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Re: [RFA] expand from SSA form (1/2)


Hi,


On Tue, 2009-04-28 at 02:23 +0200, Michael Matz wrote:
> Hi David,
> 
> On Mon, 27 Apr 2009, David Edelsohn wrote:
> 
> > gcc.c-torture/execute/20030916-1.c is a new testsuite failure.
> 
> Excellent! (or not, depending on the p.o.v. :-) ).  I'll try to analyze 
> this.  I feared already that this wouldn't help powerpc, but this most 
> probably is some confusion in the RTL move instructions generated on the 
> edges.  No doubt I overlooked some target peculiarity in generating them 
> :-(

Speaking about powerpc, i've tracked down a 19% degradation on cpu2000's
32-bit sixtrack and found that revision 146817 caused/revealed it.

I'll have more details on it soon.

Regards,
Luis


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