Formal annotating Code for Optimizations?

[Walter Bright]

JAnderson wrote:
> MSVC++ 2005 has this profile that you can run on the code and then it 
> will use that to optimize the code to use the most common paths.  I'm 
> not sure if it also optimizes IF statements.  I know it optimizes 
> functions layout to be more cache friendly.

The dmd profiler does this too. It emits a file, trace.def, which 
optimally orders functions based on the runtime profile, which you can 
then use as input to optlink.