Sam Parker 42350cd893 [ARM][MVE] Tail Predicate IsSafeToRemove ... Introduce a method to walk through use-def chains to decide whether it's possible to remove a given instruction and its users. These instructions are then stored in a set until the end of the transform when they're erased. This is now used to perform checks on the iteration count (LoopDec chain), element count (VCTP chain) and the possibly redundant iteration count. As well as being able to remove chains of instructions, we know also check that the sub feeding the vctp is producing the expected value. Differential Revision: https://reviews.llvm.org/D71837		2020-01-17 13:19:14 +00:00
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llvm	[ARM][MVE] Tail Predicate IsSafeToRemove	2020-01-17 13:19:14 +00:00
llvm-c	[Coroutines] Rename "legacy" passes (NFC)	2020-01-01 21:41:16 -05:00