From 1b8ea0705e235828e86d85e9707cea14a034fb19 Mon Sep 17 00:00:00 2001
From: bjorn3 <bjorn3@users.noreply.github.com>
Date: Sun, 30 Jan 2022 17:26:53 +0100
Subject: [PATCH] Add const_allocate and const_deallocate intrinsics

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

diff --git a/src/intrinsics/mod.rs b/src/intrinsics/mod.rs
index 1756cf78c2d8..693b0e21444d 100644
--- a/src/intrinsics/mod.rs
+++ b/src/intrinsics/mod.rs
@@ -1020,6 +1020,16 @@ fn codegen_regular_intrinsic_call<'tcx>(
             ret.write_cvalue(fx, CValue::by_val(is_eq_value, ret.layout()));
         };
 
+        const_allocate, (c _size, c _align) {
+            // returns a null pointer at runtime.
+            let null = fx.bcx.ins().iconst(fx.pointer_type, 0);
+            ret.write_cvalue(fx, CValue::by_val(null, ret.layout()));
+        };
+
+        const_deallocate, (c _ptr, c _size, c _align) {
+            // nop at runtime.
+        };
+
         black_box, (c a) {
             // FIXME implement black_box semantics
             ret.write_cvalue(fx, a);