Rollup merge of rust-lang#109659 - krasimirgg:llvm17lto, r=nikic

llvm-wrapper: adapt for LLVM API change

Adapts the wrapper for the LLVM commit llvm/llvm-project@377e131.

Found by the experimental rust + LLVM @ HEAD bot: https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/18141#01872217-de22-4826-b0d6-2dd4884d8893

Author: Dylan-DPC

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -1158,13 +1158,6 @@ LLVMRustCreateThinLTOData(LLVMRustThinLTOModule *modules,
   // Otherwise, we sometimes lose `static` values -- see #60184.
   computeDeadSymbolsWithConstProp(Ret->Index, Ret->GUIDPreservedSymbols,
                                   deadIsPrevailing, /* ImportEnabled = */ false);
-  ComputeCrossModuleImport(
-    Ret->Index,
-    Ret->ModuleToDefinedGVSummaries,
-    Ret->ImportLists,
-    Ret->ExportLists
-  );
-
   // Resolve LinkOnce/Weak symbols, this has to be computed early be cause it
   // impacts the caching.
   //
@@ -1181,6 +1174,16 @@ LLVMRustCreateThinLTOData(LLVMRustThinLTOModule *modules,
       return true;
     return Prevailing->second == S;
   };
+  ComputeCrossModuleImport(
+    Ret->Index,
+    Ret->ModuleToDefinedGVSummaries,
+#if LLVM_VERSION_GE(17, 0)
+    isPrevailing,
+#endif
+    Ret->ImportLists,
+    Ret->ExportLists
+  );
+
   auto recordNewLinkage = [&](StringRef ModuleIdentifier,
                               GlobalValue::GUID GUID,
                               GlobalValue::LinkageTypes NewLinkage) {