[clang] [clang] Implement a bitwise_copyable builtin type trait. (PR #86512)

[Haojian Wu via cfe-commits]

================
@@ -2749,6 +2749,17 @@ bool QualType::isTriviallyCopyableType(const ASTContext 
&Context) const {
                                      /*IsCopyConstructible=*/false);
 }
 
+bool QualType::isBitwiseCloneableType(const ASTContext & Context) const {
+  if (const auto *RD = getCanonicalType()->getAsCXXRecordDecl()) {
----------------
hokein wrote:

Agree, for the safety reason, we should disable it for NonTrivialObjCLifetime. 
Done.

https://github.com/llvm/llvm-project/pull/86512
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