[llvm] [msan] Add debugging for handleUnknownIntrinsic (PR #123381)

[Thurston Dang via llvm-commits]

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@@ -4033,6 +4041,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
 
   void visitIntrinsicInst(IntrinsicInst &I) {
     switch (I.getIntrinsicID()) {
+#if 0
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thurstond wrote:

Thanks, this patch adds debugging but I accidentally left in too much debugging.

https://github.com/llvm/llvm-project/pull/123381