From ab659972fb89a5353ffe80bd5e3d2393a025558f Mon Sep 17 00:00:00 2001
From: Tim Besard <tim.besard@gmail.com>
Date: Wed, 21 Dec 2022 16:17:08 +0100
Subject: [PATCH] Debug: put back the per-instruction barrier.

---
 src/codegen.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/codegen.cpp b/src/codegen.cpp
index 6e93c012045df..c97e959fb5683 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -7806,6 +7806,13 @@ static jl_llvm_functions_t
             ctx.builder.SetInsertPoint(tryblk);
         }
         else {
+            if (!jl_is_method(ctx.linfo->def.method) && !ctx.is_opaque_closure) {
+                // TODO: inference is invalid if this has any effect (which it often does)
+                LoadInst *world = ctx.builder.CreateAlignedLoad(getSizeTy(ctx.builder.getContext()),
+                    prepare_global_in(jl_Module, jlgetworld_global), Align(sizeof(size_t)));
+                world->setOrdering(AtomicOrdering::Monotonic);
+                ctx.builder.CreateAlignedStore(world, world_age_field, Align(sizeof(size_t)));
+            }
             emit_stmtpos(ctx, stmt, cursor);
             mallocVisitStmt(debuginfoloc, nullptr);
         }