------- Comment #7 from jason at redhat dot com 2009-01-28 16:29 ------- Subject: Re: [4.4 Regression] g++.dg/init/const7.C XFAILed
rguenther at suse dot de wrote: >> Why do it in the FE? This seems like a language-independent optimization. > > Do it in the FE if the FE wants it to be optimized to a constant. > Otherwise sure - it is a language-independent optimization. But fold > isn't a proper optimizer ;) I don't understand the distinction you're making; it seems to me that reducing expressions to simpler forms that are more easily optimized is exactly what fold is for. I don't see the difference between this and, say, reducing "1 + 2" to "3". The FE doesn't especially want this to be a constant; it isn't a valid constant expression in C++, because it involves a subtraction of two pointers. Jason -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38880
