Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324. The idea is to separate the notion of const from 'this variable can always be replaced with its initializer' in the frontend. To do that, I introduced Declaration::isSameAsInitializer, which is overridden in VarDeclaration to return false for constants that have a struct literal initializer. So {{{ const S s = S(5); void foo() { auto ps = &s; } // is no longer replaced by void foo() { auto ps = &(S(5)); } }}} To make taking the address of a struct constant with a struct-initializer outside of function scope possible, I made sure that AddrExp::optimize doesn't try to run the argument's optimization with WANTinterpret - that'd again replace the constant with a struct literal temporary.

module tangotests.asm1_1;

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

int main()
{
    int i = 12;
    int* ip = &i;
    printf("%d\n", i);
    version (D_InlineAsm_X86)
    {
        asm
        {
            mov ECX, ip;
            mov EAX, [ECX];
            add EAX, 8;
            mul EAX, EAX;
            mov [ECX], EAX;
        }
    }
    else version (D_InlineAsm_X86_64)
    {
        asm
        { 
            movq RCX, ip;
            mov EAX, [RCX];
            add EAX, 8;
            imul EAX, EAX;
            mov [RCX], EAX;
        }
    }
    printf("%d\n", i);
    assert(i == 400);
    return 0;
}