DMD backend quality (Was: Re: DIP 1031--Deprecate Brace-Style Struct Initializers--Community Review Round 1 Discussion)

[Stefan Koch]

On Thursday, 20 February 2020 at 21:04:16 UTC, Walter Bright 
wrote:
> On 2/20/2020 12:35 PM, Dibyendu Majumdar wrote:
>> I used to think that the backend should be abandoned in favour 
>> of LLVM but no more. I think it is worth having a fast 
>> backend. I was surprised how quickly dmd can be compiled 
>> compared to LLVM.
>> 
>> It is excellent for a language designer to have full control 
>> over the implementation too as it helps play with ideas 
>> without having to fight with external libraries.
>
> I might add that having a fast edit-compile-debug loop is 
> indeed transformative. Sometimes tracking down a problem may 
> require hundreds of times through that loop.
>
> On my dev machine, a full debug build of dmd takes 43 seconds.
>
> An incremental build (one file change) takes 9 seconds.
>
> (The build compiler is a Windows 32 bit dmd built with dmd.)

43 seconds?
Are you still on an hdd?