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Re: Faster compilation speed
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: David Edelsohn <dje at watson dot ibm dot com>
- Cc: Richard Henderson <rth at redhat dot com>, "David S. Miller" <davem at redhat dot com>, gcc at gcc dot gnu dot org, Richard dot Earnshaw at arm dot com
- Date: Tue, 20 Aug 2002 12:13:19 +0100
- Subject: Re: Faster compilation speed
- Organization: ARM Ltd.
- Reply-to: Richard dot Earnshaw at arm dot com
> >>>>> 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
> 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.
Do you have/can you get data for TLB misses?