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Author SHA1 Message Date
Florian Hahn
3abaa3760d
[LSR] Preserve LCSSA in expander when rewriting loop exit values. 
The expanded values when rewriting exit values need to preserve LCSSA.
Ask SCEVExpander to preserve LCSSA to ensure that.

Fixes #58007.
 2022-09-27 09:58:48 +01:00
Florian Hahn
be2ea29ee1 [SCEV] Add additional tests. 
Increase test coverage for upcoming changes to how SCEV deals with LCSSA
phis.
 2020-07-28 16:15:57 +01:00