dmd 1.070 and 2.055 release

[Timon Gehr]

On 09/08/2011 07:21 AM, Walter Bright wrote:
> By far, the most number of bug fixes ever!
>
> http://www.digitalmars.com/d/1.0/changelog.html
> http://ftp.digitalmars.com/dmd.1.070.zip
>
> http://www.digitalmars.com/d/2.0/changelog.html
> http://ftp.digitalmars.com/dmd.2.055.zip

Thanks! I have written a program that runs about twice as fast as before 
when compiled with DMD 2.055. What improvement could cause this?