[lld] [llvm] [llvm-lib] Add /llvmlibindex:no to disable writing an index (PR #120596)

[Hans Wennborg via llvm-commits]

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@@ -28,6 +28,11 @@ def nativedeffile : P<"defArm64Native", "def file to use to generate native ARM6
 def llvmlibthin : F<"llvmlibthin">,
     HelpText<"Make .lib point to .obj files instead of copying their contents">;
 
+def llvmlibindex : F<"llvmlibindex">,
+    HelpText<"Write an index to the output (default)">;
+def llvmlibindex_no : F<"llvmlibindex:no">,
+    HelpText<"Do not write an index to the output">;
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zmodem wrote:

These could be a `B` style option (check out e.g. `allowbind` for an example).

https://github.com/llvm/llvm-project/pull/120596