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release/21.x: [WIP] [clang] Align cleanup structs to prevent SIGBUS on sparc32 (#152866)

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

Status: Open (in progress).

llvm/llvm-projectnumber 154002

#154002 In llvm/llvm-project;

· llvmbot opened on Aug 17, 2025

· 

LLVM 21.x Release

[clang][OpenMP][bytecode] Assertion `!LocalDeclMap.count(VD) && "Decl already exists in LocalDeclMap!"' failed.

clang:bytecodeIssues for the clang bytecode constexpr interpreterIssues for the clang bytecode constexpr interpreter

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:openmpOpenMP related changes to ClangOpenMP related changes to Clang

crashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]

Status: Open.

Bug

#153987 In llvm/llvm-project;

· k-arrows opened on Aug 17, 2025

[Clang][CodeGen][Sanitizers] Add extra context for trap messages

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

Status: Open (in progress).

llvm/llvm-projectnumber 153845

#153845 In llvm/llvm-project;

· anthonyhatran opened on Aug 15, 2025

Add __builtin_wasm_js_catch

backend:WebAssembly

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

llvm:ir

Status: Open (in progress).

llvm/llvm-projectnumber 153767

#153767 In llvm/llvm-project;

· hoodmane opened on Aug 15, 2025

[clang][PAC][ObjC] Merge the block metadata support for the arm64e abi to llvm 21

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

Status: Open (in progress).

llvm/llvm-projectnumber 153725

#153725 In llvm/llvm-project;

· ojhunt opened on Aug 15, 2025

· 

LLVM 21.x Release

[OpenMP][wip] Rework 'containing struct'/overlapped mapping handling

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:openmpOpenMP related changes to ClangOpenMP related changes to Clang

Status: Draft (not ready).

llvm/llvm-projectnumber 153672

#153672 In llvm/llvm-project;

· jtb20 opened on Aug 14, 2025

[DebugInfo] When referencing structured bindings use the reference's location, not the binding's declaration's location

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

Status: Open (in progress).

llvm/llvm-projectnumber 153637

#153637 In llvm/llvm-project;

· dwblaikie opened on Aug 14, 2025

[AMDGPU] Extend __builtin_amdgcn_ds_bpermute argument types

backend:AMDGPU

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

llvm:ir

Status: Open (in progress).

llvm/llvm-projectnumber 153501

#153501 In llvm/llvm-project;

· yxsamliu opened on Aug 13, 2025

[clang] Crash in lambda return type involving decltype of bound argument

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

crashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]

lambdaC++11 lambda expressionsC++11 lambda expressions

regression:19Regression in 19 releaseRegression in 19 release

Status: Open.

Bug

#153493 In llvm/llvm-project;

· MR2K5 opened on Aug 13, 2025

[Coroutines] Add llvm.coro.is_in_ramp and drop return value of llvm.coro.end

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

coroutinesC++20 coroutinesC++20 coroutines

llvm:analysisIncludes value tracking, cost tables and constant foldingIncludes value tracking, cost tables and constant folding

llvm:ir

llvm:transforms

mlir

mlir:llvm

Status: Open (in progress).

llvm/llvm-projectnumber 153404

#153404 In llvm/llvm-project;

· NewSigma opened on Aug 13, 2025

[clang][WebAssembly] Handle casted function pointers with different number of arguments

backend:WebAssembly

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

Status: Open (in progress).

llvm/llvm-projectnumber 153168

#153168 In llvm/llvm-project;

· turran opened on Aug 12, 2025

[Clang] Rename HasLegalHalfType -> HasFastHalfType (NFC)

backend:AArch64

backend:AMDGPU

backend:ARM

backend:DirectX

backend:Hexagon

backend:RISC-V

backend:SystemZ

clangClang issues not falling into any other categoryClang issues not falling into any other category

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

Status: Open (in progress).

llvm/llvm-projectnumber 153163

#153163 In llvm/llvm-project;

· nikic opened on Aug 12, 2025