PassWrapper: handle function rename from upstream D36850

thinLTOResolvePrevailingInModule became thinLTOFinalizeInModule and
gained the ability to propagate noRecurse and noUnwind function
attributes. I ran codegen tests with it both on and off, as the upstream
patch uses it in both modes, and the tests pass both ways. Given that,
it seemed reasonable to go ahead and let the propagation be enabled in
rustc, and see what happens. See https://reviews.llvm.org/D36850 for
more examples of how the new version of the function gets used.

Author: durin42

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -1572,7 +1572,11 @@ extern "C" bool
 LLVMRustPrepareThinLTOResolveWeak(const LLVMRustThinLTOData *Data, LLVMModuleRef M) {
   Module &Mod = *unwrap(M);
   const auto &DefinedGlobals = Data->ModuleToDefinedGVSummaries.lookup(Mod.getModuleIdentifier());
+#if LLVM_VERSION_GE(14, 0)
+  thinLTOFinalizeInModule(Mod, DefinedGlobals, /*PropagateAttrs=*/true);
+#else
   thinLTOResolvePrevailingInModule(Mod, DefinedGlobals);
+#endif
   return true;
 }