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infra:commit-access

Status: Open.

#199803 In llvm/llvm-project;

· github-actions opened on May 27, 2026

[libc++] inefficient implementation for inserting an unsized input range at the start of a deque

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

performance

Status: Open.

#199788 In llvm/llvm-project;

· zygoloid opened on May 26, 2026

Clang does not detect misaligned store

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

undefined behaviour

Status: Open.

Bug

#199785 In llvm/llvm-project;

· vitalybuka opened on May 26, 2026

[VectorCombine] or disjoint is scalarized across bitcast while preserving the disjoint flag

confirmedVerified by a second partyVerified by a second party

llvm:vectorcombine

miscompilation

Status: Open.

#199783 In llvm/llvm-project;

· sairam2661 opened on May 26, 2026

[InstCombine] common_binop_demand_via_extelt_op0 propagates nuw from sibling binop

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

Status: Open.

#199782 In llvm/llvm-project;

· sairam2661 opened on May 26, 2026

libcxx/src/chrono.cpp fails to build with  error: cannot add 'abi_tag' attribute in a redeclaration on s390x

build-problem

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

Status: Open.

#199778 In llvm/llvm-project;

· sylvestre opened on May 26, 2026

[clang-format] Incorrect line break inside macro-concatenated class/struct names

clang-format

Status: Open.

#199775 In llvm/llvm-project;

· yueshe opened on May 26, 2026

[libc][math] NextAfter and NextToward tests are a bit flaky on Windows clang-cl.

libc

Status: Open.

#199738 In llvm/llvm-project;

· lntue opened on May 26, 2026

Request Commit Access For KavinTheG

infra:commit-access-request

Status: Open.

#199726 In llvm/llvm-project;

· KavinTheG opened on May 26, 2026

[InstCombine] Fold redundant overflow select after nsw umax-add clamp

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

Status: Open.

#199719 In llvm/llvm-project;

· ParkHanbum opened on May 26, 2026

[lld-link] [LTO] Assertion "Empty/Tombstone value shouldn't be inserted into map!" in CodeViewDebug

lld:COFF

LTOLink time optimization (regular/full LTO or ThinLTO)Link time optimization (regular/full LTO or ThinLTO)

Status: Open.

#199717 In llvm/llvm-project;

· glebov-andrey opened on May 26, 2026

[SLP][[REVEC] slp-revec will break complex FMA vectorization with reassoc+nsz+contract

llvm:SLPVectorizer

regression

Status: Open.

Bug

#199715 In llvm/llvm-project;

· Andarwinux opened on May 26, 2026