Remove an old workaround that was kept around for ABI-compatibility on x86-64 between different LLVM versions. This means LLVM r67588 is required if you want to compile for x86-64, otherwise the backend will assert when you try to return e.g. struct { int i; char c; } from a function. (In particular, this is no longer compatible with LLVM 2.5) It also means that any code returning small structs on x86-64 will probably need to be recompiled in order to be linkable to code compiled with this change.

module enum3;

enum GE : ushort
{
    A,B,C
}

void main()
{
    GE e = GE.B;
    size_t s = GE.sizeof;
    assert(e == 1);
    assert(e.sizeof == s);
    assert(s == 2);
}