[Bug libfortran/59227] [4.9 regression] FAIL: gfortran.dg/erf_3.F90 -O0 execution test

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59227

--- Comment #9 from Andreas Schwab <schwab@linux-m68k.org> ---
Looks like inv2x2 is wrong in _gfortran_erfc_scaled_r16:

(gdb) i reg r42 r43
r42            0x0      0
r43            0x4007200000000000       4613691527636451328