[Bug middle-end/18424] 3.4.3 ~6x+ performance regression vs 3.3.1, constant trees not being computed.
joseph at codesourcery dot com
gcc-bugzilla@gcc.gnu.org
Thu Nov 11 16:22:00 GMT 2004
------- Additional Comments From joseph at codesourcery dot com 2004-11-11 16:22 -------
Subject: Re: 3.4.3 ~6x+ performance regression vs
3.3.1, constant trees not being computed.
Have you actually tried compiling code identical to that you test but with
8388608L in place of (1L << 23) before making claims about what is done
with constant expressions?
Your example may suggest a regression, provided no type sizes changed for
your target between the versions compared, but you really shouldn't report
conjectures about the cause of a bug without clear evidence to
substantiate them, which in this case would involve substituting the value
of the constant expression in the testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18424
More information about the Gcc-bugs
mailing list