[K/N] Fix KT-50843

Marking constants with unnamed_addr allows LLVM to merge them.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/StaticData.kt

@@ -74,6 +74,13 @@ internal class StaticData(override val context: Context): ContextUtils {
             LLVMSetGlobalConstant(llvmGlobal, if (value) 1 else 0)
         }
 
+        /**
+         * Globals that are marked with unnamed_addr might be merged by LLVM's ConstantMerge pass.
+         */
+        fun setUnnamedAddr(value: Boolean) {
+            LLVMSetUnnamedAddr(llvmGlobal, if (value) 1 else 0)
+        }
+
         fun setLinkage(value: LLVMLinkage) {
             LLVMSetLinkage(llvmGlobal, value)
         }

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/StaticObjects.kt

@@ -56,6 +56,7 @@ internal fun StaticData.createConstKotlinArray(arrayClass: IrClass, elements: Li
 
     global.setInitializer(Struct(compositeType, arrayHeader, arrayBody))
     global.setConstant(true)
+    global.setUnnamedAddr(true)
 
     return createRef(objHeaderPtr)
 }
@@ -65,6 +66,7 @@ internal fun StaticData.createConstKotlinObject(type: IrClass, vararg fields: Co
     val objHeader = objHeader(typeInfo)
 
     val global = this.placeGlobal("", Struct(objHeader, *fields))
+    global.setUnnamedAddr(true)
     global.setConstant(true)
 
     val objHeaderPtr = global.pointer.getElementPtr(0)