In progress

python · savannahostrowski · Jul 26, 2025 · Jul 21, 2025 · Jul 23, 2025 · Jul 24, 2025
commit 2c046f1e0acc6fbddc72f750c05a3f09809e6519
diff --git a/Lib/test/test_capi/test_opt.py b/Lib/test/test_capi/test_opt.py
@@ -843,6 +843,7 @@ def testfunc(n):
         self.assertLessEqual(len(guard_tos_unicode_count), 1)
         self.assertLessEqual(len(guard_nos_unicode_count), 1)
         self.assertIn("_COMPARE_OP_STR", uops)
+        self.assertNotIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
 
     def test_type_inconsistency(self):
         ns = {}
@@ -1612,7 +1613,7 @@ def f(n):
         # But all of the appends we care about are still there:
         self.assertEqual(uops.count("_CALL_LIST_APPEND"), len("ABCDEFG"))
 
-    def test_compare_pop_two_load_const_inline_borrow(self):
+    def test_compare_pop_two_load_const_inline_borrow_int(self):
         def testfunc(n):
             x = 0
             for _ in range(n):
@@ -1629,6 +1630,23 @@ def testfunc(n):
         self.assertNotIn("_COMPARE_OP_INT", uops)
         self.assertNotIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
 
+    def test_compare_pop_two_load_const_inline_borrow_float(self):
+        def testfunc(n):
+            x = 0
+            for _ in range(n):
+                a = 10.0
+                b = 10.0
+                if a == b:
+                    x += 1
+            return x
+
+        res, ex = self._run_with_optimizer(testfunc, TIER2_THRESHOLD)
+        self.assertEqual(res, TIER2_THRESHOLD)
+        self.assertIsNotNone(ex)
+        uops = get_opnames(ex)
+        self.assertNotIn("_COMPARE_OP_FLOAT", uops)
+        self.assertNotIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
+
     def test_to_bool_bool_contains_op_set(self):
         """
         Test that _TO_BOOL_BOOL is removed from code like:
@@ -1953,6 +1971,7 @@ def testfunc(n):
         self.assertIn("_UNPACK_SEQUENCE_TWO_TUPLE", uops)
         self.assertNotIn("_COMPARE_OP_INT", uops)
         self.assertNotIn("_GUARD_IS_TRUE_POP", uops)
+        self.assertNotIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
 
     def test_call_len(self):
         def testfunc(n):
@@ -2071,6 +2090,7 @@ def testfunc(n):
         self.assertIn("_BINARY_OP_SUBSCR_TUPLE_INT", uops)
         self.assertNotIn("_COMPARE_OP_INT", uops)
         self.assertNotIn("_GUARD_IS_TRUE_POP", uops)
+        self.assertNotIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
 
     def test_call_isinstance_guards_removed(self):
         def testfunc(n):

@@ -430,31 +430,17 @@ dummy_func(void) {
     }
 
     op(_COMPARE_OP_INT, (left, right -- res)) {
-        if (sym_is_const(ctx, left) && sym_is_const(ctx, right)) {
-            assert(PyLong_CheckExact(sym_get_const(ctx, left)));
-            assert(PyLong_CheckExact(sym_get_const(ctx, right)));
-            PyObject *tmp = PyObject_RichCompare(sym_get_const(ctx, left),
-                                                 sym_get_const(ctx, right),
-                                                 oparg >> 5);
-            if (tmp == NULL) {
-                goto error;
-            }
-            assert(PyBool_Check(tmp));
-            assert(_Py_IsImmortal(tmp));
-            REPLACE_OP(this_instr, _POP_TWO_LOAD_CONST_INLINE_BORROW, 0, (uintptr_t)tmp);
-            res = sym_new_const(ctx, tmp);
-            Py_DECREF(tmp);
-        }
-        else {
-            res = sym_new_type(ctx, &PyBool_Type);
-        }
+        REPLACE_OPCODE_IF_EVALUATES_PURE(left, right);
+        res = sym_new_type(ctx, &PyBool_Type);
     }
 
     op(_COMPARE_OP_FLOAT, (left, right -- res)) {
+        REPLACE_OPCODE_IF_EVALUATES_PURE(left, right);
         res = sym_new_type(ctx, &PyBool_Type);
     }
 
     op(_COMPARE_OP_STR, (left, right -- res)) {
+        REPLACE_OPCODE_IF_EVALUATES_PURE(left, right);
         res = sym_new_type(ctx, &PyBool_Type);
     }
 

diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h