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

[Amir Ayupov via llvm-commits]

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@@ -49,6 +48,8 @@ cl::opt<bolt::IdenticalCodeFolding::ICFLevel> ICF(
     cl::init(bolt::IdenticalCodeFolding::ICFLevel::None),
     cl::values(clEnumValN(bolt::IdenticalCodeFolding::ICFLevel::All, "all",
                           "Enable identical code folding"),
+               clEnumValN(bolt::IdenticalCodeFolding::ICFLevel::All, "1",
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aaupov wrote:

Define "0" as well, and add a deprecation warning. Examples: https://reviews.llvm.org/D128558, https://reviews.llvm.org/D126722

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