DMD 0.177 release

[Jarrett Billingsley]

"Lutger" <lutger.blijdestijn at gmail.com> wrote in message 
news:elmkes$1ult$1 at digitaldaemon.com...

> Can you explain why? 'Rely' in this context doesn't mean the language is 
> broken right? It just means it is slower, but isn't that expected from a 
> non-optimizing compiler anyway?

Yes, I guess that's true.  But if a simple addition i.e.

x = a + b;

Compiled to

mov _TEMP1, a
mov _TEMP2, b
add _TEMP1, _TEMP2
mov x, _TEMP1

Instead of

mov x, a
add x, b

It'd still be semantically correct, but would it make sense?

In the same way, I don't see why the compiler should introduce a needless 
bit-copy of a (possibly large) structure which can *always* be optimized out 
when it would be much simpler to skip the bit-copy in the first place.

It's an optimization which can always be performed, and so should not be an 
optimization.  It should be the default behavior.