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[Clang][Codegen] Rint always lowered to llvm intrinsic

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

floating-pointFloating-point mathFloating-point math

Status: Open.

#168139 In llvm/llvm-project;

· HendrikHuebner opened on Nov 14, 2025

ARM64EC code ranges broken

backend:AArch64

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

platform:windows

Status: Open.

#168119 In llvm/llvm-project;

· confined8095 opened on Nov 14, 2025

[clang][DebugInfo] Thunks created by <code>CodeGenFunction::GenerateVarArgsThunk</code> have incorrect parameters list in DWARF

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

debuginfo

Status: Open.

#168082 In llvm/llvm-project;

· dzhidzhoev opened on Nov 14, 2025

21.1.x clang-cl crash [Exception Code: 0xC0000005]

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

regression:21Regression in 21 releaseRegression in 21 release

Status: Open.

Bug

#167433 In llvm/llvm-project;

· Rinn opened on Nov 11, 2025

Represent C macros in clang as inline functions in debug information

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

debuginfo

Status: Open.

#167196 In llvm/llvm-project;

· jrmuizel opened on Nov 9, 2025

<code>sysv_abi</code> attribute for constructors and destructors on Windows, and/or in a pragma?

ABIApplication Binary InterfaceApplication Binary Interface

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"

platform:windows

Status: Open.

Feature

#166925 In llvm/llvm-project;

· solbjorn opened on Nov 7, 2025

Initialization of union not raise expected FPU flag

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

floating-pointFloating-point mathFloating-point math

Status: Open.

#166866 In llvm/llvm-project;

· tydeman opened on Nov 6, 2025

[llvm] [debuginfo] <code>DW_TAG_typedef</code> generated by <code>clang::preferred_name</code> has wrong <code>DW_AT_decl_line</code> value

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

debuginfo

Status: Open.

#166673 In llvm/llvm-project;

· royitaqi opened on Nov 6, 2025

Code with complex and bool crashed compiler

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

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

crash-on-valid

floating-pointFloating-point mathFloating-point math

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

Status: Open.

Bug

#166512 In llvm/llvm-project;

· tydeman opened on Nov 5, 2025

LLVM out of memory in clang that does not happen in GCC

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

confirmedVerified by a second partyVerified by a second party

crash-on-valid

Status: Open.

Bug

#166333 In llvm/llvm-project;

· mariete1223 opened on Nov 4, 2025

Crash BasicBlock::getDataLayout() in clang since clang 3.9

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

confirmedVerified by a second partyVerified by a second party

crash-on-valid

Status: Open.

Bug

#166331 In llvm/llvm-project;

· mariete1223 opened on Nov 4, 2025

LLVM failed to run tests on Windows

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

clang:modulesC++20 modules and Clang Header ModulesC++20 modules and Clang Header Modules

debuginfo

test-suite

Status: Open.

#166319 In llvm/llvm-project;

· KarenHuang2016 opened on Nov 4, 2025