[ANNOUNCEMENT] llvm 3.8.1-1

OK that fixed my initial problem with 3.9.0
the next failure after that (with both 3.9.0 and 3.9.1) is

Scanning dependencies of target LLVMPasses
[ 64%] Building CXX object
CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o: too many sections (34877)
/tmp/ccTGhQkv.s: Assembler messages:
/tmp/ccTGhQkv.s: Fatal error: can't write
CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o: File too big

so I guess I'll look forward to your release, I guess 3.9.1 was just cut.