Hi, all
        "region" here I means the compilation unit, such as Single Entry
Multi Exit(SEME) region, Multi Entry Multi Exit(MEME) region, LOOP region
defined in open64 etc. I found these region related codes are in
be/cg/region folder. 
    I want to do "data dependence analysis" based on region in "IPA phase",
are there any related codes in open64? Can I use the region structure
already defined in open64? Or other suggestions?
    I found CFG analysis based on region in open64. Is it robust?

Thanks
May


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