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...er of instcombine and GVN passes. I don't see a strong reason why we would not want to do this after vectorization (In case it is known to be useful in general). > +++ b/lib/Transforms/Vectorize/BBVectorize.cpp > @@ -0,0 +1,1338 @@ > + typedef std::pair<Value *, Value *> value_pair; > + typedef std::pair<value_pair, value_pair> vp_pair; > + typedef std::pair<std::multimap<Value *, Value *>::iterator, > + std::multimap<Value *, Value *>::iterator> vp_iterator_pair; > + typedef std::pair<std::multimap<value_pair,...

...#39;t see a strong reason > why we would not want to do this after vectorization (In case it is > known to be useful in general). > > > > +++ b/lib/Transforms/Vectorize/BBVectorize.cpp > > @@ -0,0 +1,1338 @@ > > > + typedef std::pair<Value *, Value *> value_pair; > > + typedef std::pair<value_pair, value_pair> vp_pair; > > + typedef std::pair<std::multimap<Value *, Value *>::iterator, > > + std::multimap<Value *, Value *>::iterator> vp_iterator_pair; > > + typedef std::pair<std::mul...

Tobias, et al., Attached is the my autovectorization pass. I've fixed a bug that appears when using -bb-vectorize-aligned-only, fixed some 80-col violations, etc., and at least on x86_64, all test cases pass except for a few; and all of these failures look like instruction-selection bugs. For example: MultiSource/Applications/ClamAV - fails to compile shared_sha256.c with an error: error in

Tobias, I've attached the latest version of my autovectorization patch. I was able to add support for using the ScalarEvolution analysis for load/store pairing (thanks for your help!). This led to a modest performance increase and a modest compile-time increase. This version also has a cutoff as you suggested (although the default value is set high (4000 instructions between pairs) because