Jarrett Billingsley:
> I thought I remember seeing a runtime function to allocate an array without initializing it.. maybe it's just not used yet?

Splitting the array allocation and the memset32, a successive optimization pass of the compiles may be able to simplify code like:

auto a = new int[n];
a[] = 10;
a[] = 20;

In a single allocation + one memset32, instead of allocation + 3 memsets32.
But in most situations this isn't a critical optimization, so it's low priority.

Bye,
bearophile

Walter Bright wrote:
> Jason House wrote:
>> D will always initialize variables unless you explicitly tell it not to. (although a smart compiler may optimize certain cases)
> 
> Dead assignment elimination is compiler technology from the 70's !

Although the technology didn't make it to the PC until 1985 with the release of Datalight Optimum C.

But still, that's 24 years ago!

On Tue, 02 Jun 2009 23:20:06 +0400, Walter Bright <newshound1@digitalmars.com> wrote:

> Walter Bright wrote:
>> Jason House wrote:
>>> D will always initialize variables unless you explicitly tell it not to. (although a smart compiler may optimize certain cases)
>>  Dead assignment elimination is compiler technology from the 70's !
>
> Although the technology didn't make it to the PC until 1985 with the release of Datalight Optimum C.
>

Which became Zortech C++ which became Symantec C++?

> But still, that's 24 years ago!

Denis Koroskin wrote:
> On Tue, 02 Jun 2009 23:20:06 +0400, Walter Bright <newshound1@digitalmars.com> wrote:
>> Although the technology didn't make it to the PC until 1985 with the  release of Datalight Optimum C.
> Which became Zortech C++ which became Symantec C++?

Yes.