[llvm] [BOLT] Add support for safe-icf (PR #116275)

[Davide Italiano via llvm-commits]

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@@ -276,12 +276,23 @@ class BinaryContext {
   void deregisterSectionName(const BinarySection &Section);
 
 public:
+  enum class ICFLevel {
+    None,
+    Safe,
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dcci wrote:

I think the comment here was useful, we can keep it (without mentioning MSVC). Thanks.

https://github.com/llvm/llvm-project/pull/116275