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.

// this head contains stuff used by all the IR

#ifndef LDC_IR_IR_H
#define LDC_IR_IR_H

#include <deque>

#include "ir/irforw.h"
#include "root.h"

struct IRState;
struct IrFunction;

struct IrBase : Object
{
    virtual ~IrBase() {}
};

class Ir
{
public:
    Ir();

    void setState(IRState* p)   { irs = p; }
    IRState* getState()         { return irs; }

    void addFunctionBody(IrFunction* f);
    void emitFunctionBodies();

private:
    IRState* irs;

    std::deque<IrFunction*> functionbodies;
};

#endif