[llvm] DAG: Avoid some libcall string name comparisons (PR #166321)

[Simon Pilgrim via llvm-commits]

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@@ -9257,21 +9257,22 @@ SDValue SelectionDAG::getMemcpy(
   // FIXME: pass in SDLoc
   TargetLowering::CallLoweringInfo CLI(*this);
   bool IsTailCall = false;
-  const char *MemCpyName = TLI->getMemcpyName();
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RKSimon wrote:

While we're at it - should we deprecate getMemcpyName entirely?

https://github.com/llvm/llvm-project/pull/166321