I’ve uploaded a new patch which brings this all together with a new ElementwiseMappable trait: https://reviews.llvm.org/D90731
The std-to-linalg patch from the OP has been update to use the new ElementwiseMappable trait: https://reviews.llvm.org/D90354
Please take a look. I think once we get some more signal on this thread, that patches should be pretty much ready to submit.