Hi, The test violates Fortran dummy argument aliasing rules. Overlapping elements (xx(6) and yy(1)) reference the same memory (x(6)), and the code performs both read and write through different dummy arguments, resulting in undefined behavior. Please ignore the mail. We'll update the test. We apologize for the false detection.
Best regards, Yasuyuki Ohno Software Development Div., Advanced Technology Development Unit, Fujitsu Research, Fujitsu Limited, JAPAN. ________________________________ 差出人: [email protected] <[email protected]> 送信: 2026 年 7 月 5 日 (日曜日) 21:01 宛先: [email protected] <[email protected]> Cc: [email protected] <[email protected]>; [email protected] <[email protected]> 件名: [Linaro-TCWG-CI] llvmorg-23-init-20398-g2668971e1421: 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_vla, after: | commit llvmorg-23-init-20398-g2668971e1421 | Author: Kunal Pathak <[email protected]> | Date: Wed Jun 24 08:22:51 2026 -0700 | | [AArch64][ISel] Enable profile-aware branch condition merging (#201486) | | AArch64 previously inherited the default {-1, -1, -1} for | `getJumpConditionMergingParams`, causing | `shouldKeepJumpConditionsTogether` in SelectionDAGBuilder to always | ... 28 lines of the commit log omitted. Produces 1 regression: | | regressions.sum: | Running test-suite:Fujitsu/Fortran/0328 ... | FAIL: test-suite :: Fujitsu/Fortran/0328/Fujitsu-Fortran-0328_0022.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=scalable -mllvm -scalable-vectorization=preferred -DNDEBUG" -DCMAKE_CXX_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve -msve-vector-bits=scalable -mllvm -scalable-vectorization=preferred -DNDEBUG" -DCMAKE_Fortran_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve -msve-vector-bits=scalable -mllvm -scalable-vectorization=preferred -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-2241. (Require Linaro login) Please let us know if you have a fix. If you have any questions regarding this report, please ask on [email protected] 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_vla-build/builds/10421/archive/artifacts/00-sumfiles/ 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_vla-build/builds/10421/archive/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/builds/10421/archive/artifacts/sumfiles/xfails.xfail 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_vla-build/builds/10421/archive/artifacts/ Reference build : http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/builds/10420/archive/artifacts/ Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/llvm/sha1/2668971e14219205ddf6b1f753cf83f7cb22022a/tcwg_flang_test/main-aarch64-Ofast-sve_vla/reproduction_instructions.txt Full commit : https://github.com/llvm/llvm-project/commit/2668971e14219205ddf6b1f753cf83f7cb22022a _______________________________________________ linaro-toolchain mailing list -- [email protected] To unsubscribe send an email to [email protected]
