The ROCm installation directory may be another
directory, llvm/ inside the build directory.
Reviewed By: yaxunl
Differential Revision: https://reviews.llvm.org/D100045
// SPACK: ROCm installation search path (Spack 4.0.0): [[DIR:.*]]
// SPACK: ROCm installation search path: [[CLANG:.*]]
-// SPACK: ROCm installation search path: [[CLANG]]/lib/clang/{{[0-9.]+}}
+// SPACK: ROCm installation search path: [[CLANG]]/{{(llvm/)?}}lib/clang/{{[0-9.]+}}
// SPACK: ROCm installation search path: /opt/rocm
// SPACK: InstalledDir: [[DIR]]/llvm-amdgpu-4.0.0-ieagcs7inf7runpyfvepqkurasoglq4z/bin
// SPACK: Found HIP installation: [[DIR]]/hip-4.0.0-5f63slrursbrvfe2txrrjkynbsywsob5, version 4.0.20214-a2917cd