search for: indirectcallbonus

...w analysis to spot devirtualization opportunities > across functions. (Although ArgPromotion could arrange to have the > vtbl pointer passed in separately, and then inlining and/or partial > specialization could be made to see that it's a pointer to a constant > and thus add in the IndirectCallBonus) There are always going to be cases that can only be deduced with language knowledge. We already do some frontend de-virtualization; this may just be a missing case. Can you post your test? John.

...ould do less to allow analysis to spot devirtualization opportunities across functions. (Although ArgPromotion could arrange to have the vtbl pointer passed in separately, and then inlining and/or partial specialization could be made to see that it's a pointer to a constant and thus add in the IndirectCallBonus) At this point I'm looking for suggestions and feedback. I think implementing (1) and (2) would go a long way toward making several other transformations safely more aggressive, but would involve noticeable (unacceptable?) overhead. Does what I'm looking for already exist? Have they alr...

...ot devirtualization opportunities >> across functions.  (Although ArgPromotion could arrange to have the >> vtbl pointer passed in separately, and then inlining and/or partial >> specialization could be made to see that it's a pointer to a constant >> and thus add in the IndirectCallBonus) > > There are always going to be cases that can only be deduced with > language knowledge.  We already do some frontend de-virtualization; > this may just be a missing case.  Can you post your test? > > John. > I compiled the attached c++ code to bitcode using clang++ -O3, th...

...ion opportunities >>> across functions. (Although ArgPromotion could arrange to have the >>> vtbl pointer passed in separately, and then inlining and/or partial >>> specialization could be made to see that it's a pointer to a constant >>> and thus add in the IndirectCallBonus) >> >> There are always going to be cases that can only be deduced with >> language knowledge. We already do some frontend de-virtualization; >> this may just be a missing case. Can you post your test? > > I compiled the attached c++ code to bitcode using clang++ -...

...evirtualization opportunities > > across functions.  (Although ArgPromotion could arrange to have the > > vtbl pointer passed in separately, and then inlining and/or partial > > specialization could be made to see that it's a pointer to a constant > > and thus add in the IndirectCallBonus) > > There are always going to be cases that can only be deduced with > > language knowledge.  We already do some frontend de-virtualization; > > this may just be a missing case.  Can you post your test? > > I compiled the attached c++ code to bitcode using clang++ -O3, then...