[clang] [lld] [lld][COFF] Add optimization remarks options to lld-link (PR #205390)

[Martin Storsjö via cfe-commits]

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@@ -1322,6 +1306,14 @@ std::string ToolChain::GetLinkerPath(bool *LinkerIsLLD) const {
         *LinkerIsLLD = UseLinker == "lld";
       return LinkerPath;
     }
+
+    // If ld.<name> was not found, try the name directly (e.g. lld-link).
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mstorsjo wrote:

This change really sounds like its own separate change, and it's unclear to me whether this even is necessary/worthwhile. It's already possible to specify `-fuse-ld=lld`, which for the MSVC mode linking invokes `lld-link`.

This needs to be clearly split out and raised as its own Clang change - and it also needs tests.

https://github.com/llvm/llvm-project/pull/205390