Support false_elim #502
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Support false_elim #502
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I'm quite surprised we never needed this before. I found it useful to document that a particular branch is statically unreachable, via the use of false_elim. Some other parts of HACL* do:
which is slightly overkill, so I added support for false_elim, extracting as a regular call to KRML_ERROR, with a notice that the code was provably unreachable