[all-commits] [llvm/llvm-project] 4c182d: [libc] Fix suseconds_t definition and utimes_test ...

Mon Apr 14 11:42:42 PDT 2025

  Branch: refs/heads/users/mingmingl-llvm/spr/aarch64jumptables
  Home:   https://github.com/llvm/llvm-project
  Commit: 4c182df633bcd7fd7f0634b2cf6bcab91c3674ec
      https://github.com/llvm/llvm-project/commit/4c182df633bcd7fd7f0634b2cf6bcab91c3674ec
  Author: Michael Jones <michaelrj at google.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M libc/include/llvm-libc-types/suseconds_t.h
    M libc/test/src/sys/time/CMakeLists.txt
    M libc/test/src/sys/time/utimes_test.cpp

  Log Message:
  -----------
  [libc] Fix suseconds_t definition and utimes_test (#134326)

The main issue was that the kernel expected `suseconds_t` to be 64 bits
but ours was 32. This caused inconsistent failures since all valid
`suseconds_t` values are less than 1000000 (1 million), and some
configurations caused `struct timeval` to be padded to 128 bits.

Also: forgot to use TEST_FILE instead of FILE_PATH in some places.

  Commit: b518242156f7c432249b1ca203a915b4f9906959
      https://github.com/llvm/llvm-project/commit/b518242156f7c432249b1ca203a915b4f9906959
  Author: Lei Huang <lei at ca.ibm.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/PowerPC/PPCInstrFutureMMA.td
    M llvm/lib/Target/PowerPC/PPCInstrMMA.td
    M llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
    M llvm/test/CodeGen/PowerPC/dmf-outer-product.ll
    M llvm/test/CodeGen/PowerPC/dmr-enable.ll
    M llvm/test/CodeGen/PowerPC/mmaplus-acc-spill.ll
    M llvm/test/CodeGen/PowerPC/mmaplus-intrinsics.ll
    M llvm/test/CodeGen/PowerPC/v1024ls.ll
    M llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt
    M llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt
    M llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s

  Log Message:
  -----------
  [PowerPC] Fix instruction name for dmr insert (#134301)

  Commit: 3a859b11e3ca758043b88693fdf990d361a02ef1
      https://github.com/llvm/llvm-project/commit/3a859b11e3ca758043b88693fdf990d361a02ef1
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/debugloc.ll

  Log Message:
  -----------
  [VPlan] Set and use debug location for VPScalarIVStepsRecipe.

This adds missing debug location for VPscalarIVStepsRecipe. The location
of the corresponding phi is used.

  Commit: 61af05fe82c6989351c08de8d9eac4dc51f4ef79
      https://github.com/llvm/llvm-project/commit/61af05fe82c6989351c08de8d9eac4dc51f4ef79
  Author: Eugene Epshteyn <eepshteyn at nvidia.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M flang-rt/include/flang-rt/runtime/environment.h
    M flang-rt/lib/runtime/command.cpp
    M flang-rt/lib/runtime/environment.cpp
    M flang/docs/Intrinsics.md
    M flang/include/flang/Optimizer/Builder/IntrinsicCall.h
    M flang/include/flang/Optimizer/Builder/Runtime/Command.h
    M flang/include/flang/Runtime/command.h
    M flang/lib/Evaluate/intrinsics.cpp
    M flang/lib/Optimizer/Builder/IntrinsicCall.cpp
    M flang/lib/Optimizer/Builder/Runtime/Command.cpp
    A flang/test/Lower/Intrinsics/putenv-func.f90
    A flang/test/Lower/Intrinsics/putenv-sub.f90
    A flang/test/Semantics/putenv.f90

  Log Message:
  -----------
  [flang] Add runtime and lowering implementation for extended intrinsic PUTENV (#134412)

Implement extended intrinsic PUTENV, both function and subroutine forms.
Add PUTENV documentation to flang/docs/Intrinsics.md. Add functional and
semantic unit tests.

  Commit: d341b632a1a07362dfb51f916baeedcbc8945e0f
      https://github.com/llvm/llvm-project/commit/d341b632a1a07362dfb51f916baeedcbc8945e0f
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp

  Log Message:
  -----------
  [RISCV] Remove unused function declaration. NFC

  Commit: 12cf6d3b9e0b4983d609576b15dc37ceb7d1d8d7
      https://github.com/llvm/llvm-project/commit/12cf6d3b9e0b4983d609576b15dc37ceb7d1d8d7
  Author: Jonas Devlieghere <jonas at devlieghere.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M lldb/include/lldb/Utility/LLDBAssert.h

  Log Message:
  -----------
  [lldb] Fix missing semicolon in lldbassert macro

  Commit: bbaf0877fa61ea5cadc6ded794c3184081790c66
      https://github.com/llvm/llvm-project/commit/bbaf0877fa61ea5cadc6ded794c3184081790c66
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVInstPrinter.cpp

  Log Message:
  -----------
  [RISCV] Assert on all invalid inputs to getStackAdjBase and printRegList. NFC

  Commit: 428fc2c8875eca42b4803fe100791270ec971e4d
      https://github.com/llvm/llvm-project/commit/428fc2c8875eca42b4803fe100791270ec971e4d
  Author: Finn Plummer <canadienfinn at gmail.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M clang/include/clang/Lex/LexHLSLRootSignature.h
    M clang/include/clang/Parse/ParseHLSLRootSignature.h
    M clang/lib/Lex/LexHLSLRootSignature.cpp
    M clang/lib/Parse/ParseHLSLRootSignature.cpp
    M clang/unittests/Lex/LexHLSLRootSignatureTest.cpp

  Log Message:
  -----------
  [NFC][HLSL][RootSignature] Make the Lexer adhere to naming conventions (#134136)

- when developing the RootSignatureLexer library, we are creating new
files so we should set the standard to adhere to the coding conventions
for function naming
- this was missed in the initial review but caught in the review of the
parser pr
[here](https://github.com/llvm/llvm-project/pull/133302#discussion_r2017632092)

Co-authored-by: Finn Plummer <finnplummer at microsoft.com>

  Commit: 24dfcc0c024f9ab8ba61c0994513f57e882961fc
      https://github.com/llvm/llvm-project/commit/24dfcc0c024f9ab8ba61c0994513f57e882961fc
  Author: Valentin Clement (バレンタイン クレメン) <clementval at gmail.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M flang/include/flang/Optimizer/Builder/IntrinsicCall.h
    M flang/lib/Optimizer/Builder/IntrinsicCall.cpp
    M flang/test/Lower/CUDA/cuda-device-proc.cuf

  Log Message:
  -----------
  [flang][cuda] Use the nvvm.vote.sync op for all and any (#134433)

NVVM operations are now available for all and any as well. Use the op
and clean up the generation function to handle all the 3 vote sync
kinds.

  Commit: 19e0233eb844e653a3108de411366bd0165cf3ec
      https://github.com/llvm/llvm-project/commit/19e0233eb844e653a3108de411366bd0165cf3ec
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp

  Log Message:
  -----------
  [RISCV] Make decodeXqccmpRlistS0 defer to decodeZcmpRlist after checking for S0 being included. NFC

This reduces code duplication.

  Commit: 18ff8df9583743f4e4ac2a74e55a28e35df958fb
      https://github.com/llvm/llvm-project/commit/18ff8df9583743f4e4ac2a74e55a28e35df958fb
  Author: Valentin Clement (バレンタイン クレメン) <clementval at gmail.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M flang/lib/Optimizer/Transforms/CUFAddConstructor.cpp
    M flang/test/Fir/CUDA/cuda-constructor-2.f90

  Log Message:
  -----------
  [flang][cuda] Register managed variables with double descriptor (#134444)

Allocatable or pointer module variables with the CUDA managed attribute
are defined with a double descriptor. One on the host and one on the
device. Only the data pointed to by the descriptor will be allocated in
managed memory.
Allow the registration of any allocatable or pointer module variables
like device or constant.

  Commit: 412f7fa31607489dc400321968a70e114463b374
      https://github.com/llvm/llvm-project/commit/412f7fa31607489dc400321968a70e114463b374
  Author: Jorge Gorbe Moya <jgorbe at google.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticIDs.h

  Log Message:
  -----------
  [clang] Bump DIAG_SIZE_PARSE as we're hitting the limit downstream as of 6263de90df7f58c8b98475024d5eef102e10a372.

  Commit: ad39049ec48edcb2ad4024c80f1cadfc9f0e4cb0
      https://github.com/llvm/llvm-project/commit/ad39049ec48edcb2ad4024c80f1cadfc9f0e4cb0
  Author: Alex MacLean <amaclean at nvidia.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AMDGPU/rotate-add.ll
    M llvm/test/CodeGen/ARM/rotate-add.ll
    M llvm/test/CodeGen/NVPTX/rotate-add.ll
    M llvm/test/CodeGen/X86/rotate-add.ll

  Log Message:
  -----------
  [DAGCombiner] Attempt to fold 'add' nodes to funnel-shift or rotate (#125612)

Almost all of the rotate idioms that are valid for an 'or' are also
valid when the halves are combined with an 'add'. Further, many of these
cases are not handled by common bits tracking meaning that the 'add' is
not converted to a 'disjoint or'.

  Commit: 64b060f129fc580cb3a9dce8b4456d496e6cdcd6
      https://github.com/llvm/llvm-project/commit/64b060f129fc580cb3a9dce8b4456d496e6cdcd6
  Author: Jerry-Ge <jerry.ge at arm.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M mlir/docs/Dialects/TOSA.md
    M mlir/include/mlir/Dialect/Tosa/IR/TosaOpBase.td
    M mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td
    M mlir/lib/Dialect/Tosa/IR/TosaOps.cpp

  Log Message:
  -----------
  [mlir][tosa] Update URLs to TOSA specification (#134449)

- The existing URLs are no longer valid, updated to the current one

Signed-off-by: Jerry Ge <jerry.ge at arm.com>

  Commit: e3369a8dc9130ef261a092d866e8ba4f8242aa26
      https://github.com/llvm/llvm-project/commit/e3369a8dc9130ef261a092d866e8ba4f8242aa26
  Author: Ashley Coleman <ascoleman at microsoft.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/include/llvm/Analysis/DXILResource.h
    M llvm/include/llvm/InitializePasses.h
    M llvm/include/llvm/LinkAllPasses.h
    M llvm/lib/Analysis/Analysis.cpp
    M llvm/lib/Analysis/DXILResource.cpp
    M llvm/lib/Passes/PassRegistry.def
    M llvm/lib/Target/DirectX/DXContainerGlobals.cpp
    M llvm/lib/Target/DirectX/DXILOpLowering.cpp
    M llvm/lib/Target/DirectX/DXILPrepare.cpp
    M llvm/lib/Target/DirectX/DXILPrettyPrinter.cpp
    M llvm/lib/Target/DirectX/DXILTranslateMetadata.cpp
    M llvm/test/Analysis/DXILResource/buffer-frombinding.ll
    M llvm/unittests/Analysis/DXILResourceTest.cpp
    M llvm/unittests/Target/DirectX/UniqueResourceFromUseTests.cpp

  Log Message:
  -----------
  [NFC][HLSL] Rename ResourceBinding Types (#134165)

Non-functional change as first step in
https://github.com/llvm/wg-hlsl/pull/207

Removes `Binding` from "Resource Instance" types

  Commit: bdff739c7e79933aa7b3233da1bdadceeb7e03e6
      https://github.com/llvm/llvm-project/commit/bdff739c7e79933aa7b3233da1bdadceeb7e03e6
  Author: Austin Schuh <AustinSchuh at users.noreply.github.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    A clang/test/CodeGen/include/cuda.h
    M clang/test/CodeGen/nvptx-surface.cu
    M clang/test/Headers/Inputs/include/cuda.h

  Log Message:
  -----------
  cuda clang: Clean up test dependency for CUDA surfaces (#134459)

https://github.com/llvm/llvm-project/pull/132883 added support for cuda
surfaces but reached into clang/test/Headers/ from clang/test/CodeGen/
to grab the minimal cuda.h. Duplicate that file instead based on
comments in the review, to fix remote test runs.

Signed-off-by: Austin Schuh <austin.linux at gmail.com>

  Commit: b0d0636026cdd2d1088d60c169a7a3a3371c0e66
      https://github.com/llvm/llvm-project/commit/b0d0636026cdd2d1088d60c169a7a3a3371c0e66
  Author: Andy Kaylor <akaylor at nvidia.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M clang/include/clang/CIR/Dialect/Builder/CIRBaseBuilder.h
    M clang/include/clang/CIR/Dialect/IR/CIROps.td
    M clang/include/clang/CIR/MissingFeatures.h
    M clang/lib/CIR/CodeGen/CIRGenFunction.h
    M clang/lib/CIR/CodeGen/CIRGenStmt.cpp
    M clang/lib/CIR/Dialect/IR/CIRDialect.cpp
    M clang/lib/CIR/Dialect/Transforms/FlattenCFG.cpp
    M clang/test/CIR/CodeGen/loop.cpp

  Log Message:
  -----------
  [CIR] Upstream support for break and continue statements (#134181)

This adds ClangIR support for break and continue statements in loops.

Because only loops are currently implemented upstream in CIR, only
breaks in loops are supported here, but this same code will work (with
minor changes to the verification and cfg flattening) when switch
statements are upstreamed.

  Commit: 6f34d03b3132a8286630f8496aa7dce9605e677b
      https://github.com/llvm/llvm-project/commit/6f34d03b3132a8286630f8496aa7dce9605e677b
  Author: Un1q32 <joey.t.reinhart at gmail.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/ARM/ARMSubtarget.cpp
    M llvm/test/CodeGen/ARM/2010-11-29-PrologueBug.ll
    M llvm/test/CodeGen/ARM/ldm.ll
    M llvm/test/CodeGen/ARM/zextload_demandedbits.ll

  Log Message:
  -----------
  Remove iOS 5 check for tailcalls on ARM (#133354)

Fixes #102053

The check was added in 8decdc472f308b13d7fb7fd50c3919db086c0417, and at
the time iOS 5 was the latest iOS version, before that commit tail calls
were disabled for all ARMv7 targets. Testing a build of wasm3 with the
patch on a device running iOS 3.0 shows a noticeable performance
improvement and no issues.

  Commit: 5271dead61dca30f4a6db0f0df8da00f8987449e
      https://github.com/llvm/llvm-project/commit/5271dead61dca30f4a6db0f0df8da00f8987449e
  Author: Jonas Devlieghere <jonas at devlieghere.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M lldb/include/lldb/Symbol/ObjectFile.h
    M lldb/include/lldb/Symbol/SymbolFile.h
    M lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
    M lldb/source/Symbol/ObjectFile.cpp
    M lldb/source/Symbol/SymbolFile.cpp

  Log Message:
  -----------
  [lldb] Add a {ObjectFile,SymbolFile}::GetObjectName method (#133370)

Add ObjectFile::GetObjectName and SymbolFile::GetObjectName to retrieve
the name of the object file, including the `.a` for static libraries.

We currently do something similar in CommandObjectTarget, but the code
for dumping this is a lot more involved than what's being offered by the
new method. We have options to print he full path, the base name, and
the directoy of the path and trim it to a specific width. 

This is motivated by #133211, where Greg pointed out that the old code
would print the static archive (the .a file) rather than the actual
object file inside of it.

  Commit: 74a78028932f5e26c93dc6fd7efab65b97e6824c
      https://github.com/llvm/llvm-project/commit/74a78028932f5e26c93dc6fd7efab65b97e6824c
  Author: alx32 <103613512+alx32 at users.noreply.github.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M lld/MachO/OutputSegment.cpp
    M lld/test/MachO/arm64-objc-stubs.s

  Log Message:
  -----------
  [lld-macho] Fix code section ordering in output binary (#134010)

In `OutputSegment.cpp`, we need to ensure a specific order for certain
sections. The current sorting logic incorrectly prioritizes code
sections over explicitly defined section orders. This is problematic
because the `__objc_stubs` section is both a code section *and* has a
specific ordering requirement. The current logic would incorrectly
prioritize its code section status, causing it to be sorted *before* the
`__stubs` section. This incorrect ordering breaks the branch extension
algorithm, ultimately leading to linker failures due to relocation
errors.

We also modify the `lld/test/MachO/arm64-objc-stubs.s` test to ensure
correct section ordering.

  Commit: 7001993880066a40783b960aa3f236a57d09e061
      https://github.com/llvm/llvm-project/commit/7001993880066a40783b960aa3f236a57d09e061
  Author: Slava Zakharin <szakharin at nvidia.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M flang/include/flang/Common/enum-class.h

  Log Message:
  -----------
  [flang] Temporary include variant.h in enum-class.h. (#134460)

I am having problems building Fortran runtime for CUDA
after #134164. I need more time to investigate it,
but in the meantime including variant.h (or any header
that eventually includes a libcudacxx header) resolves
the issue.

  Commit: e8b52acca2376aac90ba8e2927e52ddd5253bcbb
      https://github.com/llvm/llvm-project/commit/e8b52acca2376aac90ba8e2927e52ddd5253bcbb
  Author: Michael Jones <michaelrj at google.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M libc/src/sys/time/linux/utimes.cpp
    M libc/test/src/time/ctime_test.cpp

  Log Message:
  -----------
  [libc][NFC] replace NULL with nullptr (#134464)

Simple cleanup

  Commit: 78905ce6cbd3fa8f8b467e7cad0e9a093c1b1c44
      https://github.com/llvm/llvm-project/commit/78905ce6cbd3fa8f8b467e7cad0e9a093c1b1c44
  Author: Andy Kaylor <akaylor at nvidia.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M clang/include/clang/CIR/Dialect/Builder/CIRBaseBuilder.h
    M clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
    M clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
    M clang/test/CIR/CodeGen/unary.cpp

  Log Message:
  -----------
  [CIR] Upstream support for logical not operations (#133966)

When unary operation support was initially upstreamed, the cir.cast
operation hadn't been upstreamed yet, so logical not wasn't included.
Since casts have now been added, this change adds support for logical
not.

  Commit: 6272e1f37e0710b51d38cb98b905a3f2ffea7966
      https://github.com/llvm/llvm-project/commit/6272e1f37e0710b51d38cb98b905a3f2ffea7966
  Author: Felipe de Azevedo Piovezan <fpiovezan at apple.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M lldb/source/Plugins/Process/Utility/RegisterContextThreadMemory.cpp
    M lldb/source/Plugins/Process/Utility/RegisterContextThreadMemory.h

  Log Message:
  -----------
  [lldb] Make `RegisterContextThreadMemory` thread safe (#134469)

The UpdateRegisterContext method can be called from multiple threads.

  Commit: 1f72fa29ecb4b283f449c8bf931fcaf0fa1069ee
      https://github.com/llvm/llvm-project/commit/1f72fa29ecb4b283f449c8bf931fcaf0fa1069ee
  Author: weiwei chen <weiwei.chen at modular.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/M68k/M68kMCInstLower.cpp
    M llvm/lib/Target/X86/X86MCInstLower.cpp
    M llvm/unittests/CodeGen/CMakeLists.txt
    A llvm/unittests/CodeGen/X86MCInstLowerTest.cpp

  Log Message:
  -----------
  [X86Backend][M68KBackend] Make Ctx in X86MCInstLower (M68KInstLower) the same as AsmPrinter.OutContext  (#133352)

In `X86MCInstLower::LowerMachineOperand`, a new `MCSymbol` can be
created in `GetSymbolFromOperand(MO)` where `MO.getType()` is
`MachineOperand::MO_ExternalSymbol`
```
  case MachineOperand::MO_ExternalSymbol:
    return LowerSymbolOperand(MO, GetSymbolFromOperand(MO));
```
at
https://github.com/llvm/llvm-project/blob/725a7b664b92cd2e884806de5a08900b43d43cce/llvm/lib/Target/X86/X86MCInstLower.cpp#L196

However, this newly created symbol will not be marked properly with its
`IsExternal` field since `Ctx.getOrCreateSymbol(Name)` doesn't know if
the newly created `MCSymbol` is for `MachineOperand::MO_ExternalSymbol`.

Looking at other backends, for example `Arch64MCInstLower` is doing for
handling `MC_ExternalSymbol`

https://github.com/llvm/llvm-project/blob/14c36db16fc090ef494ff6d8207562c414b40e30/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp#L366-L367

https://github.com/llvm/llvm-project/blob/14c36db16fc090ef494ff6d8207562c414b40e30/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp#L145-L148

It creates/gets the MCSymbol from `AsmPrinter.OutContext` instead of
from `Ctx`. Moreover, `Ctx` for `AArch64MCLower` is the same as
`AsmPrinter.OutContext`.
https://github.com/llvm/llvm-project/blob/8e7d6baf0e013408be932758b4a5334c14a34086/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp#L100.
This applies to almost all the other backends except X86 and M68k.

```
$git grep "MCInstLowering("
lib/Target/AArch64/AArch64AsmPrinter.cpp:100:      : AsmPrinter(TM, std::move(Streamer)), MCInstLowering(OutContext, *this),
lib/Target/AMDGPU/AMDGPUMCInstLower.cpp:223:  AMDGPUMCInstLower MCInstLowering(OutContext, STI, *this);
lib/Target/AMDGPU/AMDGPUMCInstLower.cpp:257:  AMDGPUMCInstLower MCInstLowering(OutContext, STI, *this);
lib/Target/AMDGPU/R600MCInstLower.cpp:52:  R600MCInstLower MCInstLowering(OutContext, STI, *this);
lib/Target/ARC/ARCAsmPrinter.cpp:41:        MCInstLowering(&OutContext, *this) {}
lib/Target/AVR/AVRAsmPrinter.cpp:196:  AVRMCInstLower MCInstLowering(OutContext, *this);
lib/Target/BPF/BPFAsmPrinter.cpp:144:    BPFMCInstLower MCInstLowering(OutContext, *this);
lib/Target/CSKY/CSKYAsmPrinter.cpp:41:    : AsmPrinter(TM, std::move(Streamer)), MCInstLowering(OutContext, *this) {}
lib/Target/Lanai/LanaiAsmPrinter.cpp:147:  LanaiMCInstLower MCInstLowering(OutContext, *this);
lib/Target/Lanai/LanaiAsmPrinter.cpp:184:  LanaiMCInstLower MCInstLowering(OutContext, *this);
lib/Target/MSP430/MSP430AsmPrinter.cpp:149:  MSP430MCInstLower MCInstLowering(OutContext, *this);
lib/Target/Mips/MipsAsmPrinter.h:126:      : AsmPrinter(TM, std::move(Streamer)), MCInstLowering(*this) {}
lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp:695:    WebAssemblyMCInstLower MCInstLowering(OutContext, *this);
lib/Target/X86/X86MCInstLower.cpp:2200:  X86MCInstLower MCInstLowering(*MF, *this);
```

This patch makes `X86MCInstLower` and `M68KInstLower` to have their
`Ctx` from `AsmPrinter.OutContext` instead of getting it from
`MF.getContext()` to be consistent with all the other backends.

I think since normal use case (probably anything other than our
un-conventional case) only handles one llvm module all the way through
in the codegen pipeline till the end of code emission (AsmPrint),
`AsmPrinter.OutContext` is the same as MachineFunction's MCContext, so
this change is an NFC.

----

This fixes an error while running the generated code in ORC JIT for our
use case with
[MCLinker](https://youtu.be/yuSBEXkjfEA?si=HjgjkxJ9hLfnSvBj&t=813) (see
more details below):
https://github.com/llvm/llvm-project/pull/133291#issuecomment-2759200983

We (Mojo) are trying to do a MC level linking so that we break llvm
module into multiple submodules to compile and codegen in parallel
(technically into *.o files with symbol linkage type change), but
instead of archive all of them into one `.a` file, we want to fix the
symbol linkage type and still produce one *.o file. The parallel codegen
pipeline generates the codegen data structures in their own `MCContext`
(which is `Ctx` here). So if function `f` and `g` got split into
different submodules, they will have different `Ctx`. And when we try to
create an external symbol with the same name for each of them with
`Ctx.getOrCreate(SymName)`, we will get two different `MCSymbol*`
because `f` and `g`'s `MCContext` are different and they can't see each
other. This is unfortunately not what we want for external symbols.
Using `AsmPrinter.OutContext` helps, since it is shared, if we try to
get or create the `MCSymbol` there, we'll be able to deduplicate.

  Commit: d59594d697c4b1f0f44a4e9ee296543a88575178
      https://github.com/llvm/llvm-project/commit/d59594d697c4b1f0f44a4e9ee296543a88575178
  Author: Sudharsan Veeravalli <quic_svs at quicinc.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfoXqci.td
    A llvm/test/MC/RISCV/xqcibi-long-conditional-jump.s
    M llvm/test/MC/RISCV/xqcibi-relocations.s

  Log Message:
  -----------
  [RISCV] Relax out of range Xqcibi conditional branches (#134336)

If .L1 is not within +-4KiB range,

convert

qc.(e.)bge a0, 10, .L1

to

qc.(e.)blt a0, 10, 8(10)
j   .L1

This is similar to what is done for the RISCV conditional branches.

  Commit: 71884b63a413c7803fce8ec7bf2857938765f4e2
      https://github.com/llvm/llvm-project/commit/71884b63a413c7803fce8ec7bf2857938765f4e2
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
    M llvm/include/llvm/MC/MCAsmInfo.h
    M llvm/include/llvm/MC/MCExpr.h
    M llvm/lib/Target/AArch64/AArch64MCInstLower.cpp
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.cpp
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.h
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/lib/Target/AArch64/Disassembler/AArch64ExternalSymbolizer.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCExpr.h
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64MachObjectWriter.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64WinCOFFObjectWriter.cpp
    M llvm/test/MC/AArch64/coff-relocations.s
    M llvm/test/MC/AArch64/data-directive-specifier.s

  Log Message:
  -----------
  [AArch64] Transition from MCSymbolRefExpr::VariantKind constants

Shift ELF `@plt` and `@gotpcrel` references in data directives, as well as
Mach-O `@specifier` notations, to use `AArch64MCExpr::Specifier` constants.
This is a follow-up to #132595. COFF-specific specifiers are not moved
yet.

In addition, partition @-specifiers into COFF, ELF, and Mach-O, so that
mix-and-match is rejected at parse time.

ELF and Mach-O specifiers are distinct, with `None` being the only
shared value. For Mach-O-specific specifiers, we adopt the `M_xxx` naming
convention.

Pull Request: https://github.com/llvm/llvm-project/pull/133214

  Commit: 1d7bd3bc5c4f085dfa4443ea3fbab46356ab0a8e
      https://github.com/llvm/llvm-project/commit/1d7bd3bc5c4f085dfa4443ea3fbab46356ab0a8e
  Author: jobhdez <lara2993 at proton.me>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M libc/src/math/generic/sin.cpp

  Log Message:
  -----------
  [libc] Remove extra parenthesis in sin.cpp comments (#134477)

  Commit: b6a96183015e99ec554f7a6b8c35a0e679b8ba39
      https://github.com/llvm/llvm-project/commit/b6a96183015e99ec554f7a6b8c35a0e679b8ba39
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCParser/AsmLexer.h
    M llvm/lib/MC/MCParser/AsmParser.cpp
    M llvm/lib/MC/MCParser/MasmParser.cpp
    M llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp

  Log Message:
  -----------
  [MCParser] Rename confusing variable names

https://reviews.llvm.org/D24047 added `IsAtStartOfStatement` to
MCAsmLexer, while its subclass AsmLexer had a variable of the same name.
The assignment in `UnLex` is unnecessary, which is now removed.

60b403e75cd25a0c76aaaf4e6b176923acf49443 (2019) named the result
`parseStatement` `Parsed`. `HasError` is a clearer name.

  Commit: a07b37475ccbf6b718fdf64fd6f0756ea1958852
      https://github.com/llvm/llvm-project/commit/a07b37475ccbf6b718fdf64fd6f0756ea1958852
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchMCExpr.cpp

  Log Message:
  -----------
  [LoongArch] Simplify evaluateAsRelocatableImpl

Similar to RISCV

  Commit: f47034cbe5c02b748742c733cf453b3b907687e5
      https://github.com/llvm/llvm-project/commit/f47034cbe5c02b748742c733cf453b3b907687e5
  Author: Changpeng Fang <changpeng.fang at amd.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/VOP3Instructions.td
    M llvm/test/CodeGen/AMDGPU/bf16-conversions.ll

  Log Message:
  -----------
  AMDGPU: Add round-to-odd rounding during f64 to bf16 conversion (#133995)

f64 -> bf16 conversion can be lowered to f64 -> f32 followed by f32 ->
bf16:
   v_cvt_f32_f64_e32 v0, v[0:1]
   v_cvt_pk_bf16_f32 v0, v0, s0
Both conversion instructions will do round-to-even rounding, and thus we
will have double rounding issue which may generate incorrect result in
some data range. We need to add round-to-odd rounding during f64 -> f32
to avoid double rounding,.

NOTE: we are having the same issue with f64 -> f16 conversion. Will add
round-to-odd rounding for it in a separate patch, which fixes
SWDEV-523856

---------

Co-authored-by: Matt Arsenault <arsenm2 at gmail.com>

  Commit: a1935fd3809772c06f9a09fa151181642ae92b20
      https://github.com/llvm/llvm-project/commit/a1935fd3809772c06f9a09fa151181642ae92b20
  Author: Reid Kleckner <rnk at google.com>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M clang/lib/Basic/SourceManager.cpp

  Log Message:
  -----------
  [clang] Remove unused SourceManager.cpp includes, NFC (trying out clangd)

  Commit: f3e6473df46fd920e09e06e57a5549eb8e3a8bd3
      https://github.com/llvm/llvm-project/commit/f3e6473df46fd920e09e06e57a5549eb8e3a8bd3
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-04 (Fri, 04 Apr 2025)

  Changed paths:
    M llvm/lib/MC/MCAssembler.cpp
    M llvm/lib/MC/MCValue.cpp
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.cpp
    M llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp

  Log Message:
  -----------
  MCValue: reduce getSymB uses

The MCValue::SymB MCSymbolRefExpr member might be replaced with a
MCSymbol in the future. Reduce direct access.

  Commit: 44923d8631fb28b4de54d4210762f256c3894cef
      https://github.com/llvm/llvm-project/commit/44923d8631fb28b4de54d4210762f256c3894cef
  Author: Aiden Grossman <aidengrossman at google.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M .github/workflows/containers/github-action-ci-windows/Dockerfile
    M .github/workflows/containers/github-action-ci/Dockerfile

  Log Message:
  -----------
  [Github] Bump Github Runner Version in Agent Containers

The Github runner version got bumped recently and it would be good to keep
this up to date. Also debugging an issue where Github ARC is failing to
create new pods and trying to see if it might be related to outdated
versions.

  Commit: fb96d5171ee4cba7b2cb9cceea755aa4bd51b3c4
      https://github.com/llvm/llvm-project/commit/fb96d5171ee4cba7b2cb9cceea755aa4bd51b3c4
  Author: Aiden Grossman <aidengrossman at google.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M .ci/monolithic-linux.sh

  Log Message:
  -----------
  Reapply "[CI] Fix Monolithic Linux Build in Ubuntu 24.04 (#133628)"

This reverts commit d72be157823d41e7eaf457cc37ea99c07431a25c.

Now that the container version got bumped, we need to reland this.

  Commit: 70a20757e8fff0a56cd7f95c2854b0fa68e7089c
      https://github.com/llvm/llvm-project/commit/70a20757e8fff0a56cd7f95c2854b0fa68e7089c
  Author: Vlad Serebrennikov <serebrennikov.vladislav at gmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M clang/www/cxx_dr_status.html

  Log Message:
  -----------
  [clang] Update C++ DR status page

  Commit: a64191053136078761a72fe800feedb8bcc70d31
      https://github.com/llvm/llvm-project/commit/a64191053136078761a72fe800feedb8bcc70d31
  Author: Mats Jun Larsen <mats at jun.codes>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M clang/lib/CodeGen/CGObjCMac.cpp

  Log Message:
  -----------
  [clang][CGObjC] Remove unused ExternalProtocolPtrTy (NFC) (#133870)

This function was previously used to get a type to the protocol that
was used to bitcast the initializer of GenerateProtocol. This bitcast
has later been removed (thanks to opaque pointers), but the member was
left behind.

History:

- 020de3254acc3 used ExternalProtocolPtrTy
- 34ee69b4ce662 removes the bitcast

Also technically part of #123569

  Commit: 75bbf768a4ae3d9f6cd45ab7448acf3792d94d82
      https://github.com/llvm/llvm-project/commit/75bbf768a4ae3d9f6cd45ab7448acf3792d94d82
  Author: David CARLIER <devnexen at gmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
    M compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp

  Log Message:
  -----------
  [compiler-rt][rtsan] Linux's eventfd interception. (#132836)

  Commit: 6c9e098b397fa8802b701a3a4ac827476b33568e
      https://github.com/llvm/llvm-project/commit/6c9e098b397fa8802b701a3a4ac827476b33568e
  Author: David CARLIER <devnexen at gmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
    M compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp

  Log Message:
  -----------
  [compiler-rt][rtsan] symlink/symlinkat interception. (#134168)

  Commit: 008e3a0b3d08a863f777d67e067eed75f0c08402
      https://github.com/llvm/llvm-project/commit/008e3a0b3d08a863f777d67e067eed75f0c08402
  Author: Andreas Jonson <andjo403 at hotmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/test/Transforms/InstCombine/assume.ll

  Log Message:
  -----------
  [ValueTracking] Test for trunc nuw cond in assume. (NFC)

  Commit: 16573315d986568641e536c37c84fcc5dd161bf6
      https://github.com/llvm/llvm-project/commit/16573315d986568641e536c37c84fcc5dd161bf6
  Author: Andreas Jonson <andjo403 at hotmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/test/Transforms/InstCombine/and-or-icmps.ll

  Log Message:
  -----------
  [InstCombine] Test for fold of and of icmps with operands in the range(0,2)  (NFC)

proof https://alive2.llvm.org/ce/z/xeazCu

this is a regression found in https://github.com/llvm/llvm-project/pull/128861
This fold is done when icmp eq/ne x, 1/0 is folded to trunc nuw x iff x is in the range(0,2)

  Commit: cd54cb062bba9c90a8f3723bf66caa7effbcf259
      https://github.com/llvm/llvm-project/commit/cd54cb062bba9c90a8f3723bf66caa7effbcf259
  Author: Phoebe Wang <phoebe.wang at intel.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M clang/lib/Headers/amxcomplexintrin.h

  Log Message:
  -----------
  [X86][AMX] Add missing __inline__ for AMXCOMPLEX intrinsics, NFCI (#134484)

Found by #64779.

  Commit: 13799998c06984f808ff687e7866441a3135fd18
      https://github.com/llvm/llvm-project/commit/13799998c06984f808ff687e7866441a3135fd18
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/ADT/EquivalenceClasses.h
    M llvm/lib/Transforms/Vectorize/VectorCombine.cpp
    M llvm/unittests/ADT/EquivalenceClassesTest.cpp
    M mlir/include/mlir/Dialect/Bufferization/Transforms/OneShotAnalysis.h

  Log Message:
  -----------
  [EquivalenceClasses] Use DenseMap instead of std::set. (NFC) (#134264)

Replace the std::set with DenseMap, which removes the requirement for an
ordering predicate. This also requires to allocate the ECValue objects
separately. This patch uses a BumpPtrAllocator.

Follow-up to https://github.com/llvm/llvm-project/pull/134075.

Compile-time impact is mostly neutral or slightly positive:

https://llvm-compile-time-tracker.com/compare.php?from=ee4e8197fa67dd1ed6e9470e00708e7feeaacd97&to=242e6a8e42889eebfc0bb5d433a4de7dd9e224a7&stat=instructions:u

  Commit: 475cbf0ad6e72f33e5ba5890a1c6e84e39a19e83
      https://github.com/llvm/llvm-project/commit/475cbf0ad6e72f33e5ba5890a1c6e84e39a19e83
  Author: James E T Smith <jamesETsmith at users.noreply.github.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M libcxx/docs/FeatureTestMacroTable.rst
    M libcxx/docs/Status/Cxx23.rst
    M libcxx/docs/Status/Cxx23Papers.csv
    M libcxx/include/CMakeLists.txt
    A libcxx/include/__algorithm/out_value_result.h
    A libcxx/include/__numeric/ranges_iota.h
    M libcxx/include/algorithm
    M libcxx/include/module.modulemap
    M libcxx/include/numeric
    M libcxx/include/version
    M libcxx/modules/std/algorithm.inc
    M libcxx/modules/std/numeric.inc
    M libcxx/test/std/algorithms/algorithms.results/no_unique_address.compile.pass.cpp
    A libcxx/test/std/algorithms/algorithms.results/out_value_result.pass.cpp
    M libcxx/test/std/algorithms/ranges_result_alias_declarations.compile.pass.cpp
    M libcxx/test/std/algorithms/ranges_robust_against_dangling.pass.cpp
    M libcxx/test/std/algorithms/ranges_robust_against_proxy_iterators.pass.cpp
    M libcxx/test/std/language.support/support.limits/support.limits.general/numeric.version.compile.pass.cpp
    M libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp
    A libcxx/test/std/numerics/numeric.ops/numeric.iota/ranges.iota.pass.cpp
    M libcxx/test/support/test_iterators.h
    M libcxx/utils/generate_feature_test_macro_components.py

  Log Message:
  -----------
  [libc++] Implement ranges::iota (#68494)

# Overview

As a disclaimer, this is my first PR to LLVM and while I've tried to
ensure I've followed the LLVM and libc++ contributing guidelines,
there's probably a good chance I missed something. If I have, just let
me know and I'll try to correct it as soon as I can.

This PR implements `std::ranges::iota` and
`std::ranges::out_value_result` outlined in
[P2440r1](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2440r1.html).

As outlined in the paper above, I've:
- Implemented `out_value_result` and added to `<algorithm>`
- Added `out_value_result`, `iota_result`, and two overloads of `iota`
to `std::ranges` in `<numeric>`
- Updated the version macro `__cpp_lib_ranges_iota` in `<version>`

I've also added tests for `ranges::iota` and `ranges::out_value_result`.
Lastly, I added those structs to the appropriate module files.

Partially implements #105184

EDIT: Forgot to mention in the original post, thanks to @hawkinsw for
taking a look at a preliminary version of this PR!

# TODOs
- [x] Updating the range [status
doc](https://github.com/jamesETsmith/llvm-project/blob/main/libcxx/docs/Status/RangesMajorFeatures.csv)
- [x] Ensure all comments from https://reviews.llvm.org/D121436 are
addressed here
- [X] EDIT (I'll do this in a separate PR). ~~I'm open to implementing
the rest of P2440r1 (`ranges::shift_left` and `ranges::shift_right`) if
that's ok, I just wanted to get feedback on `ranges::iota` first~~
- [x] I've been having trouble building the modules locally and want to
make sure that's working properly

Closes: #134060

  Commit: 68ce637872a2e1a1dedbb9caa6eacf15ec5c7b99
      https://github.com/llvm/llvm-project/commit/68ce637872a2e1a1dedbb9caa6eacf15ec5c7b99
  Author: Matthias Springer <me at m-sp.org>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M mlir/lib/Transforms/Utils/DialectConversion.cpp

  Log Message:
  -----------
  [mlir][Transforms][NFC] Dialect Conversion: Replace after legalizing constants (#134384)

When folding an op during a conversion, first try to legalize all
generated constants, then replace the original operation. This is
slightly more efficient because fewer rewrites must be rolled back in
case a generated constant could not be legalized.

Note: This is in preparation of the One-Shot Dialect Conversion
refactoring.

  Commit: fcead25550bb727215919ecf2dfad17765223c19
      https://github.com/llvm/llvm-project/commit/fcead25550bb727215919ecf2dfad17765223c19
  Author: Martin Storsjö <martin at martin.st>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M lldb/include/lldb/Utility/LLDBAssert.h

  Log Message:
  -----------
  [lldb] Fix building with GCC without asserts

This case was missed in 03604a784011bec2292f900b118d825f34f8cf89.

  Commit: 13faa819168e568404bee320ca7db9bc386f081f
      https://github.com/llvm/llvm-project/commit/13faa819168e568404bee320ca7db9bc386f081f
  Author: Antonio Frighetto <me at antoniofrighetto.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/CodeGen/TypePromotion.cpp
    A llvm/test/CodeGen/AArch64/typepromotion-gep.ll
    M llvm/test/CodeGen/AArch64/typepromotion-phisret.ll
    M llvm/test/Transforms/TypePromotion/ARM/phis-ret.ll
    M llvm/test/Transforms/TypePromotion/ARM/pointers.ll

  Log Message:
  -----------
  [TypePromotion] Do not zero-extend getelementptr indexes since signed

A miscompilation issue has been addressed with improved handling.

Fixes: https://github.com/llvm/llvm-project/issues/133928.

Alive2: https://alive2.llvm.org/ce/z/gcMNvS.

  Commit: c07ab9e2ab0f288c10af172d11a3936b89b952fb
      https://github.com/llvm/llvm-project/commit/c07ab9e2ab0f288c10af172d11a3936b89b952fb
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/test/Transforms/LoopVectorize/dbg-outer-loop-vect.ll
    M llvm/test/Transforms/LoopVectorize/debugloc.ll
    M llvm/test/Transforms/LoopVectorize/if-pred-non-void.ll

  Log Message:
  -----------
  [VPlan] Set debug location for recipes in VPBB::executeRecipes.

Set the debug location for each recipe before executing the recipe,
instead of ad-hoc setting the debug location during individual recipe
execution.

This simplifies the code and ensures that all recipe repsect the
recipe's debug location. There are some minor changes, where previously
we would re-use a previously set debug location.

  Commit: 6ac5cbdd29b630259432fc5b478cd2ddf78a17cd
      https://github.com/llvm/llvm-project/commit/6ac5cbdd29b630259432fc5b478cd2ddf78a17cd
  Author: Rahul Joshi <rjoshi at nvidia.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/PassSupport.h

  Log Message:
  -----------
  [NFC][LLVM] Eliminate duplicate code in INITIALIZE_PASS macros (#134457)

- Refactor INITIALIZE_PASS and INITIALIZE_PASS_WITH_OPTIONS macros to
eliminate some code duplication.

  Commit: 33246f79e87a0e629ae776d1811a1175a3f10065
      https://github.com/llvm/llvm-project/commit/33246f79e87a0e629ae776d1811a1175a3f10065
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCExpr.h
    M llvm/include/llvm/MC/MCObjectWriter.h
    M llvm/include/llvm/MC/MCValue.h
    M llvm/lib/MC/MCAssembler.cpp
    M llvm/lib/MC/MCExpr.cpp
    M llvm/lib/MC/MCObjectWriter.cpp
    M llvm/test/MC/AArch64/elf-reloc-ptrauth.s
    M llvm/test/MC/AArch64/label-arithmetic-diags-darwin.s
    M llvm/test/MC/ELF/bad-expr.s
    M llvm/test/MC/X86/macho-reloc-errors-x86_64.s

  Log Message:
  -----------
  [MC] Rework evaluateSymbolicAdd to eliminate MCValue::SymB reliance

Reworked evaluateSymbolicAdd and isSymbolRefDifferenceFullyResolved to
remove their reliance on MCValue::SymB, which previously used the
MCSymbolRefExpr member when folding two symbolic expressions. This
dependency prevented replacing MCValue::SymB with a MCSymbol. By
refactoring, we enable this replacement, which is a more significant
improvement.

Note that this change eliminates the rare "unsupported subtraction of
qualified symbol" diagnostic, resulting in a minor loss of information.
However, the benefit of enabling MCValue::SymB replacement with MCSymbol
outweighs this slight regression.

  Commit: cadfaa83ff1f7d9f983b23a756f25884a3d6314c
      https://github.com/llvm/llvm-project/commit/cadfaa83ff1f7d9f983b23a756f25884a3d6314c
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/Target/AVR/MCTargetDesc/AVRMCExpr.cpp
    M llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCExpr.cpp

  Log Message:
  -----------
  [AVR,CSKY] Migrate away from MCValue::getSymB

The MCValue::SymB MCSymbolRefExpr member might be replaced with a
MCSymbol in the future. Reduce direct access.

  Commit: b4f7a2ab578957657336a598220fce6fc00f56b5
      https://github.com/llvm/llvm-project/commit/b4f7a2ab578957657336a598220fce6fc00f56b5
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M .github/workflows/libcxx-build-and-test.yaml
    M libcxx/test/libcxx/strings/basic.string/string.capacity/allocation_size.pass.cpp
    M libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/setbuf.pass.cpp
    M libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_double.pass.cpp
    M libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_float.pass.cpp
    M libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_double.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
    M libcxx/test/std/strings/basic.string/string.capacity/over_max_size.pass.cpp

  Log Message:
  -----------
  [libc++] Bump OS version for macOS backdeployment CI jobs (#131883)

In 0547e573c555, I introduced backdeployment testing on macOS using
Github-provided builders. This was done by basically building libc++ on
a slightly older macOS (like macOS 13) and then running against the
system library on that machine. However, that created a dependency that
libc++ must keep working on macOS 13, which doesn't support the
latest-released Xcode.

This patch solves that problem by moving the deployment testing to a
newer version of macOS which supports the latest-released version of
Xcode.

Sadly, that also reduces the backdeployment coverage we have since we're
not actually testing on older OSes, but is necessary to satisfy the
documented libc++ support policy. In the future, we could improve the
situation by providing a Lit configuration that allows compiling (but
not running) all the tests, building the tests on a supported macOS, and
then shipping those tests on an older backdeployment target in order to
run them against the system library. Since that requires significant
engineering, this isn't done at this time.

  Commit: 5e8f43811acfd72ac5da4df2a5436b27ad1eeab4
      https://github.com/llvm/llvm-project/commit/5e8f43811acfd72ac5da4df2a5436b27ad1eeab4
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCExpr.h
    M llvm/include/llvm/MC/MCValue.h
    M llvm/lib/MC/MCExpr.cpp

  Log Message:
  -----------
  MCValue: Make getSymB private and improve documentation

  Commit: ed2b82fb8b066f8c269be9e403ee20d86b5ead8a
      https://github.com/llvm/llvm-project/commit/ed2b82fb8b066f8c269be9e403ee20d86b5ead8a
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCValue.h
    M llvm/lib/MC/MCValue.cpp
    M llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyWasmObjectWriter.cpp

  Log Message:
  -----------
  MCValue: Change getAccessVariant to return uint16_t

Some targets encode the relocation specifier within SymA using
MCSymbolRefExpr::SubclassData. They will cast the specifier
to *MCExpr::Specifier.

Migrate away from the confusing MCSymbolRefExpr::VariantKind.

Note: getAccessVariant is a deprecated method to get the relocation
specifier.

  Commit: 582b1b2ac9de696debe6041aa500141c2fef5aa3
      https://github.com/llvm/llvm-project/commit/582b1b2ac9de696debe6041aa500141c2fef5aa3
  Author: Aiden Grossman <aidengrossman at google.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M .ci/monolithic-linux.sh

  Log Message:
  -----------
  [CI] Use env variable to enable pip breaking system packages

This patch uses an env variable instead of the --break-system-packages
flag. This enables the heterogenous configuration between the old and
new premerge systems as the old premerge container does not recognize
the --break-system-packages flag. An env variable will work on new
premerge and have no impact on old premerge.

  Commit: 52eb11f925ddeba4e1b3840fd636ee87387f3ada
      https://github.com/llvm/llvm-project/commit/52eb11f925ddeba4e1b3840fd636ee87387f3ada
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/include/llvm/MC/MCValue.h
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64MachObjectWriter.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64WinCOFFObjectWriter.cpp
    M llvm/lib/Target/ARM/MCTargetDesc/ARMWinCOFFObjectWriter.cpp
    M llvm/lib/Target/PowerPC/MCTargetDesc/PPCXCOFFObjectWriter.cpp
    M llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp
    M llvm/lib/Target/SystemZ/MCTargetDesc/SystemZELFObjectWriter.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86ELFObjectWriter.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp

  Log Message:
  -----------
  [MC] Replace getSpecifier(Target.getSymA()) with Target.getSymSpecifier()

Add MCValue::getSymSpecifier as a workaround for targets that encode the
relocation specifier on SymA. This function asserts that SymA is not
null.

  Commit: 2fd6f8fb5e3a52e901276d97c285b8de66742985
      https://github.com/llvm/llvm-project/commit/2fd6f8fb5e3a52e901276d97c285b8de66742985
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [LV] Don't add blocks to loop in GeneratedRTChecks (NFC).

Blocks will get added to parent loops as needed during VPlan execution.

  Commit: 7ccdc3d5ca648c09bbeb86f5063f7b0ee3e9b5e2
      https://github.com/llvm/llvm-project/commit/7ccdc3d5ca648c09bbeb86f5063f7b0ee3e9b5e2
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-04-05 (Sat, 05 Apr 2025)

  Changed paths:
    M llvm/lib/MC/ELFObjectWriter.cpp
    M llvm/lib/MC/MCAssembler.cpp
    M llvm/lib/MC/MCExpr.cpp
    M llvm/lib/MC/MachObjectWriter.cpp
    M llvm/lib/MC/XCOFFObjectWriter.cpp
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64MachObjectWriter.cpp
    M llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
    M llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
    M llvm/lib/Target/Sparc/MCTargetDesc/SparcAsmBackend.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86ELFObjectWriter.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86MachObjectWriter.cpp

  Log Message:
  -----------
  [MC] Replace getSymA()->getSymbol() with getAddSym. NFC