> This is what written in the GCC manual. > My problem is that if these expressions are used to > match generated RTL insn then > > 1. What is the difference between these and the > nameless 'define_insn'? No difference, except that you would be able to know which nameless pattern (the define_insn with *) is used to generate the RTL code. Without *, you won't get what define_insn matched out of the nameless patterns. You see, it only holds for debugging purposes. > > 2. To match RTL code, that code should be generated by > some other 'define_insn'. > But the pattern in define_insn "*..." does not match > with the other patterns in the whole .md file at all. > This means that those RTL insn is not generated by any > RTL expression > in .md file. So what is the need to match them. Sorry, I'm not able to get the point.......Please clarify > > Waiting for reply. > Nitin Jain > CSE Dept. (IIT bombay) > > > Regards, > > Rakesh > > > ===== > ------------------------------------------------------------------- > Nitin Jain, > H-8 ,Room No: 24 > I.I.T.Bombay, Powai, Mumbai. > Mail-id: nitin-mbm@xxxxxxxxx > nitinj@xxxxxxxxxxxxxx > ------------------------------------------------------------------- > > __________________________________ > Do you Yahoo!? > Yahoo! SiteBuilder - Free, easy-to-use web site design software > http://sitebuilder.yahoo.com >
