[tablegen][globalisel] Convert the SelectionDAG importer to a tree walking approach. NFC
Summary:
But don't actually inspect the tree any deeper than we already do. This
change is NFC but the next one will enable full traversal of the
source/destination patterns.
Depends on D30535
Reviewers: t.p.northover, qcolombet, aditya_nandakumar, rovka, ab
Subscribers: igorb, dberris, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D30536
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299001 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed