ddf1249842
Linux perf_events is not implemented in WSL1, skip the test that requires it. There is just a single test that requires perf_events. It fails under WSL1 with: ```sh env JITDUMPDIR=/home/meinersbur/build/llvm-project/release/test/ExecutionEngine/JITLink/x86-64/Output/ELF_perf.s.tmp /home/meinersbur/build/llvm-project/release/bin/llvm-jitlink -perf-support /home/meinersbur/build/llvm-project/release/test/ExecutionEngine/JITLink/x86-64/Output/ELF_perf.s.tmp/ELF_x86-64_perf.o llvm-jitlink error: PerfState not initialized ``` WSL environment detection logic follows https://github.com/scivision/detect-windows-subsystem-for-linux/blob/main/is_wsl.py Also see WSL issue: https://github.com/microsoft/WSL/issues/4595