Hi,
Florian Hahn and I landed 2 patches for fixing FindLastIV reductions
idiom.
https://github.com/llvm/llvm-project/commit/0e528ac404e13ed2d952a2d83aaf8383293c851e
https://github.com/llvm/llvm-project/commit/3397950f2d21426c7520d114a12588128906a897
I think those can fix the issue you are facing. Please try them, and let me
know if you still have regression on it.
Mel
On Fri, Dec 13, 2024 at 7:11 AM <ci_not...@linaro.org> wrote:
> 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-20-init-15150-gb3cba9be41bf
> | Author: Mel Chen <mel.c...@sifive.com>
> | Date: Thu Dec 12 16:48:31 2024 +0800
> |
> | [LoopVectorize] Vectorize select-cmp reduction pattern for
> increasing integer induction variable (#67812)
> |
> | Consider the following loop:
> | ```
> | int rdx = init;
> | ... 12 lines of the commit log omitted.
>
> Produces 2 regressions:
> | Running test-suite:Fujitsu/Fortran/0365 ...
> | FAIL: test-suite :: Fujitsu/Fortran/0365/Fujitsu-Fortran-0365_0185.test
> | FAIL: test-suite :: Fujitsu/Fortran/0365/Fujitsu-Fortran-0365_0186.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;openmp;clang-tools-extra"
> -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/bin/clang"
> -DCMAKE_CXX_COMPILER="$\WORKSPACE/llvm-install/bin/clang++"
> -DCMAKE_Fortran_COMPILER="$\WORKSPACE/llvm-install/bin/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 -mllvm
> -treat-scalable-fixed-error-as-warning=false -DNDEBUG"
> -DCMAKE_CXX_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve
> -msve-vector-bits=scalable -mllvm -scalable-vectorization=preferred -mllvm
> -treat-scalable-fixed-error-as-warning=false -DNDEBUG"
> -DCMAKE_Fortran_FLAGS_RELEASE="-O3 -ffast-math -march=armv8.4-a+sve
> -msve-vector-bits=scalable -mllvm -scalable-vectorization=preferred -mllvm
> -treat-scalable-fixed-error-as-warning=false -DNDEBUG"
> -DTEST_SUITE_FORTRAN=ON -DTEST_SUITE_SUBDIRS=Fujitsu
> "$\WORKSPACE/test/test-suite"
>
> We track this bug report under
> https://linaro.atlassian.net/browse/LLVM-1482. 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
> *
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/1317/artifact/artifacts/00-sumfiles/
> The full lists of regressions and improvements as well as configure and
> make commands are in
> *
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/1317/artifact/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
> *
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/1317/artifact/artifacts/sumfiles/xfails.xfail
>
> Fujitsu testsuite : https://github.com/fujitsu/compiler-test-suite/
>
> Current build :
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/1317/artifact/artifacts
> Reference build :
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/1316/artifact/artifacts
>
> Instruction to reproduce the build :
> https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/llvm/sha1/b3cba9be41bfa89bc0ec212706c6028a901e127a/tcwg_flang_test/main-aarch64-Ofast-sve_vla/reproduction_instructions.txt
>
> Full commit :
> https://github.com/llvm/llvm-project/commit/b3cba9be41bfa89bc0ec212706c6028a901e127a
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