4 Commits

Author	SHA1	Message	Date
Roman Lebedev	4be8707e64	[SimplifyCFG] Teach FoldTwoEntryPHINode() to preserve DomTree ... Still boring, simply drop all edges to successors of DomBlock, and add an edge to to BB instead.	2020-12-20 00:18:33 +03:00
Roman Lebedev	b43b77ff9b	[NFCI][SimlifyCFG] simplifyOnce(): also perform DomTree validation ... And that exposes that a number of tests don't *actually* manage to maintain DomTree validity, which is inline with my observations. Once again, SimlifyCFG pass currently does not require/preserve DomTree by default, so this is effectively NFC.	2020-12-20 00:18:32 +03:00
Roman Lebedev	164e0847a5	[SimplifyCFG] DeleteDeadBlock() already knows how to preserve DomTree ... ... so just ensure that we pass DomTreeUpdater it into it. Fixes DomTree preservation for a large number of tests, all of which are marked as such so that they do not regress.	2020-12-18 00:37:21 +03:00
Sam Parker	a5405a2f05	[NFC][ARM] Add SimplifyCFG tests	2020-07-14 11:10:11 +01:00