Daniel Sanders 67474bbe7f [gicombiner] Process the MatchDag such that every node is reachable from the roots ... Summary: When we build the walk across these DAG's we need to be able to reach every node from the roots. Flip and traversal edges (so that use->def becomes def->uses) that make nodes unreachable. Note that early on we'll just error out on these flipped edges as def->uses edges are more complicated to match due to their one->many nature. Depends on D69077 Reviewers: volkan, bogner Subscribers: llvm-commits		2019-12-17 17:03:24 +00:00
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defs-invalid.td
match-invalid.td
parse-match-pattern.td	[gicombiner] Process the MatchDag such that every node is reachable from the roots	2019-12-17 17:03:24 +00:00