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

Peter Smith via llvm-commits llvm-commits at lists.llvm.org
Mon Jun 17 11:01:10 PDT 2024


================
@@ -2358,3 +2358,62 @@ template void elf::scanRelocations<ELF32LE>();
 template void elf::scanRelocations<ELF32BE>();
 template void elf::scanRelocations<ELF64LE>();
 template void elf::scanRelocations<ELF64BE>();
+
+static bool isNoCrefFromSection(const CrossRefList &list,
+                                const OutputSection *section) {
+  const auto *begin =
+      list.firstOnly ? list.refs.begin() + 1 : list.refs.begin();
+
+  return std::find(begin, list.refs.end(), section->name) != list.refs.end();
+}
+
+static bool isNoCrefToSection(const CrossRefList &list,
+                              const OutputSection *section) {
+  if (list.firstOnly)
+    return list.refs[0] == section->name;
+
+  return std::find(list.refs.begin(), list.refs.end(), section->name) !=
+         list.refs.end();
+}
+
+void elf::checkNoCrossRefs() {
+  // Basic brute-force algorithm, since in reality NOCROSSRES lists are quite
----------------
smithp35 wrote:

type NOCROSSRES -> NOCROSSREFS

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


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