I'm getting a similar bug trying to compile "the language machine"  on GDC-0.24
MingW32.
src/lm/element.d: In member function `toBool':
src/lm/element.d:205: error: unrecognizable insn:
(insn 14 13 15 0 (set (reg:DF 62)
        (const_int 0 [0x0])) -1 (nil)
    (nil))