diff --git a/Python/bytecodes.c b/Python/bytecodes.c
index 4b2db0617a0efd..2e7ffe207648d7 100644
--- a/Python/bytecodes.c
+++ b/Python/bytecodes.c
@@ -4074,7 +4074,7 @@ dummy_func(
         }
 
         op(_SETUP_TIER2_FRAME, (scratch_size/4 --)) {
-            DEOPT_IF(!_PyFrame_ConvertToTier2(tstate, frame, oparg, scratch_size) != 0);
+            DEOPT_IF(!_PyFrame_ConvertToTier2(tstate, frame, oparg, (int)(Py_ssize_t)scratch_size) != 0);
         }
 
         op(_INSERT, (unused[oparg], top -- top, unused[oparg])) {
diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
index a4ffbe9303696b..fee2b6b3d180c4 100644
--- a/Python/executor_cases.c.h
+++ b/Python/executor_cases.c.h
@@ -3591,7 +3591,7 @@
         case _SETUP_TIER2_FRAME: {
             oparg = CURRENT_OPARG();
             PyObject * scratch_size = (PyObject *)CURRENT_OPERAND();
-            if (!_PyFrame_ConvertToTier2(tstate, frame, oparg, scratch_size) != 0) goto deoptimize;
+            if (!_PyFrame_ConvertToTier2(tstate, frame, oparg, (int)(Py_ssize_t)scratch_size) != 0) goto deoptimize;
             break;
         }
 
diff --git a/Python/optimizer_analysis.c b/Python/optimizer_analysis.c
index 63272742f68f86..b8db489c4dc625 100644
--- a/Python/optimizer_analysis.c
+++ b/Python/optimizer_analysis.c
@@ -1411,7 +1411,7 @@ compile_sym_to_uops(_Py_UOpsEmitter *emitter,
         // These are for unknown stack entries.
         if (_PyOpcode_isunknown(sym->inst.opcode)) {
             // Leave it be. These are initial values from the start
-            return;
+            return 0;
         }
         inst = sym->inst;
         inst.opcode = sym->inst.opcode == INIT_FAST ? LOAD_FAST : sym->inst.opcode;
@@ -1660,7 +1660,7 @@ emit_uops_from_impure_store(
         len * sizeof(_PyUOpInstruction)
     );
 
-    emitter->curr_i += len;
+    emitter->curr_i += (int)len;
     return 0;
 }
 
@@ -1685,7 +1685,7 @@ emit_uops_from_stores(
         0,
         0,
         // Should not use more than 20% of the space for common expressions.
-        (writebuffer_end - trace_writebuffer) / 5,
+        (int)((writebuffer_end - trace_writebuffer) / 5),
         sym_store,
         // One wasted object, but it's fine I'd rather not use that to prevent logic bugs.
         (PyObject **)(writebuffer_end - 1),