[Bug gas/20046] x86 feature request: build an instruction including rex and modr/m

[hpa at zytor dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20046

--- Comment #5 from hpa at zytor dot com <hpa at zytor dot com> ---
x87 registers use a different encoding than modr/m; the upper two bits can be
something other than 11 for a register operation.  However, it seems very
unlikely that new x87 instructions will be added at this point, so I don't see
any significant reason to add pseudoops to synthesize x87 instructions.

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