[llvm] [AArch64] Don't tail call memset if it would convert to a bzero. (PR #98969)

[Matt Arsenault via llvm-commits]

================
@@ -148,10 +148,6 @@ bool returnTypeIsEligibleForTailCall(const Function *F, const Instruction *I,
                                      const TargetLoweringBase &TLI,
                                      bool ReturnsFirstArg = false);
 
-/// Check whether B is a bitcast of a pointer type to another pointer type,
-/// which is equal to A.
-bool isPointerBitcastEqualTo(const Value *A, const Value *B);
----------------
arsenm wrote:

Removing this is an unrelated patch? 

https://github.com/llvm/llvm-project/pull/98969