[llvm] [InstCombine] Use copyMetadata in PointerReplacer::replace (PR #201827)

[Justin Lebar via llvm-commits]

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@@ -481,6 +481,26 @@ define i8 @call_readonly_keep_alloca2() {
   ret i8 %v
 }
 
+; The pointer changes but the load type doesn't, so all metadata (here
+; !annotation, which the type-changing copyMetadataForLoad would drop) must be
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jlebar wrote:

Yeah, not sure there is, kind of by construction in copyMetadataForLoad.

https://github.com/llvm/llvm-project/pull/201827