[llvm] [llvm] Add managarm support (PR #138854)

Thu May 8 19:53:52 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-arm64-windows-msvc` running on `linaro-armv8-windows-msvc-01` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/207/builds/1260

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
782.650 [1698/10/4873] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/clang-driver.cpp.obj
782.769 [1697/10/4874] Building CXX object tools/flang/lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/SimplifyFIROperations.cpp.obj
782.928 [1696/10/4875] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1gen_reproducer_main.cpp.obj
783.020 [1695/10/4876] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1as_main.cpp.obj
783.361 [1694/10/4877] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.obj
783.649 [1693/10/4878] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.obj
786.399 [1692/10/4879] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/attr.cpp.obj
788.389 [1691/10/4880] Building CXX object tools/flang/lib/Lower/CMakeFiles/FortranLower.dir/cmake_pch.cxx.obj
789.413 [1690/10/4881] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-arithmeticif.cpp.obj
793.783 [1689/10/4882] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-acc-structure.cpp.obj
FAILED: tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-acc-structure.cpp.obj 
ccache C:\Users\tcwg\scoop\apps\llvm-arm64\current\bin\clang-cl.exe  /nologo -TP -DFLANG_INCLUDE_TESTS=1 -DGTEST_HAS_RTTI=0 -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_GLIBCXX_ASSERTIONS -D_HAS_EXCEPTIONS=0 -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/flang/lib/Semantics -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/flang/include -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/include -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/include -IC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/llvm/include -imsvcC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/flang/../mlir/include -imsvcC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/mlir/include -imsvcC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/clang/include -imsvcC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/llvm/../clang/include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /bigobj /permissive- -Werror=unguarded-availability-new /W4  -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported /Gw -Wno-deprecated-copy -Wno-string-conversion -Wno-ctad-maybe-unsupported -Xclang -fno-pch-timestamp /O2 /Ob2  -std:c++17 -MD  /EHs-c- /GR- -UNDEBUG /YuC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/cmake_pch.hxx /FpC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/./cmake_pch.cxx.pch /FIC:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/cmake_pch.hxx /showIncludes /Fotools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-acc-structure.cpp.obj /Fdtools\flang\lib\Semantics\CMakeFiles\FortranSemantics.dir\FortranSemantics.pdb -c -- C:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/llvm-project/flang/lib/Semantics/check-acc-structure.cpp
fatal error: file 'C:\Users\tcwg\llvm-worker\flang-arm64-windows-msvc\llvm-project\llvm\include\llvm\ADT\bit.h' has been modified since the precompiled header 'C:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/./cmake_pch.cxx.pch' was built: size changed (was 12384, now 12409)
note: please rebuild precompiled header 'C:/Users/tcwg/llvm-worker/flang-arm64-windows-msvc/build/tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/./cmake_pch.cxx.pch'
1 error generated.
797.670 [1689/9/4883] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-allocate.cpp.obj
810.547 [1689/8/4884] Building CXX object tools/flang/lib/Evaluate/CMakeFiles/FortranEvaluate.dir/tools.cpp.obj
816.252 [1689/7/4885] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/canonicalize-do.cpp.obj
818.501 [1689/6/4886] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/canonicalize-omp.cpp.obj
818.839 [1689/5/4887] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/canonicalize-directives.cpp.obj
819.327 [1689/4/4888] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/canonicalize-acc.cpp.obj
835.250 [1689/3/4889] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/assignment.cpp.obj
837.493 [1689/2/4890] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-case.cpp.obj
854.101 [1689/1/4891] Building CXX object tools/flang/lib/Semantics/CMakeFiles/FortranSemantics.dir/check-call.cpp.obj
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/138854