[llvm] [LoopSink] check conflicting preheader memory access before sink (PR #195510)

[Nikita Popov via llvm-commits]

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@@ -179,6 +179,25 @@ findBBsToSinkInto(const Loop &L, const SmallPtrSetImpl<BasicBlock *> &UseBBs,
   return BBsToSinkInto;
 }
 
+/// Returns true when an \p I from the \p PreheaderBB has conflicting memory
+/// access over the later preheader instructions.
+static bool hasConflictingPreheaderMemoryAccess(Instruction &I, AAResults *AA,
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nikic wrote:

Use BatchAAResults.

https://github.com/llvm/llvm-project/pull/195510