[llvm] [lld] [clang] Embed the command line arguments during LTO (PR #79390)

[Duncan Ogilvie via cfe-commits]

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@@ -40,6 +41,7 @@ using namespace llvm;
 namespace lld::wasm {
 static std::unique_ptr<lto::LTO> createLTO() {
   lto::Config c;
+  c.EmbedCmdArgs = commonContext().cmdArgs;
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mrexodia wrote:

For most drivers (except ELF) I can access the specialized context directly. But when creating the LTO config this isn’t the case. I can add a helper function, but it only complicates the code in my opinion. Tomorrow I will take another look to see if I missed something.

https://github.com/llvm/llvm-project/pull/79390