GCC DFA Instruction Scheduler

[Nathan Sidwell]

Sonawane Sachin Vijayku wrote:
> 
> Hi all,
>  I am doing my M.Tech from  IIT Bombay and some part of my Project is 
> related with GCC DFA based Instruction Scheduler.
> 
>  I am desparately look for an implementation of this DFA based 
> Instruction Scheduler in GCC, which has been suggested by a paper titled 
> as "The finite state automaton based pipeline hazard recognizer and 
> instruction scheduler in GCC" by Vladimir N. Markarov.
> 
>  Please let me know, which version of GCC has used this new model of 
> describing pipeline characteristics of which processors through .md file.
> and also "First cycle multipass Instruction Scheduling" suggested in the 
> same paper has been implemented or not.

genautomata.c.  Grep the .md files for define_automaton to see which cpus
support it.

I can't recall when it went in, some time in 2000?  The gcc release notes
of the version that first contained it will mention it.

nathan
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