LDC 0.12.0 has been released

[John Joyus]

On 10/23/2013 02:26 PM, Kai Nacke wrote:
> On Wednesday, 23 October 2013 at 17:45:50 UTC, John Joyus wrote:
>> On 10/22/2013 06:42 PM, David Nadlinger wrote:
>>> LDC 0.12.0, the LLVM-based D compiler, is available for download!
>>
>> Congratulations!
>>
>> I am a D enthusiast who reads more *about* D than actually learning
>> the language! ;)
>>
>> I have a question about LLVM.
>> When it comes to performance, do all LLVM-based languages eventually
>> match each other in speed for any given task, no matter it is Clang or D?
>>
>> I guess having or not having a GC (or different implementations of it
>> in different languages) will make a difference, but if we exclude GC,
>> will they be generating the same exact code for any given operation?
>
> It depends. If 2 language frontends generate the same IR then LLVM
> generates the same exact code. But in general you have different
> languages features therefore the IR differs, too. (C++ classes are not
> available in C, C++ multiple inheritance in not available in D, D slices
> are not available in C++, ...)
>
> If the generated IR is too "stupid" then even the LLVM optimizer can't
> help (e.g. look at the now solved issue #119
> https://github.com/ldc-developers/ldc/issues/119).
>
> And a functional language like Haskell is likely to generate totally
> different IR.
>
>>
>> In other words, though two different languages are based on LLVM, can
>> one of its binary exceed the other in speed?
>
> Yes.
>

Thanks Kai,
It's good to know that "smart" developers can develop better compilers 
with the same IR available to all.