Cleaned up C++

[John Colvin via Digitalmars-d]

On Wednesday, 22 April 2015 at 21:59:48 UTC, Ola Fosheim Grøstad 
wrote:
> On Wednesday, 22 April 2015 at 20:36:12 UTC, John Colvin wrote:
>> Is it even possible to contrive a case where
>> 1) The default initialisation stores are technically dead and
>> 2) Modern compilers can't tell they are dead and elide them and
>> 3) Doing the initialisation has a significant performance 
>> impact?
>>
>> The boring example is "extra code causes instruction cache 
>> misses".
>
> Allocation of large arrays.

That doesn't really answer the question without some more 
context. Can you give a specific example where all 3 points are 
satisfied?