[Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code for -mtune=core2

bonzini at gnu dot org gcc-bugzilla@gcc.gnu.org
Wed Oct 29 07:18:00 GMT 2008



------- Comment #2 from bonzini at gnu dot org  2008-10-29 07:17 -------
Subject: Re:  [4.4 Regression] IRA generates slower
 code for -mtune=core2

hjl dot tools at gmail dot com wrote:
> ------- Comment #1 from hjl dot tools at gmail dot com  2008-10-29 05:44 -------
> It looks like the cost of loading/storing FP values aren't appropriate for
> Core 2. With this patch:

Good.  Is regmove still helping (which would be the wrong thing to do,
but gives a data point)?

Paolo


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948



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