[clang] [clang][DebugInfo] Set EnumKind based on enum_extensibility attribute (PR #126045)

[Michael Buch via cfe-commits]

Michael137 wrote:

The one test failure unrelated:
```
FAIL: Clang :: Tooling/clang-linker-wrapper-spirv-elf.cpp (20542 of 21851)
******************** TEST 'Clang :: Tooling/clang-linker-wrapper-spirv-elf.cpp' FAILED ********************
Exit Code: 1
Command Output (stderr):
--
RUN: at line 4: mkdir -p /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
+ mkdir -p /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
RUN: at line 5: cd /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
+ cd /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
RUN: at line 6: /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/bin/clang --driver-mode=g++ -fopenmp -fopenmp-targets=spirv64-intel -nogpulib -c -o /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_clang-linker-wrapper-spirv-elf.o /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/clang/test/Tooling/clang-linker-wrapper-spirv-elf.cpp
+ /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/bin/clang --driver-mode=g++ -fopenmp -fopenmp-targets=spirv64-intel -nogpulib -c -o /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_clang-linker-wrapper-spirv-elf.o /var/lib/buildkite-agent/builds/linux-56-59b8f5d88-qxq7w-1/llvm-project/github-pull-requests/clang/test/Tooling/clang-linker-wrapper-spirv-elf.cpp
clang: error: unable to execute command: Executable "llvm-spirv" doesn't exist!
clang: error: llvm-spirv command failed with exit code 1 (use -v to see invocation)
```

https://github.com/llvm/llvm-project/pull/126045