[lld] [llvm] [NFCI][LTO][lld] Optimize away symbol copies within LTO global resolution in ELF (PR #106193)

[Mingming Liu via llvm-commits]

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@@ -78,6 +78,10 @@ cl::opt<bool> EnableLTOInternalization(
     "enable-lto-internalization", cl::init(true), cl::Hidden,
     cl::desc("Enable global value internalization in LTO"));
 
+static cl::opt<bool>
+    LTOKeepSymbolCopies("lto-keep-symbol-copies", cl::init(false), cl::Hidden,
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minglotus-6 wrote:

This is a back-up option in case this change hit any corner case (missed a symbol) but not caught in release. Though all symbols used by GlobalResolutions should be covered by looking at the code.

https://github.com/llvm/llvm-project/pull/106193