I have pushed the following PR to address issues in my patch: 
https://github.com/llvm/llvm-project/pull/149703

I haven’t verified that it fixes your regression, will do that shortly.

Jonathan

> On 18 Jul 2025, at 20:40, [email protected] 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-22-init-340-ge8a891b0f9d2
>  | Author: Jonathan Cohen <[email protected]>
>  | Date:   Thu Jul 17 19:21:57 2025 +0300
>  | 
>  |     [AArch64][Machine-Combiner] Split gather patterns into neon regs to 
> multiple vectors (#142941)
>  |     
>  |     This changes optimizes gather-like sequences, where we load values
>  |     separately into lanes of a neon vector. Since each load has serial
>  |     dependency, when performing multiple i32 loads into a 128 bit vector 
> for example, it
>  | ... 3 lines of the commit log omitted.
> 
> Produces 4 regressions:
>  | 
>  | regressions.sum:
>  | Running test-suite:Fujitsu/Fortran/0631 ...
>  | FAIL: test-suite :: Fujitsu/Fortran/0631/Fujitsu-Fortran-0631_0110.test
>  | FAIL: test-suite :: Fujitsu/Fortran/0631/Fujitsu-Fortran-0631_0111.test
>  | Running test-suite:Fujitsu/Fortran/0640 ...
>  | FAIL: test-suite :: Fujitsu/Fortran/0640/Fujitsu-Fortran-0640_0074.test
>  | ... and 2 more
>  | # "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-1731. 
> 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
> * 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/2273/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/2273/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/2273/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/2273/artifact/artifacts
> Reference build : 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-Ofast-sve_vla-build/2272/artifact/artifacts
> 
> Instruction to reproduce the build : 
> https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/llvm/sha1/e8a891b0f9d2a742ac3904116aaec2c7c9231b24/tcwg_flang_test/main-aarch64-Ofast-sve_vla/reproduction_instructions.txt
> 
> Full commit : 
> https://github.com/llvm/llvm-project/commit/e8a891b0f9d2a742ac3904116aaec2c7c9231b24

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