2007/6/1, Frank Schaefer <[EMAIL PROTECTED]> wrote:
> To obtain 200-250% in speed gain won't be possible for this GCC
> optimizing compiler because of http://en.wikipedia.org/wiki/Amdahl%27s_law
Amdahl's Law talks about paralellism. That is not the case here.
He apply a different approach for lexical analysis as mentioned
above. If you talk about the influence of a new lexer to the
speed of the whole compiler, I would aggree that the a speed up
factor 2 is not possible if lexical analysis constitutes less
than 50% of the total computation effort (simple math).
Amdahl's Law talks about sequential improvement too.
http://en.wikipedia.org/wiki/Amdahl%27s_law#Speedup_in_a_sequential_program
