[llvm] [llubi][NFC] Fix build with old GCC (PR #195327)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-x86_64-windows` running on `minipc-ryzen-win` while building `llvm` at step 6 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/166/builds/8845

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

```
Step 6 (build-unified-tree) failure: build (failure)
...
-- For x86_64 builtins preferring x86_64/floatdidf.c to floatdidf.c
-- For x86_64 builtins preferring x86_64/floatdisf.c to floatdisf.c
-- Configuring done (0.6s)
-- Generating done (0.2s)
-- Build files have been written to: C:/buildbot/flang-x86_64-windows/build/runtimes/builtins-bins
ninja: no work to do.
39.104 [82/6/69] Linking CXX shared library bin\libclang.dll
39.368 [80/6/70] No install step for 'builtins'
39.494 [79/6/72] Completed 'builtins'
45.854 [78/6/73] 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 0) with the following output:


  Version 14.44.35224.0



  ExceptionCode            = C0000005

  ExceptionFlags           = 00000000

  ExceptionAddress         = 00007FF70AF405A4 (00007FF70AF10000) "C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\link.exe"

  NumberParameters         = 00000002

  ExceptionInformation[ 0] = 0

  ExceptionInformation[ 1] = FFFFFFFFFFFFFFFF



CONTEXT:

  Rax    = 4000000000000  R8     = 1C9D98C9938

  Rbx    = AAAAAAAAAAAAAAAB  R9     = 0

  Rcx    = 4000000000000  R10    = 1CA0299D138

  Rdx    = 512  R11    = 513

  Rsp    = 3B469FC2B0  R12    = 0

  Rbp    = 3B469FC3B0  E13    = 1C9D8866B00

  Rsi    = A64E  R14    = 3A64


```

</details>

https://github.com/llvm/llvm-project/pull/195327