[llvm] Local: Handle noalias_addrspace in combineMetadata (PR #103938)

[Nikita Popov via llvm-commits]

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@@ -3394,6 +3394,10 @@ void llvm::combineMetadata(Instruction *K, const Instruction *J,
         if (DoesKMove)
           K->setMetadata(Kind, MDNode::getMergedProfMetadata(KMD, JMD, K, J));
         break;
+      case LLVMContext::MD_noalias_addrspace:
+        if (DoesKMove)
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nikic wrote:

You can test the !DoesKMove case via something like EarlyCSE or GVN.

https://github.com/llvm/llvm-project/pull/103938