4 Commits

Author	SHA1	Message	Date
Roman Lebedev	d4c0abb4a3	[SimplifyCFG] Teach FoldCondBranchOnPHI() to preserve DomTree	2020-12-30 00:48:11 +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	49dac4aca0	[SimplifyCFG] MergeBlockIntoPredecessor() 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.	2020-12-17 01:03:49 +03:00
Nikita Popov	a48cf72238	[InstSimplify] Handle not inserted instruction gracefully (PR46638) ... When simplifying comparisons using a dominating assume, bail out if the context instruction is not inserted.	2020-07-08 21:43:32 +02:00