX7 which
always expands using X7. The existing PseudoTAIL behavior is unchanged
— it still selects X6 or X7 based on Zicfilp at encode time, as
documented in the assembler manual.
Also add PseudoTAILReg ("tail address, register") assembly form that
lets users explicitly specify the scratch register for AUIPC+JALR
expansion, per the proposed syntax in
https://github.com/riscv-non-isa/riscv-asm-manual/pull/227.
IR: Introduce "thread-model" module flag (#222768)
Introduce the replacement for TargetOptions::ThreadModel, but
does not yet wire up the uses. This maintains the current values,
but I question if it makes sense to retain "posix" as the default.
POSIX sounds very target opinionated, but isn't used in a non-binary
way anywhere. Alternatively we could have a simple singlethread binary
flag, or name this something more general.
Follows the precedent of float-abi. It happens the triple default
is just POSIX, but theoretically targets like AVR should be defaulting
to singlethread.
Co-authored-by: Claude (Claude-Opus-4.8) <noreply at anthropic.com>
[MISched] Fix post-RA pickOnlyChoice debug logs (#222927)
On the way, adding a stable test for `pickOnlyChoice()` scheduling paths
directly, which has been missing, while filechecking the fixed tracing.
[libc++] Test LWG4113: Disallow `has_unique_object_representations<Incomplete[]>` (#169446)
We have been rejecting `has_unique_object_representations<Incomplete[]>`
since LLVM 6.
Some related change landed in Clang 19 due to
6451806ef73bb033be3f6e1599f3bcb224943206, and then a follow-up change
ae9990ed965118e7274a52399b43e3b9fb419a54 simplified error messages.
Test coverage for incomplete enumeration types is skipped for Clang-cl
mode, because an incomplete enumeration type is incorrectly considered
to be complete. See https://llvm.org/PR169472.
Co-authored-by: Louis Dionne <ldionne.2 at gmail.com>
IR: Introduce "thread-model" module flag
Introduce the replacement for TargetOptions::ThreadModel, but
does not yet wire up the uses. This maintains the current values,
but I question if it makes sense to retain "posix" as the default.
POSIX sounds very target opinionated, but isn't used in a non-binary
way anywhere. Alternatively we could have a simple singlethread binary
flag, or name this something more general.
Follows the precedents of float-abi. It happens the triple default
is just POSIX, but theoretically targets like AVR should be defaulting
to singlethread.
Co-authored-by: Claude (Claude-Opus-4.8) <noreply at anthropic.com>
IR: Add verifier checks and LangRef for llvm.loop.align (#221933)
Verify the nested !{!"llvm.loop.align", i32 N} tag.
Require exactly two operands, an integer constant of type i32 or
smaller, and a positive power-of-two value
Co-authored-by: Claude (Claude-Opus-4.8)
[CIR][OpenCL] Lower OpenCL language version metadata to LLVM dialect (#219689)
Propagate CIR OpenCL language version module attributes as LLVM dialect
named metadata before LLVM IR translation.
Assisted-by: Codex / GPT-5.6 Sol
RegisterCoalescer: Remove empty subranges after merging subranges
Merging subranges in joinVirtRegs didn't try to clear empty ranges after
refineSubRanges, manifesting in an assert in overlaps checks later.
Exposed with subregister liveness once LiveIntervals runs before TwoAddress.
Co-authored-by: Claude (Claude-Opus-4.8)
[mlir] Remove the memory space attribute restriction on memref types (#222995)
Follow-up to #187682. `isSupportedMemorySpace` only rejected builtin
attributes other than IntegerAttr/StringAttr/DictionaryAttr. This is a
leftover from when memory spaces were restricted to integers, and is now
inconsistent.
[Flang][Driver]Implemented support for option -momit-leaf-frame-pointer/-mno-omit-leaf-frame-pointer in flang (#216700)
Added support for `-momit-leaf-frame-pointer` /
`-mno-omit-leaf-frame-pointer` in the Flang compiler.
- The driver resolves the flags via `getFramePointerKind()` and forwards
`-mframe-pointer=<kind>` to flang -fc1, resulting in the LLVM IR
function attribute "frame-pointer"
- These options, used with `-fno-omit-frame-pointer`, control whether
leaf functions (functions that don't call other functions) retain or
omit the frame pointer.
- `fno-omit-frame-pointer -momit-leaf-frame-pointe`r : Keep the frame
pointer in non-leaf functions, but omit it in leaf functions (produces
"frame-pointer"="non-leaf").
- `fno-omit-frame-pointer -mno-omit-leaf-frame-pointe`r : Keep the frame
pointer in all functions, including leaf functions (produces
"frame-pointer"="all").
[OpenMP] [Flang] Add Fortran integer(kind=8) overloads for omp_lib APIs (#221451)
Fortran code that uses integer(8) arguments, including
-fdefault-integer-8, did not match omp_lib interfaces declared with
omp_integer_kind (typically kind 4). Added *_8 specific procedures to
named generic interfaces in omp_lib, exported matching Fortran and C
runtime entry points, and implemented the *_8 functions as thin wrappers
that saturate-convert arguments to 32-bit and call the existing APIs.
[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 (#219688)
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] 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
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
[CIR][OpenCL] Add OpenCL language version module attributes (#219687)
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
[ORC] Retire rt::SimpleExecutorMemoryManager* for sps_ci (#223113)
Move all clients to the sps_ci SimpleNativeMemoryMap / MemMgr
counterparts and retire the old rt::SimpleExecutorMemoryManager*
interface names.
[orc-rt] Add SocketHandle, NativeSocketHandle APIs (#223114)
SocketHandle is an owning wrapper for a NativeSocketHandle value, and
closes the native socket on destruction.
NativeSocketHandle is a typedef for the platform's native socket handle
type.
Only POSIX is implemented in this patch (in sys/posix/SocketHandle.cpp).
Windows support will be added later.
This will be used for an upcoming SimpleRemote-based ControllerAccess
implementation that uses sockets for transport (SocketSimpleRemoteCA).
[CIR][AMDGPU] Let amdgcn_lerp and ds_swizzle use the generic codegen path (#222204)
__builtin_amdgcn_lerp and __builtin_amdgcn_ds_swizzle both map 1:1 onto
concrete (non-overloaded) intrinsics and carry the ClangBuiltin<> marker
in IntrinsicsAMDGPU.td, so EmitBuiltinExpr already lowers them
automatically by forwarding the arguments to the intrinsic.
