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Re: [cfg-branch] improved Software Trace Cache


> > > > I guess it is not worthwhile - if you duplicate small BB you may save
> > > > considerable portion of time, if you duplicate large BB, the cost of branch
> > > > saved is tiny compared to the block itself.
> > > 
> > > Now we are not duplicating large blocks.
> > 
> > There's a bug in copy_bb_p, I'm solving it right now.
> 
> Fixed (sometimes it did not duplicate when I wanted to duplicate).
> Bootstrapped on i386.
> 
> 
> 2001-12-09  Josef Zlomek  <zlomek@matfyz.cz>
> 
> 	* bb-reorder.c: improved Software Trace Cache with duplication of basic
> 	blocks.
> 	* cfglayout.h: Added elements 'duplicated' and 'original' to struct
> 	reorder_block_def.
> 	* Makefile.in: Added dependencies on fibheap.h.

Thanks.  Andreas has benchmarked it and as we are in the possitive numbers, I
am installing it to the cfg-branch with minor tweek concerning the "original"
block handling.

I now set it in the cfg_layout_duplicate_bb so it can be used for debug dumps.

Honza


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