Re: [google] Increase hotness count fraction

2011-08-25 Thread Mark Heffernan
On Thu, Aug 25, 2011 at 6:49 AM, Ramana Radhakrishnan wrote: > I know this is intended for the google branches but shouldn't such a > change be in the x86_64 backend rather than such a general change to > params.def . I wouldn't consider this a backend-specific change. The parameter generally af

Re: [google] Increase hotness count fraction

2011-08-25 Thread Ramana Radhakrishnan
On 24 August 2011 22:43, Mark Heffernan wrote: > This patch bumps up the parameter 'hot-bb-count-fraction' from 1 > to 4.  This results in about a 0.5% geomean performance > improvement across internal benchmarks for x86-64 LIPO.  The parameter > change effectively increases the number of

Re: [google] Increase hotness count fraction

2011-08-24 Thread Xinliang David Li
Good for google branches. Need to measure the performance and size impact on SPEC2k/06 with this patch and the previous hotcaller patch for trunk. thanks, David On Wed, Aug 24, 2011 at 2:43 PM, Mark Heffernan wrote: > This patch bumps up the parameter 'hot-bb-count-fraction' from 1 > to 40

[google] Increase hotness count fraction

2011-08-24 Thread Mark Heffernan
This patch bumps up the parameter 'hot-bb-count-fraction' from 1 to 4. This results in about a 0.5% geomean performance improvement across internal benchmarks for x86-64 LIPO. The parameter change effectively increases the number of functions/callsites which are considered hot. The perfo