[lld] lld: add support for NOCROSSREFS(_TO) (PR #95714)

[Daniel Thornburgh via llvm-commits]

================
@@ -235,6 +236,32 @@ void ScriptParser::readVersionScriptCommand() {
   }
 }
 
+void ScriptParser::readNoCrossRefs(bool to) {
+  expect("(");
+
+  script->noCrossRefLists.push_back({});
+  auto &list = script->noCrossRefLists.back();
+
+  if (to && peek() != ")") {
+    StringRef toSection = next();
+
+    list.toSection = toSection;
+  }
+
+  while (!atEOF() && !errorCount() && peek() != ")") {
+    StringRef section = next();
+
+    list.outputSections.push_back(section);
+  }
+
+  // Discard meaningless lists
+  if ((to && list.outputSections.size() < 1) ||
----------------
mysterymath wrote:

```suggestion
  if ((to && list.outputSections.empty()) ||
```

https://github.com/llvm/llvm-project/pull/95714