llvm-ir

While the test_suite presented in #589 does work, it is still pretty simple and can be improved and enhanced.

• Add tests for gnutils and coreutils.
• Add necessary utilities so more complex programs can be compiled from sources.
• Integrate CMake, so one could write something like make validate and the subset of test that is deemed necessary (for example everything with min t

• (AMD64 bc5ad 3 (BYTES 0f 57 ff) XORPS_XMMxud_XMMxud (WRITE_OP (REG_256 YMM7)) (READ_OP (REG_256 YMM7)) (READ_OP (REG_128 XMM7)))
• (AMD64 bf2ac 4 (BYTES 66 0f 57 c9) XORPD_XMMxuq_XMMxuq (WRITE_OP (REG_256 YMM1)) (READ_OP (REG_256 YMM1)) (READ_OP (REG_128 XMM1)))
• `(AMD64 f6c89 4 (BYTES 41 0f 54 d2) ANDPS_XMMxud_XMMxud (WRITE_OP (REG_256 YMM2)) (READ_OP (REG_256 YMM2)) (READ

Seems like this is the culprit and you need a x86_64-linux (cross)-toolchain for the tests.

setupCompilerEnvironmentPhase
Build with /nix/store/n5z7zr3jl1k96wcrrjqlc5bxdhjc1i69-ghc-8.10.4.
unpacking sources
unpacking source archive /nix/store/2xmdp36vnlr5kpxw3wi4lp

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