Decompiled programs are full of approximations and guesses, and generally can't be recompiled without manual tweaking of the source code.

For example, "mov eax, 0x0040137C"

Is is this an address or a numeric constant?

Should it be translated to:

1) var = 4199292;

2) var = &SomeGlobalVariable;

If you're lucky you might get a non-ambiguous answer from the relocation table embedded in your executable.

So you're probably better off writing a new backend for the Go compiler (a backend generating machine code, or C code).

The resulting program will have, by far, a lot less dangerous approximations.