[llvm] [Object][COFF] Introduce the .llvm.arm64x section (PR #205156)

[James Henderson via llvm-commits]

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@@ -1560,6 +1560,26 @@ std::unique_ptr<MemoryBuffer> COFFObjectFile::getHybridObjectView() const {
   return HybridView;
 }
 
+std::optional<MemoryBufferRef> COFFObjectFile::findHybridObjectSection() const {
+  if (getDOSHeader() || getMachine() != COFF::IMAGE_FILE_MACHINE_ARM64)
+    return std::nullopt;
+
+  // Search the .llvm.arm64x section, which may be used to embed a full ARM64EC
+  // object file into an ARM64 object file.
+  for (const SectionRef &S : sections()) {
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jh7370 wrote:

Nit: `SectionRef` is intended for copying, not using a reference, I believe.

https://github.com/llvm/llvm-project/pull/205156