Sergey,

This patch moves the aforementioned test from the <misc> to the <trace/>
directory, includes it in <index>, and names the subtests.

Part of tarantool/tarantool#9398
---

 test/LuaJIT-tests/misc/wbarrier_jit.lua | 18 ------------------
 test/LuaJIT-tests/trace/index           |  1 +
 test/LuaJIT-tests/trace/wbarrier.lua    | 16 ++++++++++++++++
 3 files changed, 17 insertions(+), 18 deletions(-)
 delete mode 100644 test/LuaJIT-tests/misc/wbarrier_jit.lua
 create mode 100644 test/LuaJIT-tests/trace/wbarrier.lua

diff --git a/test/LuaJIT-tests/misc/wbarrier_jit.lua b/test/LuaJIT-tests/misc/wbarrier_jit.lua
deleted file mode 100644
index 2c8dd7fb..00000000
--- a/test/LuaJIT-tests/misc/wbarrier_jit.lua
+++ /dev/null
@@ -1,18 +0,0 @@
-
-do
-  local t = {[0]={}}
-  for i=1,1e5 do t[i] = {t[i-1]} end
-  for i=1,1e5 do assert(t[i][1] == t[i-1]) end
-end
-
-do
-  local f
-  do
-    local x = 0
-    function f()
-      for i=1,1e5 do x = {i} end
-    end
-  end
-  f()
-end
-
diff --git a/test/LuaJIT-tests/trace/index b/test/LuaJIT-tests/trace/index
index c7fbbe57..5e1c4c2e 100644
--- a/test/LuaJIT-tests/trace/index
+++ b/test/LuaJIT-tests/trace/index
@@ -13,3 +13,4 @@ stitch.lua
 tcall_base.lua
 tcall_loop.lua
 unordered_jit.lua
+wbarrier.lua
diff --git a/test/LuaJIT-tests/trace/wbarrier.lua b/test/LuaJIT-tests/trace/wbarrier.lua
new file mode 100644
index 00000000..625c0ff2
--- /dev/null
+++ b/test/LuaJIT-tests/trace/wbarrier.lua
@@ -0,0 +1,16 @@
+do --- TBAR for HSTORE.
+  local t = {[0]={}}
+  for i = 1, 1e5 do t[i] = {t[i - 1]} end
+  for i = 1, 1e5 do assert(t[i][1] == t[i - 1]) end
+end
+
+do --- OBAR for USTORE.
+  local f
+  do
+    local x = 0
+    function f()
+      for i = 1, 1e5 do x = {i} end
+    end
+  end
+  f()
+end