On Thu, 31 Jan 2019 at 21:10, Richard Henderson <richard.hender...@linaro.org> wrote: > > Assuming that the ISA clearly describes how to determine > the length of the instruction, and the ISA has a reasonable > maximum instruction length, the input to the decoder can be > right-justified in an appropriate insn word. > > This is not 100% convenient, as out-of-line %fields are > numbered relative to the maximum instruction length, but > this appears to still be usable.
Prompted by a query on IRC I noticed that this patch from a few years back added variable-insn-width support to decodetree, including a new commandline argument --varinsnwidth, but we don't document how to use it in docs/devel/decodetree.rst. In fact decodetree.rst doesn't document decodetree.py's commandline options at all. Could you maybe write up a docs patch to describe them? thanks -- PMM
