Speed Impact experiment on GCJ

Andrew Pinski pinskia@physics.uc.edu
Wed Feb 15 19:11:00 GMT 2006


> 
> > 
> > >>>>> "Andrew" == Andrew Haley <aph@redhat.com> writes:
> > 
> > Andrew> For what it's worth, I was quite suprised that gcj didn't spot the
> > Andrew> same opportunity.  Maybe this is part of the value range propagation
> > Andrew> optimizations that aren't yet in core gcc.
> > 
> > Yeah, I'm surprised too.
> > Maybe file it in bugzilla for later testing?
> 
> Huh?  It does produce good code on the mainline
One more data point, ppc-darwin mainline:
__ZN4Impl4pingEJiii:
LFB3:
        mullw. r5,r5,r4
        li r3,0
        ble- cr0,L6
L4:
        mr r3,r5
L6:
        blr


Thanks,
Andrew Pinski



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