[clang] [llvm] [ThinLTO] Support dead RTTI data elimination under -fno-split-lto-unit (PR #126336)

[Teresa Johnson via llvm-commits]

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@@ -0,0 +1,25 @@
+#include "llvm/Support/LibCXXABI.h"
+
+namespace llvm {
+
+std::unique_ptr<CXXABI> CXXABI::Create(Triple &TT) {
+  if (TT.getOS() == Triple::Linux)
+    return std::make_unique<Itanium>();
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teresajohnson wrote:

This is overly restrictive, however, since Linux is not the only user of the Itanium C++ ABI. See my suggestion in another comment reply about passing this down from clang.

https://github.com/llvm/llvm-project/pull/126336