From: Andrew Haley <aph@xxxxxxxxxx> > It's an interesting point. Do you think that the gccint manual should > assume some knowledge of how optimizing compilers work? > It's explained in > Advanced Compiler Design and Implementation, Steven Muchnick, ISBN 1558603204 > and > http://en.wikipedia.org/wiki/Static_single_assignment_form > We have never to my knowledge included links to Wikipedia in gcc > documentation, but this might be a good time to start. > > Andrew. Thank you, I've also found SSA 's meaning through its abbrev wikipedia entry, http://en.wikipedia.org/wiki/SSA but for PHI, I still did't find a good entry, http://en.wikipedia.org/wiki/PHI Someone know what PHI means, please tell, thank you. My native language is not English, sorry for my understanding, but if someone really know "PHI", please tell, I will thank you; All through gccint manual, I only find one paragraph, looks like a definition for "PHI function" or "PHI node", but it also doesn't explain what "PHI" abbrev for? is "PHI" part of some word, or initial letter of three words? " Sometimes, flow of control makes it impossible to determine the most recent version of a variable. In these cases, the compiler inserts an artificial definition for that variable called "PHI function" or "PHI node". This new definition merges all the incoming versions of the variable to create a new name for it. For instance," I mean: if gccint has a terminology index or table, at least explain what it abbreviated for, maybe that would look better; just like any technology book has a term glossary, at the end; I'm just an amateurish newbie compiler hacker, please help if you could, I'm trying to understand gcc more and trying to contribute back, such one like: http://gcc.gnu.org/ml/gcc-patches/2010-07/msg00912.html and BTW, please add Cc me because I didn't subscribe gcc-help. thank you.
