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

[via cfe-commits]

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@@ -0,0 +1,272 @@
+// RUN: %clang_cc1 -std=c++2c -verify %s
+
+class Trivial {};
+struct NonRelocatable {
+    ~NonRelocatable();
+};
+static NonRelocatable NonRelocatable_g;
+
+class A trivially_relocatable_if_eligible {};
+class B trivially_relocatable_if_eligible : Trivial{};
+class C trivially_relocatable_if_eligible {
+    int a;
+    void* b;
+    int c[3];
+    Trivial d[3];
+    NonRelocatable& e = NonRelocatable_g;
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Sirraide wrote:

Maybe add some `const`/`volatile` members too.

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