ppc64 floating point usage [was Re: PPC64 Compiler bug !!]

Janis Johnson janis187@us.ibm.com
Fri Jun 13 22:19:00 GMT 2003


On Fri, Jun 13, 2003 at 04:02:25PM -0500, linas@austin.ibm.com wrote:
> Bird in hand vs. two in the bush.  We have Alan Modra's patch now, we
> don't have an acceptable -mno-implicit-float patch.
> 
> There is concern that Alan's patch will negatively impact performance
> of fp code.  Is there a way to unambiguously resolve this issue, or 
> at least resolve it to everyones satisfaction?  
> 
> How would one do this? Visually inspect generated fp code? Run 
> benchmarks? Which benchmarks? 

Try the floating point tests from SPEC CPU2000.

Janis



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