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 mini.nested13;

extern(C) int printf(char*, ...);

void main()
{
    int var = 2;

    void exec(void delegate() dg)
    {
        printf("var = %d\n", var);
        dg();
    }

    void foo()
    {
        printf("var = %d\n", var);
        assert(var == 5);
    }

    void bar()
    {
        printf("var = %d\n", var);
        var += 3;
        exec(&foo);
    }

    printf("var = %d\n", var);
    exec(&bar);

    return 0;
}