[llvm] [llvm-objcopy] Add --gap-fill and --pad-to options (PR #65815)

[James Henderson via llvm-commits]

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@@ -357,6 +357,8 @@ template <class ELFT> class ELFWriter : public Writer {
 
 class BinaryWriter : public Writer {
 private:
+  const uint8_t GapFill;
+  const std::optional<uint64_t> PadTo;
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jh7370 wrote:

It looks like this is still `optional`?

https://github.com/llvm/llvm-project/pull/65815