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-11166-g8ac9461e48e0
  | Author: Alexey Bataev <a.bataev@outlook.com>
  | Date:   Sat Apr 11 08:18:36 2026 -0400
  | 
  |     [SLP] Reject 2-element vectorization when vector inst count exceeds scalar
  |     
  |     The LLVM cost model uses integer-valued throughput costs which cannot
  |     represent fractional costs. For 2-element vectors, this rounding can
  |     make vectorization appear profitable when it actually produces more
  | ... 15 lines of the commit log omitted.

Produces 1 regression 1 fix:
  | 
  | regressions.sum:
  | Running test-suite:Fujitsu/C/0121 ...
  | FAIL: test-suite :: Fujitsu/C/0121/Fujitsu-C-0121_0259.test
  | # "FAIL" means : the execution of the compiled binary failed / output of the binary differs from the expected one
  | 
  | fixes.sum:
  | Running test-suite:Fujitsu/Fortran/0640 ...
  | FAIL: test-suite :: Fujitsu/Fortran/0640/Fujitsu-Fortran-0640_0216.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-2210. Please let us know if you have a fix.

If you have any questions regarding this report, please ask on linaro-toolchain@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-lto-lld-build/builds/10112/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_vls-lto-lld-build/builds/10112/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_vls-lto-lld-build/builds/10112/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_vls-lto-lld-build/builds/10112/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_flang_test--main-aarch64-Ofast-sve_vls-lto-lld-build/builds/10111/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/llvm/sha1/8ac9461e48e024448a2b6493b7c5b50629bc03d7/tcwg_flang_test/main-aarch64-Ofast-sve_vls-lto-lld/reproduction_instructions.txt

Full commit : https://github.com/llvm/llvm-project/commit/8ac9461e48e024448a2b6493b7c5b50629bc03d7