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Re: [patch] Lno branch merge part 2 -- rtl level invariant motion


Hello,

> On Thu, Jun 10, 2004 at 12:34:24AM +0200, Zdenek Dvorak wrote:
> > this patch adds rtl level invariant motion that should replace
> > the one in the old loop optimizer.  The optimization is of course
> > disabled by default for now (in addition to other reasons, you
> > cannot remove invariant motion from the old loop optimizer
> > without removing it completely).
> 
> Do we really need new options?

I want the optimizer to be usable, and still disabled by default; so
yes, I believe I need an option to control this.

> How many targets have these heuristics been tested on?

This piece of code I have tested it mostly on i686 (in sense that on
this architecture I checked whether it does not do something really
stupid).  I believe other people looked on the code produced on ppc.

Lno branch bootstraps on ia64 and x86_64 as well, but I haven't checked
the produced code there.

Zdenek


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