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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

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

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

[Flang][AArch64] Missed optimization opportunities with <code>unsafe-math-optimizations</code>

floating-pointFloating-point mathFloating-point math

missed-optimization

Status: Open.

#165809 In llvm/llvm-project;

· yus3710-fj opened on Oct 31, 2025

[Host-dependent][ARM vs x86] ConstantFoldBinaryFP affects DCE consistency

floating-pointFloating-point mathFloating-point math

llvm:transforms

Status: Open.

#165644 In llvm/llvm-project;

· guoxin049 opened on Oct 30, 2025

[X86] Miscompile when using <code>-ftrapping-math</code>

backend:X86

floating-pointFloating-point mathFloating-point math

miscompilation

Status: Open.

#164802 In llvm/llvm-project;

· abhishek-kaushik22 opened on Oct 23, 2025

clang++ miscompiles std::pow with mixed types when using -O3 -fno-math-errno -fveclib=libmvec

floating-pointFloating-point mathFloating-point math

llvm:optimizations

miscompilation

Status: Open.

#164642 In llvm/llvm-project;

· davidbatetc opened on Oct 22, 2025

Mathematical operations on constant zero are not folded away

floating-pointFloating-point mathFloating-point math

llvm:optimizations

missed-optimization

Status: Open.

#164023 In llvm/llvm-project;

· mqudsi opened on Oct 17, 2025

bool bitfield += complex gets infinite loop

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

floating-pointFloating-point mathFloating-point math

Status: Open.

#163140 In llvm/llvm-project;

· tydeman opened on Oct 13, 2025

A pragma incorrectly suppresses FMA in the IR without <code>-ffp-contract=fast-honor-pragmas</code>

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

floating-pointFloating-point mathFloating-point math

Status: Open.

#162550 In llvm/llvm-project;

· wjristow opened on Oct 8, 2025

x86 optimization: Missed merging comparison of isunordered() and islessgreater()

backend:X86

floating-pointFloating-point mathFloating-point math

missed-optimization

Status: Open.

#157874 In llvm/llvm-project;

· Explorer09 opened on Sep 10, 2025

isunordered() can miss merging with FP comparisons with same operands if operands are swapped.

backend:X86

floating-pointFloating-point mathFloating-point math

missed-optimization

Status: Open.

#157812 In llvm/llvm-project;

· Explorer09 opened on Sep 10, 2025