[clang] [Clang] Implement the core language parts of P2786 - Trivial relocation (PR #127636)

[via cfe-commits]

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@@ -2862,6 +2862,30 @@ bool QualType::isTriviallyRelocatableType(const ASTContext &Context) const {
   }
 }
 
+bool QualType::isCppTriviallyRelocatableType(const ASTContext &Context) const {
+  QualType BaseElementType = Context.getBaseElementType(*this);
+  if (BaseElementType->isIncompleteType())
+    return false;
+  if (BaseElementType->isScalarType())
+    return true;
+  if (const auto *RD = BaseElementType->getAsCXXRecordDecl())
+    return RD->isTriviallyRelocatable();
+  return false;
+}
+
+bool QualType::isReplaceableType(const ASTContext &Context) const {
+  if (isConstQualified())
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Sirraide wrote:

Don’t we also need to check `isVolatileQualified()` here?

https://github.com/llvm/llvm-project/pull/127636