[clang] [compiler-rt] [lldb] [llvm] Add ARMv8-M and ARMv8.1-M support for Darwin (PR #195184)

Thu Apr 30 21:21:01 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-x86_64-windows` running on `minipc-ryzen-win` while building `clang,compiler-rt,lldb,llvm` at step 7 "test-build-unified-tree-check-flang".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/166/builds/8822

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

```
Step 7 (test-build-unified-tree-check-flang) failure: test (failure)
...
42.044 [39/6/937] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\CommandTest.cpp.obj
42.141 [38/6/938] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\CharacterTest.cpp.obj
42.234 [37/6/939] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\DerivedTest.cpp.obj
42.283 [36/6/940] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\IntrinsicsTest.cpp.obj
42.361 [35/6/941] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\NumericTest.cpp.obj
42.451 [34/6/942] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\RaggedTest.cpp.obj
42.503 [33/6/943] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\ReductionTest.cpp.obj
42.575 [32/6/944] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\StopTest.cpp.obj
42.671 [31/6/945] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\Builder\Runtime\TransformationalTest.cpp.obj
42.706 [30/6/946] Linking CXX executable bin\tco.exe
FAILED: [code=4294967295] bin/tco.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\flang\tools\tco\CMakeFiles\tco.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\tco.rsp  /out:bin\tco.exe /implib:lib\tco.lib /pdb:bin\tco.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && cd ."
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\tco.rsp /out:bin\tco.exe /implib:lib\tco.lib /pdb:bin\tco.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

42.712 [30/5/947] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\FIRCallInterfaceTest.cpp.obj
42.747 [30/4/948] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\FIRContextTest.cpp.obj
42.866 [30/3/949] Building CXX object tools\flang\unittests\Optimizer\CMakeFiles\FlangOptimizerTests.dir\FIRTypesTest.cpp.obj
44.215 [30/2/950] Linking CXX executable bin\bbc.exe
FAILED: [code=4294967295] bin/bbc.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\flang\tools\bbc\CMakeFiles\bbc.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\bbc.rsp  /out:bin\bbc.exe /implib:lib\bbc.lib /pdb:bin\bbc.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && cd ."
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\bbc.rsp /out:bin\bbc.exe /implib:lib\bbc.lib /pdb:bin\bbc.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

46.430 [30/1/951] Linking CXX executable bin\flang.exe
FAILED: [code=4294967295] bin/flang.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\flang\tools\flang-driver\CMakeFiles\flang.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp  /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && C:\Windows\system32\cmd.exe /C "cd /D C:\buildbot\flang-x86_64-windows\build\tools\flang\tools\flang-driver && "C:\Program Files\CMake\bin\cmake.exe" -E copy C:/buildbot/flang-x86_64-windows/build/bin/flang.exe C:/buildbot/flang-x86_64-windows/build/./bin/flang-new.exe""
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

ninja: build stopped: subcommand failed.
Cache directory:       C:\Users\buildbot-worker\AppData\Local\ccache
Config file:           C:\Users\buildbot-worker\AppData\Local\ccache\ccache.conf
Directory config file:
System config file:    C:\ProgramData\ccache\ccache.conf
Stats updated:         04/30/26 21:20:15
Cacheable calls:          30 /  30 (100.0%)
  Hits:                   30 /  30 (100.0%)
    Direct:               30 /  30 (100.0%)
    Preprocessed:          0 /  30 ( 0.00%)
  Misses:                  0 /  30 ( 0.00%)
Successful lookups:
  Direct:                 30 /  30 (100.0%)
  Preprocessed:            0
Local storage:
  Cache size (GB):       5.0 / 5.0 (99.72%)
  Files:               18333
  Hits:                   30 /  30 (100.0%)
  Misses:                  0 /  30 ( 0.00%)
Step 8 (test-build-unified-tree-check-flang-rt) failure: test (failure)
...
3.212 [12/6/12] Generating ../../bin/llvm-ranlib.exe
3.248 [11/6/13] Linking CXX executable bin\llvm-nm.exe
3.303 [10/6/14] Generating ../../bin/llvm-lib.exe
3.335 [9/6/15] Linking CXX executable bin\llvm-objdump.exe
4.711 [8/6/16] Linking CXX executable bin\llvm-jitlink.exe
5.697 [7/6/17] Linking CXX executable bin\sancov.exe
6.127 [7/5/18] Linking CXX executable bin\lli.exe
6.339 [7/4/19] Linking CXX executable bin\llvm-lto.exe
7.235 [7/3/20] Linking CXX executable bin\opt.exe
7.462 [7/2/21] Linking CXX executable bin\flang.exe
FAILED: [code=4294967295] bin/flang.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\flang\tools\flang-driver\CMakeFiles\flang.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp  /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && C:\Windows\system32\cmd.exe /C "cd /D C:\buildbot\flang-x86_64-windows\build\tools\flang\tools\flang-driver && "C:\Program Files\CMake\bin\cmake.exe" -E copy C:/buildbot/flang-x86_64-windows/build/bin/flang.exe C:/buildbot/flang-x86_64-windows/build/./bin/flang-new.exe""
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

10.424 [7/1/22] Linking CXX executable bin\clang.exe
ninja: build stopped: subcommand failed.
Cache directory:       C:\Users\buildbot-worker\AppData\Local\ccache
Config file:           C:\Users\buildbot-worker\AppData\Local\ccache\ccache.conf
Directory config file:
System config file:    C:\ProgramData\ccache\ccache.conf
Stats updated:         04/30/26 21:20:20
Local storage:
  Cache size (GB):       5.0 / 5.0 (99.72%)
  Files:               18333
  Hits:                    0
  Misses:                  0
  Reads:                   0
  Writes:                  0
Step 9 (install-build-unified-treeall) failure: build (failure)
...
4.975 [4/6/124] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/enable_execute_stack.c.obj
5.030 [3/6/125] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/extendbfsf2.c.obj
5.048 [2/6/126] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/truncdfbf2.c.obj
5.094 [2/5/127] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/truncxfbf2.c.obj
5.096 [2/4/128] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/trunctfbf2.c.obj
5.149 [2/3/129] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/truncsfbf2.c.obj
5.864 [2/2/130] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/emutls.c.obj
6.250 [2/1/131] Building C object CMakeFiles/clang_rt.builtins-x86_64.dir/cpu_model/x86.c.obj
6.303 [1/1/132] Linking C static library C:\buildbot\flang-x86_64-windows\build\lib\clang\23\lib\windows\clang_rt.builtins-x86_64.lib
8.727 [70/6/39] Linking CXX executable bin\flang.exe
FAILED: [code=4294967295] bin/flang.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\flang\tools\flang-driver\CMakeFiles\flang.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp  /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && C:\Windows\system32\cmd.exe /C "cd /D C:\buildbot\flang-x86_64-windows\build\tools\flang\tools\flang-driver && "C:\Program Files\CMake\bin\cmake.exe" -E copy C:/buildbot/flang-x86_64-windows/build/bin/flang.exe C:/buildbot/flang-x86_64-windows/build/./bin/flang-new.exe""
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\flang.rsp /out:bin\flang.exe /implib:lib\flang.lib /pdb:bin\flang.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:

MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

9.207 [70/5/40] Linking CXX shared library bin\libclang.dll
10.015 [69/3/42] Linking CXX executable bin\mlir-lsp-server.exe
FAILED: [code=4294967295] bin/mlir-lsp-server.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\mlir\tools\mlir-lsp-server\CMakeFiles\mlir-lsp-server.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\mlir-lsp-server.rsp  /out:bin\mlir-lsp-server.exe /implib:lib\mlir-lsp-server.lib /pdb:bin\mlir-lsp-server.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && cd ."
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\mlir-lsp-server.rsp /out:bin\mlir-lsp-server.exe /implib:lib\mlir-lsp-server.lib /pdb:bin\mlir-lsp-server.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

14.003 [69/2/43] Linking CXX executable bin\mlir-opt.exe
FAILED: [code=4294967295] bin/mlir-opt.exe 
C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --msvc-ver=1944 --intdir=tools\mlir\tools\mlir-opt\CMakeFiles\mlir-opt.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100261~1.0\x64\mt.exe --manifests  -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\mlir-opt.rsp  /out:bin\mlir-opt.exe /implib:lib\mlir-opt.lib /pdb:bin\mlir-opt.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 && cd ."
LINK: command "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe /nologo @CMakeFiles\mlir-opt.rsp /out:bin\mlir-opt.exe /implib:lib\mlir-opt.lib /pdb:bin\mlir-opt.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:10000000 /MANIFEST:EMBED,ID=1" failed (exit code 1243) with the following output:
MLIRNVVMDialect.lib(NVVMDialect.cpp.obj) : fatal error LNK1243: invalid or corrupt file: COMDAT section 0x8314 associated with following section 0x40040BD

17.654 [69/1/44] Generating export list for LLVM-C
ninja: build stopped: subcommand failed.
Cache directory:       C:\Users\buildbot-worker\AppData\Local\ccache
Config file:           C:\Users\buildbot-worker\AppData\Local\ccache\ccache.conf
Directory config file:
System config file:    C:\ProgramData\ccache\ccache.conf
Stats updated:         04/30/26 21:20:31
Local storage:
  Cache size (GB):       5.0 / 5.0 (99.72%)
  Files:               18333
  Hits:                    0
  Misses:                  0
  Reads:                   0
  Writes:                  0

```

</details>

https://github.com/llvm/llvm-project/pull/195184