Sergey,

thanks for the patch! LGTM with a minor comment below.

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

Part of tarantool/tarantool#9398
---
 .../{misc/phi_conv.lua => trace/phi/conv.lua} | 33 ++++++++++---------
 test/LuaJIT-tests/trace/phi/index             |  1 +
 2 files changed, 19 insertions(+), 15 deletions(-)
 rename test/LuaJIT-tests/{misc/phi_conv.lua => trace/phi/conv.lua} (69%)

diff --git a/test/LuaJIT-tests/misc/phi_conv.lua b/test/LuaJIT-tests/trace/phi/conv.lua
similarity index 69%
rename from test/LuaJIT-tests/misc/phi_conv.lua
rename to test/LuaJIT-tests/trace/phi/conv.lua
index 8d7bea5f..267423c2 100644
--- a/test/LuaJIT-tests/misc/phi_conv.lua
+++ b/test/LuaJIT-tests/trace/phi/conv.lua
@@ -1,18 +1,5 @@
-
 local bit = require("bit")
 
-local Rm = {}
-for i=0,16 do Rm[i] = 0 end
-
-for k=1,10 do
-  local seed = 1
-  for i=16,0,-1 do
-    seed = bit.band(seed*9069, 0x7fffffff)
-    Rm[i] = seed
-  end
-  assert(seed == 1952688301)
-end
-
 local retindex = 0
 local retdata = { 3, 1, 1, 1, 0, 3, 1, 0, 0, 2, 0, 2, 0, 0, 3, 1, 1, 1, 1 }
 
@@ -47,7 +34,23 @@ local function test()
   end
 end
 
-if jit and jit.status and jit.status() then jit.opt.start("hotloop=1") end
+do --- PHI for CONV num.int before ASTORE.
+  local Rm = {}
+  for i=0,16 do Rm[i] = 0 end

 
-test()
+  for k=1,10 do

+    local seed = 1
+    for i=16,0,-1 do

+      seed = bit.band(seed*9069, 0x7fffffff)
+      Rm[i] = seed
+    end
+    assert(seed == 1952688301)
+  end
+end
+
+do --- PHI for CONV num.int of lookup.
+  jit.opt.start("hotloop=1")
+  test()
+  jit.opt.start("hotloop=56")
+end
 
diff --git a/test/LuaJIT-tests/trace/phi/index b/test/LuaJIT-tests/trace/phi/index
index 74a07333..a72d37a0 100644
--- a/test/LuaJIT-tests/trace/phi/index
+++ b/test/LuaJIT-tests/trace/phi/index
@@ -1,3 +1,4 @@
 copyspill.lua
+conv.lua
 ref.lua
 rotate.lua