From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Earnshaw To: David Edelsohn Cc: Richard Henderson , "David S. Miller" , gcc@gcc.gnu.org, Richard.Earnshaw@arm.com Subject: Re: Faster compilation speed Date: Tue, 20 Aug 2002 04:15:00 -0000 Message-id: <200208201113.MAA14266@cam-mail2.cambridge.arm.com> References: <200208141714.NAA31136@makai.watson.ibm.com> X-SW-Source: 2002-08/msg01172.html > >>>>> Richard Henderson writes: > > Richard> The folks that are doing cache-miss studies and concluding anything > Richard> should also go back and measure gcc 2.95, before we used GC at all. > Richard> That's perhaps not ideal, since it's obstacks instead of reference > Richard> counting, but it's not a worthless data point. > > Thanks for the suggestion. I think the results I got are pretty > damning: > > gcc-2.95.3 20010315 (release) > > Source I/D$ miss -O2 I/D$ miss -O0 > ------ ------------- ------------- > reload.c 28 36 > insn-recog.c 48 36 > > > For comparison, GCC 3.3 has values in the low 20's, especially at > no optimization. > > David > Do you have/can you get data for TLB misses? R.