On Sat, 07 Jul 2012 21:58:04 -0700, Alex Rønne Petersen <[email protected]>
wrote:
On 08-07-2012 06:44, Adam Wilson wrote:
On Sat, 07 Jul 2012 21:13:35 -0700, Jonathan M Davis
<[email protected]> wrote:
On Saturday, July 07, 2012 20:26:56 Adam Wilson wrote:
On Sat, 07 Jul 2012 19:33:22 -0700, Andrei Alexandrescu
<[email protected]> wrote:
> On 7/7/12 8:29 PM, Adam Wilson wrote:
>> Sure they complain, but they would complain harder if the
generated code
>> was sub-optimal or had bugs in it. And I imagine that multiple hour
>> build times are more the exception than rule even in C++, my
>> understanding is that all 50mloc of Windows can compile overnight
using
>> distributed compiling. Essentially, my argument is that for
business
>> compilation time is something that can be attacked with money,
where
>> code generation and perf bugs are not.
>
> I'm sorry, but I think you got that precisely backwards.
>
> Andrei
Why is that?
Well, considering that the general trend over the last ten years has
been to
move to languages which focus on programmer productivity (including
compilation speed) over those which focus on speed of execution,
there's a
definite argument that programmers generally prefer stuff that makes
programming
easier and faster over stuff that makes the program faster. There are
obviously
exceptions, and there are some signs of things shifting (due to mobile
and
whatnot), but that's the way that things have been trending for over a
decade.
- Jonathan M Davis
I won't argue with this at all, I use C# after all. But there we shuffle
the "backend" off to the JIT, so compilation is really more a
translation to IR. IIRC this is how most of the popular productivity
languages did it (Java, .NET, etc.).
It'd be an interesting research project to modify LDC to output IR only
and run the IR later on an LLVM based VM and then see what kind of
compile times you get...
It would be kind of useless in practice, unfortunately. LLVM IR is very
unsuited for VM use:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2011-October/043719.html
Ahh, well maybe we'll have to use MCI, since I hear that the D.NET project
is quite dead.
--
Adam Wilson
IRC: LightBender
Project Coordinator
The Horizon Project
http://www.thehorizonproject.org/
