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llvm15/llvm-workaround-superfluous-branches.patch

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518 B
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diff --git a/llvm/include/llvm/Support/Casting.h b/llvm/include/llvm/Support/Casting.h
index b6bbff8..1b68640 100644
--- a/llvm/include/llvm/Support/Casting.h
+++ b/llvm/include/llvm/Support/Casting.h
@@ -605,6 +605,9 @@ LLVM_NODISCARD inline decltype(auto) dyn_cast(From &Val) {
template <typename To, typename From>
LLVM_NODISCARD inline decltype(auto) dyn_cast(From *Val) {
+#if defined(__clang__) && defined(NDEBUG)
+ __builtin_assume(Val);
+#endif
return CastInfo<To, From *>::doCastIfPossible(Val);
}