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Re: stepanov on Darwin
- To: gcc at gcc dot gnu dot org
- Subject: Re: stepanov on Darwin
- From: dalej at apple dot com
- Date: Wed, 6 Jun 2001 09:45:42 -0700
- Cc: David Edelsohn <dje at watson dot ibm dot com>
On Friday, June 1, 2001, at 04:28 PM, dalej@apple.com wrote:
| Curious that the code is so different from what David Edelsohn saw
[on AIX]
It became less curious once we figured out that I was using -O3 and he
was using -O2. In fact the code for the tight loops with -O2 is
essentially identical for the two targets (aside from some known
differences like scheduling). The improvement I got with -O3 appears to
be entirely attributable to inlining, and is also seen on AIX.