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Re: profiling on sh
- From: Mark Mitchell <mark at codesourcery dot com>
- To: mike stump <mrs at windriver dot com>, "aoliva at redhat dot com" <aoliva at redhat dot com>
- Cc: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Sun, 17 Mar 2002 23:26:07 -0800
- Subject: Re: profiling on sh
> What issue were you trying to resolve with this change Mark? Did you
> mean to kill performance of some apps? :-(
Obviously not.
I no longer remember the details here.
I believe there was some question about whether `extern "C" memcpy' was
the same as the `std::memcpy' variant. In other words, whether the
compiler could safely assume that the `extern "C"' version, in the
global namespace, meant what the compiler assumed it meant when treating
it as a builtin.
I believe that someone (likely Jason or Benjamin) quoted something that
suggested that it was safe to make this assumption, but that we never
acted on that. If you file a PR, and send me email noting this
performance regression, we'll get it resolved before 3.1.
--
Mark Mitchell mark@codesourcery.com
CodeSourcery, LLC http://www.codesourcery.com