https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104865

--- Comment #7 from Maciej W. Rozycki <macro at orcam dot me.uk> ---
Well, it's not clear to me whether the reserved operand as defined by the
VAX floating-point architecture ought be considered an sNaN given that
there is no qNaN.

Also a reserved operand causes a fault with any FP instruction, even data
moves (though one can move a reserved operand bit pattern with an integer
move of the right width, observing that there is a single register file
for both integer and FP arithmetic, and that of course FP operations can
be directly performed on memory as well).

In any case there's probably more than one bug here.

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