I'm working on a very tiny patch for GHC. The patch concerns the LLVM code generator, and I'd like to run the validate script. ./validate ignores mk/build.mk (which is probably correct) and it doesn't seem to be using the LLVM backend. LLVM tools are on the PATH; I'm working from the ghc-8.4 branch so I'm using LLVM 5.

Is it possible to validate with the LLVM backend? If not, what's considered a sufficiently thorough test? Apologies if I'm missing something obvious.

Thanks!

Travis