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llvm18/llvm-workaround-superfluous-branches.patch

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Diff

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