From f8feed7d2713c25a5ef216d185eaa73044cb9318 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Wed, 20 Jul 2022 13:36:58 +0000
Subject: [PATCH] Implement vtable_size and vtable_align intrinsics for cg_clif

---
 src/intrinsics/mod.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/intrinsics/mod.rs b/src/intrinsics/mod.rs
index 4b2207f37587..d5a79e254a89 100644
--- a/src/intrinsics/mod.rs
+++ b/src/intrinsics/mod.rs
@@ -431,6 +431,16 @@ fn codegen_regular_intrinsic_call<'tcx>(
             ret.write_cvalue(fx, CValue::by_val(align, usize_layout));
         };
 
+        vtable_size, (v vtable) {
+            let size = crate::vtable::size_of_obj(fx, vtable);
+            ret.write_cvalue(fx, CValue::by_val(size, usize_layout));
+        };
+
+        vtable_align, (v vtable) {
+            let align = crate::vtable::min_align_of_obj(fx, vtable);
+            ret.write_cvalue(fx, CValue::by_val(align, usize_layout));
+        };
+
         unchecked_add | unchecked_sub | unchecked_mul | unchecked_div | exact_div | unchecked_rem
         | unchecked_shl | unchecked_shr, (c x, c y) {
             // FIXME trap on overflow