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[Indvars] Miscompile: SSA value incorrectly simplified

llvm:SCEVScalar EvolutionScalar Evolution

miscompilation

release:backport

Status: Closed (completed).

Bug

#123550 In llvm/llvm-project;

· by Nirhar was closed on Jan 29, 2025

Backport ac217ee to release/20.x

llvm:SLPVectorizer

release:backport

Status: Closed (completed).

#127264 In llvm/llvm-project;

· by Zentrik was closed on Feb 14, 2025

[TBAA][GVN] Miscompile due to incorrectly replacing pointer with undef

llvm:GVNGVN and NewGVN stages (Global value numbering)GVN and NewGVN stages (Global value numbering)

miscompilation

release:backport

TBAAType-Based Alias Analysis / Strict AliasingType-Based Alias Analysis / Strict Aliasing

Status: Closed (completed).

Bug

#122537 In llvm/llvm-project;

· by mshockwave was closed on Jan 31, 2025

[clang-cl] arm_neon.h: cannot mangle built-in type __mfp8

backend:AArch64

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

NEONARM NEONARM NEON

Status: Closed (completed).

#124907 In llvm/llvm-project;

· by tycho was closed on Jan 30, 2025

[lldb] Remove PATH workaround for Android

lldb

release:backport

Status: Closed (completed).

#124897 In llvm/llvm-project;

· by brad0 was closed on Jan 29, 2025

[flang] build broken on FreeBSD

build-problem

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

platform:freebsd

Status: Closed (completed).

#124978 In llvm/llvm-project;

· by brooksdavis was closed on Feb 14, 2025

[LIBC] Invalid token in LIBC_NAMESPACE macro expansion

build-problem

libc

Status: Closed (completed).

#125831 In llvm/llvm-project;

· by samvangysegem was closed on Feb 7, 2025

Backport bac62ee to release/20.x

cmakeBuild system in general and CMake in particularBuild system in general and CMake in particular

release:backport

Status: Closed (completed).

#125554 In llvm/llvm-project;

· by JDevlieghere was closed on Feb 3, 2025

[benchmark] Get number of CPUs with sysconf() on Linux

release:backport

third-party:benchmark

Status: Closed (completed).

#125623 In llvm/llvm-project;

· by brad0 was closed on Feb 4, 2025

[flang][runtime] Make sure to link libexecinfo if it exists

cmakeBuild system in general and CMake in particularBuild system in general and CMake in particular

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

release:backport

Status: Closed (completed).

#125514 In llvm/llvm-project;

· by brad0 was closed on Feb 3, 2025

libc/CMakeLists.txt: <code>string sub-command REPLACE requires at least four arguments.</code>

build-problem

libc

Status: Closed (completed).

#126358 In llvm/llvm-project;

· by sylvestre was closed on Feb 13, 2025

Pull compact-unwind support into llvm-20 (2nd attempt)

jitlink

orcjit

release:backport

Status: Closed (completed).

#126360 In llvm/llvm-project;

· by lhames was closed on Feb 8, 2025

release/20.x: lld/ELF commits

lld:ELF

release:backport

Status: Closed (completed).

#125332 In llvm/llvm-project;

· by MaskRay was closed on Feb 12, 2025

Printing std::chrono::time_point requires std::to_chars&lt;long double&gt;

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

platform:macos

Status: Closed (completed).

#125353 In llvm/llvm-project;

· by georgthegreat was closed on Feb 14, 2025

BUG: v20.1.0.rc1 fails <code>ninja check-llvm</code> with two failed <code>ExecutionEngine/OrcLazy</code> tests

orcjit

release:backport

test-suite

Status: Closed (completed).

#125393 In llvm/llvm-project;

· by h-vetinari was closed on Feb 2, 2025

in-class template friend declaration of template class gets attached to module which instantiates it

clang:modulesC++20 modules and Clang Header ModulesC++20 modules and Clang Header Modules

Status: Closed (completed).

#126373 In llvm/llvm-project;

· by es1024 was closed on Feb 11, 2025

[clang] Miscompilation at -O3

miscompilation

release:backport

vectorizers

Status: Closed (completed).

Bug

#119173 In llvm/llvm-project;

· by cardigan1008 was closed on Feb 4, 2025

[clang] Crash at -O2: Assertion `isAvailableAtLoopEntry(LHS, L) &amp;&amp; "LHS is not available at Loop Entry"' failed.

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

regression:18Regression in 18 releaseRegression in 18 release

release:backport

vectorizers

Status: Closed (completed).

Bug

#119665 In llvm/llvm-project;

· by cardigan1008 was closed on Feb 10, 2025

[VPlan] Assertion "VPlan cost model and legacy cost model disagreed"' failed.

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

release:backport

vectorizers

Status: Closed (completed).

Bug

#115744 In llvm/llvm-project;

· by patrick-rivos was closed on Feb 25, 2025

Clang's isSignedCharDefault() is incorrect for multiple architectures

ABIApplication Binary InterfaceApplication Binary Interface

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

confirmedVerified by a second partyVerified by a second party

diverges-from:gccDoes the clang frontend diverge from gcc on this issueDoes the clang frontend diverge from gcc on this issue

release:backport

Status: Closed (completed).

#115957 In llvm/llvm-project;

· by arichardson was closed on Feb 9, 2025

chrono::time_zone::to_sys() on 'nonexistent time' deviates

chronoIssues related to std::chronoIssues related to std::chrono

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

Status: Closed (completed).

#113654 In llvm/llvm-project;

· by chrisse74 was closed on Feb 17, 2025

[libc++] sys_info.zdump.pass.cpp fails on <code>%z</code> format with tzdata 2024b

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

Status: Closed (completed).

#108957 In llvm/llvm-project;

· by mgorny was closed on Feb 4, 2025

Clang-format (20): Incorrect behavior with BreakBinaryOperations

clang-format

regression

release:backport

Status: Closed (completed).

Bug

#105482 In llvm/llvm-project;

· by kihot122 was closed on Feb 27, 2025

clang-format regression around class declarations with attributes

clang-format

regression

release:backport

Status: Closed (completed).

Bug

#127470 In llvm/llvm-project;

· by kadircet was closed on Feb 18, 2025

[libc++] Back-port 0227396 to LLVM 20

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

release:backport

Status: Closed (completed).

#127676 In llvm/llvm-project;

· by philnik777 was closed on Feb 18, 2025