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Author SHA1 Message Date
Bjorn Pettersson 1db2551cc1 [NewPM] Rename 'unswitch' to 'simple-loop-unswitch' in PassRegistry 
It is confusing to have two ways of specifying the same pass
('simple-loop-unswitch' and 'unswitch'). This patch replaces
'unswitch' by 'simple-loop-unswitch' to get a unique identifier.

Using 'simple-loop-unswitch' instead of 'unswitch' also has the
advantage of matching how the pass is named in DEBUG_TYPE etc. So
this makes it a bit more consistent how we refer to the pass in
options such as -passes, -print-after and -debug-only.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D105628
 2021-07-09 09:47:33 +02:00
Arthur Eubanks 0eda454796 [SimpleLoopUnswitch] Don't non-trivially unswitch loops that are unsafe to clone 
Non-trivial unswitching can clone loops.

The legacy -loop-unswitch pass also checks for this.

Fixes PR49085.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D96288
 2021-02-08 13:19:24 -08:00