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[MLIR] GPU lowering pipeline causes a crash due to optional compilation target handling

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

mlir:gpu

Status: Open.

Bug

#178830 In llvm/llvm-project;

· tisble opened on Jan 30, 2026

mlir-opt --canonicalize crashes when folding shape.from_extents with ub.poison, triggered by smt.solver

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

generated by fuzzer

mlir:shape

Status: Open.

Bug

#178820 In llvm/llvm-project;

· compilerStudyer opened on Jan 30, 2026

mlir-opt --canonicalize crashes with assertion failure when folding tensor.from_elements containing ub.poison

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

mlir:tensor

Status: Open.

Bug

#178818 In llvm/llvm-project;

· compilerStudyer opened on Jan 30, 2026

[Flang] assignment to a procedure pointer within structure constructors does not work correctly

flangFlang issues not falling into any other categoryFlang issues not falling into any other category

Status: Open.

#178813 In llvm/llvm-project;

· 3776-u2 opened on Jan 30, 2026

[Flang] When -fstack-arrays is specified, the dummy argument corresponding to an actual argument of a character array expression results in abnormal behavior

flangFlang issues not falling into any other categoryFlang issues not falling into any other category

Status: Open.

#178812 In llvm/llvm-project;

· 3776-u2 opened on Jan 30, 2026

[TailRecElim] TRE fails to optimize <code>shl</code> accumulators (phase ordering issue with <code>InstCombine</code>)

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

Status: Open.

#178805 In llvm/llvm-project;

· FedericoBruzzone opened on Jan 30, 2026

__arm_streaming C++ mangling missing on Windows

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

platform:windows

Status: Open.

#178804 In llvm/llvm-project;

· efriedma-quic opened on Jan 30, 2026

clang-tidy: Assertion `isa&lt;To&gt;(Val) &amp;&amp; "cast&lt;Ty&gt;() argument of incompatible type! in RegionStoreManager::bindArray

clang:static analyzer

crash-on-valid

Status: Open.

Bug

#178797 In llvm/llvm-project;

· vogelsgesang opened on Jan 30, 2026

[X86] Missed Fold: <code>vgf2p8affineqb(x, m, imm8) ^ C</code> =&gt; <code>vgf2p8affineqb(x, m, imm8 ^ C)</code>

backend:X86

missed-optimization

Status: Open.

#178795 In llvm/llvm-project;

· WalterKruger opened on Jan 30, 2026

[Flang][OpenMP] Compilation error when 8-byte integer constant is specified for linear-step of LINEAR clause

flang:ir

flang:openmp

Status: Open.

#178793 In llvm/llvm-project;

· ohno-fj opened on Jan 30, 2026

[X86] Missed fold: <code>vgf2p8affineqb</code> + 8-bit shifts

backend:X86

missed-optimization

Status: Open.

#178792 In llvm/llvm-project;

· WalterKruger opened on Jan 30, 2026

[Flang] Incorrect execution result when the array described in scalar-mask-expr within do concurrent construct is redefined in do concurrent loop during execution

flangFlang issues not falling into any other categoryFlang issues not falling into any other category

Status: Open.

#178791 In llvm/llvm-project;

· ohno-fj opened on Jan 30, 2026