gdc or ldc for faster programs?

[Johan]

On Tuesday, 25 January 2022 at 19:52:17 UTC, Ali Çehreli wrote:
>
> I am using compilers installed by Manjaro Linux's package 
> system:
>
> ldc: LDC - the LLVM D compiler (1.28.0):
>   based on DMD v2.098.0 and LLVM 13.0.0
>
> gdc: dc (GCC) 11.1.0
>
> dmd: DMD64 D Compiler v2.098.1

What phobos version is gdc using?

-Johan