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[clang] Assertion `(T->hasSignedIntegerRepresentation() || T->isSignedFixedPointType()) && "Unexpected signed integer or fixed point type"' failed.

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

crash-on-invalid

regression

Status: Open.

Bug

#174331 In llvm/llvm-project;

· k-arrows opened on Jan 4, 2026

[DAG] SDPatternMatch - extend MinMax matchers to detect flippable signed/unsigned cases

good first issuehttps://github.com/llvm/llvm-project/contributehttps://github.com/llvm/llvm-project/contribute

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

Status: Open.

#174328 In llvm/llvm-project;

· RKSimon opened on Jan 4, 2026

[DAG] SDPatternMatch - add m_Negative/m_StrictlyPositive/m_NonNegative/m_NonPositive matchers

good first issuehttps://github.com/llvm/llvm-project/contributehttps://github.com/llvm/llvm-project/contribute

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

Status: Open.

#174327 In llvm/llvm-project;

· RKSimon opened on Jan 4, 2026

Request Commit Access For Flakebi

infra:commit-access-request

Status: Open.

#174326 In llvm/llvm-project;

· Flakebi opened on Jan 4, 2026

[DAG] visitIMINMAX - flip SMIN/SMAX <-> UMIN/UMAX if both the operand signbits are set

good first issuehttps://github.com/llvm/llvm-project/contributehttps://github.com/llvm/llvm-project/contribute

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

Status: Open.

#174325 In llvm/llvm-project;

· RKSimon opened on Jan 4, 2026

"Unimplemented" popup when using LLDB-DAP VSCode extension on a mixed C++ / Swift project on Windows

new issue

Status: Open.

#174324 In llvm/llvm-project;

· natinusala opened on Jan 4, 2026

mlir-opt after transform-interpreter have problem about scf.forall to scf.for

new issue

Status: Open.

#174319 In llvm/llvm-project;

· Confen opened on Jan 4, 2026

[libc++] Tricky results of <code>std::any_cast&lt;const T&amp;&gt;(ptr)</code>/<code>std::any_cast&lt;T&amp;&amp;&gt;(ptr)</code>

libc++libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.

Status: Open.

#174315 In llvm/llvm-project;

· frederick-vs-ja opened on Jan 4, 2026

Crash when compiling from a Zed task while saving

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]

needs-reductionLarge reproducer that should be reduced into a simpler formLarge reproducer that should be reduced into a simpler form

Status: Open.

#174313 In llvm/llvm-project;

· jmsaunde opened on Jan 4, 2026

[InstCombine] Simplify select pattern of 'sitofp/uitofp + redundant fcmp/select' using ConstantFPRange

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

missed-optimization

Status: Open.

#174308 In llvm/llvm-project;

· wenju-he opened on Jan 4, 2026

LLVMOrcCreateRTDyldObjectLinkingLayerWithSectionMemoryManager() still not usable for Aarch64

orcjit

Status: Open.

#174305 In llvm/llvm-project;

· macdice opened on Jan 4, 2026

clang crash due to missing typename for dependent type

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

crash-on-valid

Status: Open.

Bug

#174301 In llvm/llvm-project;

· pfent opened on Jan 4, 2026