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Hi Star Tan, Thanks for the very interesting perf analyses. Star Tan wrote: > We can see the "Combine redundant instructions" are invoked many times and the > extra invoke resulted by Polly's canonicalization is the most significant > one. We have found this problem before and I need to look into the details of > canonicalization passes related to "Combine

At 2013-09-09 05:52:35,"Tobias Grosser" <tobias at grosser.es> wrote: >On 09/08/2013 08:03 PM, Star Tan wrote: >> Hello all, >> >> >> I have done some basic experiments about Polly canonicalization passes and I found the SCEV canonicalization has significant impact on both compile-time and execution-time performance. > >Interesting. > >>