linaro-toolchain April 2026

linaro-toolchain@lists.linaro.org

14 participants
14 discussions

Potentially dodgy caching on flang-arm64-windows-msvc

by Luke Lau

Hi there, I got a notification about a build failure on the flang-arm64-windows-msvc buildbot earlier today, I’ve included the original email below. The commit in question that caused the failure added some new intrinsics, touching some tablegen files, which then caused some tests for unrelated intrinsics to fail: https://github.com/llvm/llvm-project/commit/9ba774566e27b76b9c7c2b2ddd108c1… https://lab.llvm.org/buildbot/#/builders/207/builds/15865 But the buildbot went back to green in https://lab.llvm.org/buildbot/#/builders/207/builds/15869 when another PR changed some other tablegen files in the llvm project. I didn’t revert or commit any fixes in the meantime. Is there maybe some issue with the build cache and how tablegen files interact with it? Just thought I’d flag this to you anyway. Many thanks Luke > Begin forwarded message: > > From: llvm.buildmaster(a)lab.llvm.org > Subject: ☠ Buildbot (LLVM Buildbot): flang-arm64-windows-msvc - failed test (failure) (main) > Date: 9 April 2026 at 16:03:07 GMT+8 > To: "Luke Lau" <luke(a)igalia.com>, "Nikita Popov" <npopov(a)redhat.com> > Cc: llvm.buildmaster(a)lab.llvm.org > Reply-To: llvm.buildmaster(a)lab.llvm.org > > The Buildbot has detected a new failure on builder flang-arm64-windows-msvc while building llvm. > > Full details are available at: > https://lab.llvm.org/buildbot/#/builders/207/builds/15865 > > Worker for this Build: linaro-armv8-windows-msvc-01 > Blamelist: > Luke Lau <luke(a)igalia.com>, > Nikita Popov <npopov(a)redhat.com> > > BUILD FAILED: failed test (failure) > > Step 6 (test-build-unified-tree-check-mlir) failure: test (failure) > ******************** TEST 'MLIR :: mlir-runner/test-expand-math-approx.mlir' FAILED ******************** > Exit Code: 2 > > Command Output (stdout): > -- > # RUN: at line 1 > c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir-opt.exe C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\llvm-project\mlir\test\mlir-runner\test-expand-math-approx.mlir -pass-pipeline="builtin.module(func.func(math-expand-ops),convert-vector-to-scf,convert-scf-to-cf,convert-vector-to-llvm,convert-to-llvm,reconcile-unrealized-casts)" | c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir-runner.exe -e main -entry-point-result=void -O0 -shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_c_runner_utils.dll -shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_runner_utils.dll -shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_float16_utils.dll | c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\filecheck.exe C:\Users\tcwg\llvm-worker\flang-arm64-windows-ms > vc\llvm-project\mlir\test\mlir-runner\test-expand-math-approx.mlir > # executed command: 'c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir-opt.exe' 'C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\llvm-project\mlir\test\mlir-runner\test-expand-math-approx.mlir' '-pass-pipeline=builtin.module(func.func(math-expand-ops),convert-vector-to-scf,convert-scf-to-cf,convert-vector-to-llvm,convert-to-llvm,reconcile-unrealized-casts)' > # executed command: 'c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir-runner.exe' -e main -entry-point-result=void -O0 '-shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_c_runner_utils.dll' '-shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_runner_utils.dll' '-shared-libs=C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir_float16_utils.dll' > # .---command stderr------------ > # | LLVM ERROR: Cannot select: intrinsic %llvm.aarch64.neon.ushl > # | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug. > # | Stack dump: > # | 0. Program arguments: c:\\users\\tcwg\\llvm-worker\\flang-arm64-windows-msvc\\build\\bin\\mlir-runner.exe -e main -entry-point-result=void -O0 -shared-libs=C:\\Users\\tcwg\\llvm-worker\\flang-arm64-windows-msvc\\build\\bin\\mlir_c_runner_utils.dll -shared-libs=C:\\Users\\tcwg\\llvm-worker\\flang-arm64-windows-msvc\\build\\bin\\mlir_runner_utils.dll -shared-libs=C:\\Users\\tcwg\\llvm-worker\\flang-arm64-windows-msvc\\build\\bin\\mlir_float16_utils.dll > # | 1. Running pass 'Function Pass Manager' on module 'LLVMDialectModule'. > # | 2. Running pass 'AArch64 Instruction Selection' on function '@"func_roundeven32$vector"' > # | Exception Code: 0xC000001D > # | #0 0x00007ff674c89e4c mlir::detail::FallbackTypeIDResolver::registerImplicitTypeID(class llvm::StringRef) (c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\mlir-runner.exe+0x309e4c) > # | #1 0x00007ffec74aae50 (C:\WINDOWS\System32\ucrtbase.dll+0x7ae50) > # | #2 0xa25cfffec74aba5c > # `----------------------------- > # error: command failed with exit status: 0xc000001d > # executed command: 'c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\filecheck.exe' 'C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\llvm-project\mlir\test\mlir-runner\test-expand-math-approx.mlir' > # .---command stderr------------ > # | FileCheck error: '<stdin>' is empty. > # | FileCheck command line: c:\users\tcwg\llvm-worker\flang-arm64-windows-msvc\build\bin\filecheck.exe C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\llvm-project\mlir\test\mlir-runner\test-expand-math-approx.mlir > # `----------------------------- > # error: command failed with exit status: 2 > > -- > > ******************** > > > Sincerely, > LLVM Buildbot >

1 week, 1 day

Re: [Linaro-TCWG-CI] gcc-16-8510-g395e5cef29d9: 1 regression on aarch64

by Tomasz Kaminski

This is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124828. On Fri, Apr 10, 2026 at 1:15 AM <ci_notify(a)linaro.org> wrote: > Dear contributor, > > Our automatic CI has detected problems related to your patch(es). Please > find some details below. > > In aarch64 native, after: > | commit gcc-16-8510-g395e5cef29d9 > | Author: Tomasz Kamiński <tkaminsk(a)redhat.com> > | Date: Wed Apr 1 14:32:21 2026 +0200 > | > | libstdc++: Export explicit instantiations for C++20 members of > std::string > | > | The C++20 standard added new starts_with and ends_with members to > | std::basic_string, which were not previously instantiated in the > library. > | This meant that the extern template declarations had to be > disabled for > | ... 31 lines of the commit log omitted. > > Produces 1 regression: > | > | regressions.sum: > | Running g++:g++.dg/lto/lto.exp ... > | FAIL: g++.dg/lto/20091022-2 > cp_lto_20091022-2_0.o-cp_lto_20091022-2_0.o link, -O3 -flto -Winline > > Used configuration : > *CI config* tcwg_gcc_check aarch64-linux-gnu > *configure and test flags:* none, autodetected on > aarch64-unknown-linux-gnu--disable-multilib --enable-fix-cortex-a53-835769 > --enable-fix-cortex-a53-843419 --with-arch=armv8-a > > We track this bug report under > https://linaro.atlassian.net/browse/GNU-1869. Please let us know if you > have a fix. > > If you have any questions regarding this report, please ask on > linaro-toolchain(a)lists.linaro.org mailing list. > > > -----------------8<--------------------------8<--------------------------8<-------------------------- > > The information below contains the details of the failures, and the ways > to reproduce a debug environment: > > You can find the failure logs in *.log.1.xz files in > * > http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > The full lists of regressions and improvements as well as configure and > make commands are in > * > http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > The list of [ignored] baseline and flaky failures are in > * > http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > > Current build : > http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > Reference build : > http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > > Instruction to reproduce the build : > https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/s… > > Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git >

1 week, 4 days

Re: [Linaro-TCWG-CI] gcc-16-8385-gc9525a790291: 3 regressions on aarch64

by Jonathan Wakely

On Thu, 2 Apr 2026 at 06:27, <ci_notify(a)linaro.org> wrote: > > Dear contributor, > > Our automatic CI has detected problems related to your patch(es). Please find some details below. > > In aarch64 native, after: > | commit gcc-16-8385-gc9525a790291 > | Author: Jonathan Wakely <jwakely(a)redhat.com> > | Date: Mon Mar 30 12:13:39 2026 +0100 > | > | libstdc++: Rename saturation arithmetic for C++26 (P4052R0) > | > | Last week in Croydon we approved P4052R0 to rename std::add_sat etc. for > | C++26 > | > | ... 16 lines of the commit log omitted. > > Produces 3 regressions: > | > | regressions.sum: > | Running g++:g++.dg/modules/modules.exp ... > | FAIL: g++.dg/modules/compile-std1.C -std=c++26 (test for excess errors) > | FAIL: g++.dg/modules/compile-std1.C module-cmi std (gcm.cache/std.gcm) > | FAIL: g++.dg/modules/compile-std1.C module-cmi std.compat (gcm.cache/std.compat.gcm) > > Used configuration : > *CI config* tcwg_gcc_check aarch64-linux-gnu > *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu--disable-multilib --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419 --with-arch=armv8-a > > We track this bug report under https://linaro.atlassian.net/browse/GNU-1867. Please let us know if you have a fix. It's fixed now > > If you have any questions regarding this report, please ask on linaro-toolchain(a)lists.linaro.org mailing list. > > -----------------8<--------------------------8<--------------------------8<-------------------------- > > The information below contains the details of the failures, and the ways to reproduce a debug environment: > > You can find the failure logs in *.log.1.xz files in > * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > The full lists of regressions and improvements as well as configure and make commands are in > * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > The list of [ignored] baseline and flaky failures are in > * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > > Current build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > Reference build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/… > > Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/s… > > Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git

2 weeks, 5 days

RE: [Linaro-TCWG-CI] llvmorg-23-init-9791-g12319b373a5f: 1 regression on aarch64

by Shunsuke Watanabe (Fujitsu)

Hi, These errors are caused by incorrect test programs. Please ignore the mail. We'll update the tests. I apologize for the false detection. Best regards, Shunsuke Watanabe Software Development Div., Advanced Technology Development Unit, Fujitsu Research, Fujitsu Limited, JAPAN. -----Original Message----- From: ci_notify(a)linaro.org <ci_notify(a)linaro.org> Sent: Wednesday, April 1, 2026 2:37 AM To: contact-ci-compiler-test-suite(a)cs.jp.fujitsu.com Cc: aidengrossman(a)google.com; maxim.kuvyrkov(a)linaro.org Subject: [Linaro-TCWG-CI] llvmorg-23-init-9791-g12319b373a5f: 1 regression on aarch64 Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In tcwg_flang_test/main-aarch64-Ofast-sve_vls-lto-lld, after: | commit llvmorg-23-init-9791-g12319b373a5f | Author: Aiden Grossman <aidengrossman(a)google.com> | Date: Mon Mar 30 16:34:37 2026 -0700 | | [Clang] More aggressively mark this* dead_on_return in destructors (#183347) | | Now also mark the this pointer dead_on_return for classes with a | non-zero number of base classes. We saw a limited number of failures | internally due to this change, so it doesn't seem like there are too | ... 1 lines of the commit log omitted. Produces 1 regression: | | regressions.sum: | Running test-suite:Fujitsu/C++/0032 ... | FAIL: test-suite :: Fujitsu/C++/0032/Fujitsu-C++-0032_1052.test | # "FAIL" means : the execution of the compiled binary failed / output of the binary differs from the expected one Used configuration : * Toolchain : cmake -G Ninja ../llvm/llvm "-DLLVM_ENABLE_PROJECTS=clang;lld;flang;clang-tools-extra" "-DLLVM_ENABLE_RUNTIMES=openmp" -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=True -DCMAKE_INSTALL_PREFIX=../llvm-install "-DLLVM_TARGETS_TO_BUILD=AArch64" -DCLANG_DEFAULT_LINKER=lld * Testsuite : export LD_LIBRARY_PATH=$\WORKSPACE/llvm-install/lib/aarch64-unknown-linux-gnu$\{LD_LIBRARY_PATH:+:$\LD_LIBRARY_PATH} cmake -GNinja -DCMAKE_C_COMPILER="$\WORKSPACE/llvm-install/bin2/clang" -DCMAKE_CXX_COMPILER="$\WORKSPACE/llvm-install/bin2/clang++" -DCMAKE_Fortran_COMPILER="$\WORKSPACE/llvm-install/bin2/flang-new" -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS= -DCMAKE_CXX_FLAGS= -DCMAKE_Fortran_FLAGS= -DCMAKE_C_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve -msve-vector-bits=256 -flto -fuse-ld=lld -DNDEBUG" -DCMAKE_CXX_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve -msve-vector-bits=256 -flto -fuse-ld=lld -DNDEBUG" -DCMAKE_Fortran_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve -msve-vector-bits=256 -flto -fuse-ld=lld -DNDEBUG" -DTEST_SUITE_FORTRAN=ON -DTEST_SUITE_SUBDIRS=Fujitsu -DTEST_SUITE_FUJITSU_WITH_FAST_MATH=ON "$\WORKSPACE/test/test-suite" We track this bug report under https://linaro.atlassian.net/browse/LLVM-2208. Please let us know if you have a fix. If you have any questions regarding this report, please ask on linaro-toolchain(a)lists.linaro.org mailing list. -----------------8<--------------------------8<--------------------------8<-------------------------- The information below contains the details of the failures, and the ways to reproduce a debug environment: You can find the failure logs in *.log.1.xz files in * http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-… The full lists of regressions and improvements as well as configure and make commands are in * http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-… The list of [ignored] baseline and flaky failures are in * http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-… Fujitsu testsuite : https://github.com/fujitsu/compiler-test-suite/ Current build : http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-… Reference build : http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-… Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/llvm/… Full commit : https://github.com/llvm/llvm-project/commit/12319b373a5f4b36c09165ed7f8e967…

2 weeks, 6 days

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linaro-toolchain April 2026