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Re: Faster compilation speed
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Richard Henderson <rth at redhat dot com>, "David S. Miller" <davem at redhat dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 14 Aug 2002 13:14:53 -0400
- Subject: Re: Faster compilation speed
>>>>> 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