15 lines
567 B
Diff
15 lines
567 B
Diff
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diff --git a/llvm/include/llvm/Support/Casting.h b/llvm/include/llvm/Support/Casting.h
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index 4ff5865..19623f6 100644
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--- a/llvm/include/llvm/Support/Casting.h
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+++ b/llvm/include/llvm/Support/Casting.h
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@@ -661,6 +661,9 @@ template <typename To, typename From>
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template <typename To, typename From>
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[[nodiscard]] inline decltype(auto) dyn_cast(From *Val) {
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assert(detail::isPresent(Val) && "dyn_cast on a non-existent value");
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+#if defined(__clang__) && defined(NDEBUG)
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+ __builtin_assume(Val);
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+#endif
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return CastInfo<To, From *>::doCastIfPossible(Val);
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}
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