flatten: simplify. NFC.
authorwhitequark <whitequark@whitequark.org>
Wed, 3 Jun 2020 02:28:39 +0000 (02:28 +0000)
committerwhitequark <whitequark@whitequark.org>
Thu, 4 Jun 2020 00:02:12 +0000 (00:02 +0000)
commit5d2b6d1394f504729c0f2670b87534ea7efaec4b
tree26ea7f9cbcd680d61c44acbb4f82f3dc134d0bd3
parent3c3fa774e583af93e2713347b7840ef5d70d3a31
flatten: simplify. NFC.

Flatten is non-recursive and doesn't need to keep track of handled
cells.
passes/techmap/flatten.cc