[lld] [llvm] [DTLTO][ELF][COFF] Add archive support for DTLTO. (PR #157043)

[Teresa Johnson via llvm-commits]

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@@ -33,6 +33,13 @@
 #include "llvm/Transforms/IPO/FunctionAttrs.h"
 #include "llvm/Transforms/IPO/FunctionImport.h"
 
+namespace llvm {
+namespace lto {
+class LTO;
+}
+} // namespace llvm
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teresajohnson wrote:

I just noticed this because clang-format is complaining about the extra line below. Why is this new block needed? I don't see any added references to the LTO class below that would require the forward declaration - can it be removed? In fact, there is already a forward declaration of LTO at line 121 below.

https://github.com/llvm/llvm-project/pull/157043