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AMDGPU backend could optimize some f64 compares with constants to integer compare of the high half

backend:AMDGPU

missed-optimization

Status: Open.

Feature

#187996 In llvm/llvm-project;

· arsenm opened on Mar 23, 2026

lld-link crashes when linking clang-cl compiled thin-lto library

new issue

Status: Open.

#187995 In llvm/llvm-project;

· Jimbopython opened on Mar 23, 2026

[clang-format] AllowShortFunctionsOnASingleLine not respected

clang-format

Status: Open.

#187993 In llvm/llvm-project;

· kociap opened on Mar 23, 2026

[clang-format] Unexpected alignment of assignments when function arguments do not fit on a single line

clang-format

Status: Open.

#187987 In llvm/llvm-project;

· markus456 opened on Mar 23, 2026

[MLIR][Linalg][Canonicalize] Crash in FoldTensorCastUnPackOp::matchAndRewrite via getNewMixedTileSizes when tile size is dynamic (bad_optional_access on nullopt from getConstantIntValue)

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

mlir

Status: Open.

Bug

#187975 In llvm/llvm-project;

· YuanchengJiang opened on Mar 23, 2026

[MLIR] Assertion "incorrect fold result type" in tosa.transpose folder when folding identity permutation on ranked input with unranked result type

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

mlir

Status: Open.

Bug

#187974 In llvm/llvm-project;

· YuanchengJiang opened on Mar 23, 2026

[MLIR] Assertion !getType().isSignlessInteger() in IntegerAttr::getInt() when running --sccp on emitc.switch with unsigned integer condition

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

mlir

Status: Open.

Bug

#187973 In llvm/llvm-project;

· YuanchengJiang opened on Mar 23, 2026

[MLIR] Assertion !NodePtr->isKnownSentinel() in DeadCodeAnalysis::visitRegionBranchEdges when processing acc.serial with empty region

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

mlir

Status: Open.

Bug

#187972 In llvm/llvm-project;

· YuanchengJiang opened on Mar 23, 2026

Missed optimization: inliner penalizes std::array vs std::span in lambda

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

loopoptim

missed-optimization

Status: Open.

#187968 In llvm/llvm-project;

· tchatow opened on Mar 23, 2026

Add _LIBCPP_HAS_BITINT to libcxx

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

Status: Open.

#187961 In llvm/llvm-project;

· ZERICO2005 opened on Mar 23, 2026

Miscompilation at -O2 with profile data using PGO

llvm:optimizations

miscompilation

PGOProfile Guided OptimizationsProfile Guided Optimizations

Status: Open.

#187952 In llvm/llvm-project;

· zxt5 opened on Mar 22, 2026

[mlir][gpu] -gpu-kernel-outlining does not retarget or reject nested gpu.launch_func symbol refs

mlir:gpu

Status: Open.

#187942 In llvm/llvm-project;

· Men-cotton opened on Mar 22, 2026