Building Windows x64 tiered in Visual Studio gives me:

1> jvmciRuntime.cpp
1>..\..\src\share\vm\jvmci\commandLineFlagConstraintsJVMCI.cpp(32): error C2065: 'EnableJVMCI' : undeclared identifier
1>..\..\src\share\vm\jvmci\commandLineFlagConstraintsJVMCI.cpp(43): error C2065: 'EnableJVMCI' : undeclared identifier
1>c:\source\jdk9-rt\hotspot\src\share\vm\jvmci/jvmciCompiler.hpp(49): error C2065: 'EnableJVMCI' : undeclared identifier (..\..\src\cpu\x86\vm\jvmciCodeInstaller_x86.cpp)
1>c:\source\jdk9-rt\hotspot\src\share\vm\jvmci/jvmciJavaClasses.hpp(376): error C2039: 'Architecture_klass' : is not a member of 'SystemDictionary' (..\..\src\cpu\x86\vm\jvmciCodeInstaller_x86.cpp)
1> c:\source\jdk9-rt\hotspot\src\share\vm\classfile/systemDictionary.hpp(212) : see declaration of 'SystemDictionary'
1>c:\source\jdk9-rt\hotspot\src\share\vm\jvmci/jvmciJavaClasses.hpp(376): error C3861: 'Architecture_klass': identifier not found (..\..\src\cpu\x86\vm\jvmciCodeInstaller_x86.cpp)
1> c:\source\jdk9-rt\hotspot\src\share\vm\classfile/systemDictionary.hpp(212) : see declaration of 'SystemDictionary'
1>c:\source\jdk9-rt\hotspot\src\share\vm\jvmci/jvmciJavaClasses.hpp(376): error C2039: 'Architecture_klass' : is not a member of 'SystemDictionary' (..\..\src\share\vm\jvmci\jvmciJavaClasses.cpp)
1> c:\source\jdk9-rt\hotspot\src\share\vm\classfile/systemDictionary.hpp(212) : see declaration of 'SystemDictionary'

building only C1 results in:

1> sharedRuntime_x86_64.cpp
1>..\..\src\cpu\x86\vm\sharedRuntime_x86_64.cpp(328): error C2065: 'save_vectors' : undeclared identifier