[llvm] [LV] Compute SCEV for memcheck before unlinking (PR #160326)

[David Sherwood via llvm-commits]

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@@ -1763,6 +1763,10 @@ class GeneratedRTChecks {
   /// If it is nullptr no memory runtime checks have been generated.
   Value *MemRuntimeCheckCond = nullptr;
 
+  /// True if memory checks are outer-loop invariant (hoistable).
+  /// Used to discount check cost for inner loops.
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david-arm wrote:

nit: Perhaps clearer written as 'Used to discount the cost of performing runtime checks for inner loops'?

https://github.com/llvm/llvm-project/pull/160326