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Issues list

Incorrect result due to -new-struct-path-tbaa on strict-alias analysis clang:codegen IR generation bugs: mangling, exceptions, etc. miscompilation TBAA Type-Based Alias Analysis / Strict Aliasing
#141578 opened May 27, 2025 by dongjianqiang2
5
Wrong folding to fabs floating-point Floating-point math llvm:instcombine miscompilation
#141538 opened May 27, 2025 by bongjunj
2
va_arg miscompiles on x86_64 miscompilation
#141361 opened May 24, 2025 by folkertdev
2
Unknown references and pointers related bad codegen clang:frontend Language frontend issues, e.g. anything involving "Sema" miscompilation needs-reduction Large reproducer that should be reduced into a simpler form
#141114 opened May 22, 2025 by shafik
@shafik
9
[InstCombine] Miscompilation select (fcmp nsz olt X, 0.0), -0.0, X -> select (fcmp nsz ole X, -0.0), -0.0, X floating-point Floating-point math llvm:instcombine miscompilation
#141017 opened May 22, 2025 by dtcxzyw
@dtcxzyw
[InstCombine] (fcmp une T, F) ? T : F --> T should not rely on the nsz flag on fcmp floating-point Floating-point math llvm:instcombine miscompilation
#140994 opened May 22, 2025 by dtcxzyw
1
@dtcxzyw
[InstCombine] Do not rely on the nsz flag on fcmp floating-point Floating-point math llvm:instcombine metabug Issue to collect references to a group of similar or related issues. miscompilation
#140992 opened May 22, 2025 by dtcxzyw
@dtcxzyw
[LoopInterchange] Incorrect exchange happens when the Levels of Dependence is less than the depth of the loop nest loopoptim miscompilation
#140238 opened May 16, 2025 by kasuga-fj
1
1
AMDGPU mishandles canonicalize with ieee mode disabled backend:AMDGPU miscompilation
#139622 opened May 12, 2025 by arsenm
1
fmaximum/minimum_num incorrect result for -0/+0 floating-point Floating-point math llvm:codegen miscompilation
#139481 opened May 11, 2025 by gonzalobg
2
[GlobalISel] Indirectify memory inputs for inline assembly llvm:globalisel miscompilation
#139078 opened May 8, 2025 by Pierre-vh
[lld] Wrong folding of .data.rel.ro section in ICF for armv7a-linux-gnueabihf lld miscompilation
#138764 opened May 6, 2025 by sergio-gdr
[InstCombine] Formation of fmax ignores SNaN floating-point Floating-point math llvm:instcombine miscompilation
#138303 opened May 2, 2025 by nunoplopes
2
@wzssyqa
6
AArch64 backend folds fcmp nnan nsz + select to fminnm, causing confusion between +0.0 and -0.0 backend:AArch64 floating-point Floating-point math llvm:codegen miscompilation
#137998 opened Apr 30, 2025 by regehr
3
[lld] Non-compact (DWARF) unwind data emission is broken on MacOS if LTO is in use lld:MachO LTO Link time optimization (regular/full LTO or ThinLTO) miscompilation
#135888 opened Apr 16, 2025 by duk-37
1
Clang fails to consider default arguments reachable at the instantiation context accepts-invalid c++ clang:frontend Language frontend issues, e.g. anything involving "Sema" confirmed Verified by a second party diverges-from:edg Does the clang frontend diverge from edg compiler diverges-from:gcc Does the clang frontend diverge from gcc on this issue diverges-from:msvc Does the clang frontend diverge from msvc on this issue miscompilation rejects-valid
#135442 opened Apr 11, 2025 by hubert-reinterpretcast
2
[CodeGen] Miscompile with llvm.maximumnum.f64 and llvm.maximum.f64 backend:X86 floating-point Floating-point math miscompilation
#135313 opened Apr 11, 2025 by patrick-rivos
@RKSimon
5
[Mips] Presence of inline asm instructions affects ELF ABI info backend:MIPS miscompilation
#135283 opened Apr 10, 2025 by alexrp
2
Incorrect float conversion via __bf16 at -O0 backend:X86 confirmed Verified by a second party llvm:codegen miscompilation
#134222 opened Apr 3, 2025 by PenXLa
1
@antoniofrighetto
3
clang 19 or 20 miscompiles llvm::MergeBasicBlockIntoOnlyPred for PPC32 backend:PowerPC miscompilation
#133507 opened Mar 28, 2025 by kernigh
2
[clang][clangIR] Missing assignment in loop, which may comes from wrong TBAA. clang Clang issues not falling into any other category ClangIR Anything related to the ClangIR project miscompilation
#133404 opened Mar 28, 2025 by youngHC
[GVN] GVN hoists the load before llvm.lifetime.start generated by fuzzer llvm:GVN GVN and NewGVN stages (Global value numbering) miscompilation
#132952 opened Mar 25, 2025 by dtcxzyw
@dtcxzyw
[StackColoring] Incorrect slot merging due to stackcoloring-lifetime-start-on-first-use llvm:codegen miscompilation
#132085 opened Mar 19, 2025 by tmiasko
8
[InstCombine] Empty lifetime range removal changes behaviour llvm:instcombine miscompilation
#131927 opened Mar 18, 2025 by tmiasko
[NVPTX] sqrtf always approximated with llvm.nvvm.sqrt.approx.f backend:NVPTX clang:codegen IR generation bugs: mangling, exceptions, etc. miscompilation
#131749 opened Mar 18, 2025 by Lai-YT
6
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