Is this on the stable branch (master, gem5-20.0) or develop? I believe there are some related issues: https://gem5.atlassian.net/browse/GEM5-338 https://gem5.atlassian.net/browse/GEM5-732 https://gem5.atlassian.net/browse/GEM5-720
Some of those have been resolved and will be part of the 20.1 release (coming in a couple of weeks). Cheers, Jason On Wed, Sep 9, 2020 at 8:55 AM Shyam Murthy via gem5-users < [email protected]> wrote: > Hi, > > I was running a few applications on gem5 using the O3CPU model and X86 > ISA. I observed that gem5 reports BTB hits/lookups to be 0. All predicted > taken branches (direct jumps, conditional jumps predicted taken as well as > indirect jumps) consult with the indirect predictor and use up space in the > target cache (I'd expect the target cache is used only by indirect > branches). > I think the issue is that branches don't get classified into directControl > and indirectControl, causing the BTB to never get looked up. Is this > understanding of mine correct, or am I missing something? > > Thanks, > Shyam > _______________________________________________ > gem5-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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