Sergey,

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

Part of tarantool/tarantool#9398
---

 test/LuaJIT-tests/misc/jit_flush.lua  | 50 --------------------
 test/LuaJIT-tests/trace/index         |  1 +
 test/LuaJIT-tests/trace/jit_flush.lua | 66 +++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 50 deletions(-)
 delete mode 100644 test/LuaJIT-tests/misc/jit_flush.lua
 create mode 100644 test/LuaJIT-tests/trace/jit_flush.lua

diff --git a/test/LuaJIT-tests/misc/jit_flush.lua b/test/LuaJIT-tests/misc/jit_flush.lua
deleted file mode 100644
index ead1e4e9..00000000
--- a/test/LuaJIT-tests/misc/jit_flush.lua
+++ /dev/null
@@ -1,50 +0,0 @@
-
-if not jit or not jit.status or not jit.status() then return end
-
-for i=1,100 do
-  if i==50 then jit.flush(2) end
-  for j=1,100 do end
-  for j=1,100 do end
-end
-
-jit.flush()
-
-local function f() for i=1,100 do end end
-for i=1,100 do local x = gcinfo(); f() end
-
-jit.flush()
-
-local function fib(n)
-  if n < 2 then return 1 end
-  return fib(n-2) + fib(n-1)
-end
-
-fib(11)
-
-jit.flush()
-
-local names = {}
-for i=1,100 do names[i] = i end
-
-function f()
-  for k,v in ipairs(names) do end
-end
-
-f()
-
-for i=1,2 do
-  f()
-  f()
-  jit.flush()
-end
-
-jit.flush()
-
-jit.flush(1) -- ignored
-jit.flush(2) -- ignored
-for i=1,1e7 do end -- causes trace #1
-
-jit.flush(2) -- ignored
-jit.flush(1) -- ok
-jit.flush(1) -- crashes
-
diff --git a/test/LuaJIT-tests/trace/index b/test/LuaJIT-tests/trace/index
index 63af7870..3ab095a7 100644
--- a/test/LuaJIT-tests/trace/index
+++ b/test/LuaJIT-tests/trace/index
@@ -5,6 +5,7 @@ gc.lua
 gc64_slot_revival.lua
 hook_norecord.lua
 hook_record.lua
+jit_flush.lua
 phi
 snap.lua
 stitch.lua
diff --git a/test/LuaJIT-tests/trace/jit_flush.lua b/test/LuaJIT-tests/trace/jit_flush.lua
new file mode 100644
index 00000000..a995921e
--- /dev/null
+++ b/test/LuaJIT-tests/trace/jit_flush.lua
@@ -0,0 +1,66 @@
+do --- Flushing a trace that is a link for another trace.
+  -- TRACE 3 stop -> 2
+  jit.flush()
+  for i = 1, 100 do
+    if i == 50 then jit.flush(2) end
+    for _ = 1, 100 do end
+    for _ = 1, 100 do end
+  end
+
+  jit.flush()
+end
+
+do --- Flushing stitched trace.
+  jit.flush()
+  local function f() for _ = 1, 100 do end end
+  for _ = 1, 100 do local x = gcinfo(); f() end
+
+  jit.flush()
+end
+
+do --- Flushing trace with up-recursion.
+  jit.flush()
+
+  local function fib(n)
+    if n < 2 then return 1 end
+    return fib(n - 2) + fib(n - 1)
+  end
+
+  fib(11)
+
+  jit.flush()
+end
+
+do --- Flush in the loop.
+  jit.flush()
+
+  local names = {}
+  for i = 1, 100 do names[i] = i end
+
+  local function f()
+    for k, v in ipairs(names) do end
+  end
+
+  f()
+
+  for _ = 1, 2 do
+    f()
+    f()
+    jit.flush()
+  end
+
+  jit.flush()
+end
+
+

+do --- Flushes of not existed traces.
+  jit.flush()
+
+  jit.flush(1) -- ignored
+  jit.flush(2) -- ignored
+  for _ = 1, 1e7 do end -- causes trace #1
+
+  jit.flush(2) -- ignored
+  jit.flush(1) -- ok
+  jit.flush(1) -- crashes
+end