------- Comment #13 from zadeck at naturalbridge dot com 2007-07-08 02:41 ------- Subject: Re: [4.3 Regression] checking for suffix of object files... configure: error: cannot compute suffix of f object files: cannot compile
dave at hiauly1 dot hia dot nrc dot ca wrote: > ------- Comment #12 from dave at hiauly1 dot hia dot nrc dot ca 2007-07-08 > 02:29 ------- > Subject: Re: [4.3 Regression] checking for suffix of object files... > configure: error: cannot compute suffix of f objeRO > > >> Why can't you put something in the prologue that sets the reg and has an >> unspec as the lhs to make this reg live? I thought that the purpose of >> the unspecs was to be used in this manner since the unspec does not have >> actually map to any real insns. >> > > I believe that's too late. The prologue expansion occurs after the > greg pass. The problem is the arg pointer gets used in the greg pass > since it isn't alive at entry. > > Dave > > > why can't you generate a set of a pseudo from an unspec at the top of the function during rtl generation time. (or perhaps at one of the time of one of the expansions) There is nothing magical about the entry block defs except that they are all fixed regs. There really is not a mechanism to support a psuedo, or a varying register there. kenny -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32398
