> Thanks! In fact, I should ask how to deal with idiom (such as > reduction, induction) recognition for virtual defs/uses. >
Just curious - what is this for? (are you interested in this in the context of vectorization? is there a specific example you have in mind?) dorit > Jiahua > > > 2007/2/12, Daniel Berlin <[EMAIL PROTECTED]>: > > On 2/12/07, Jiahua He <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > > > I am reading the code of autovect branch and curious about how to deal > > > with the dependencies of virtual defs/uses. In the function > > > vect_analyze_scalar_cycles( ), I found the statement "Skip virtual > > > phi's. The data dependences that are associated with virtual defs/uses > > > ( i.e., memory accesses) are analyzed elsewhere." But where is the > > > code? I tried to search for "vect_induction_def" and > > > "vect_reduction_def" and found that they are not used to assign > > > elsewhere. Is the analysis not implemented yet? Thanks in advance! > > > > They show up as data references because of tree-data-reference.c > marking them. > > At lets, that's how other linear loop transforms handles it. > > Not sure about how vectorizer deals with it specifically > > > > > > > > Jiahua > > > > >
