pythonGH-111848: Convert remaining jumps to deopts into tier 2 code. (p…

…ythonGH-112045)
arhadthedev · Nov 14, 2023 · a519b87 · a519b87
1 parent b11c443
commit a519b87
Show file tree

Hide file tree

Showing 7 changed files with 184 additions and 129 deletions.
diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
diff --git a/Lib/test/test_capi/test_misc.py b/Lib/test/test_capi/test_misc.py
@@ -2610,7 +2610,7 @@ def testfunc(n):
         ex = get_first_executor(testfunc)
         self.assertIsNotNone(ex)
         uops = {opname for opname, _, _ in ex}
-        self.assertIn("_POP_JUMP_IF_FALSE", uops)
+        self.assertIn("_GUARD_IS_TRUE_POP", uops)
 
     def test_pop_jump_if_none(self):
         def testfunc(a):
@@ -2625,7 +2625,7 @@ def testfunc(a):
         ex = get_first_executor(testfunc)
         self.assertIsNotNone(ex)
         uops = {opname for opname, _, _ in ex}
-        self.assertIn("_POP_JUMP_IF_TRUE", uops)
+        self.assertIn("_GUARD_IS_NOT_NONE_POP", uops)
 
     def test_pop_jump_if_not_none(self):
         def testfunc(a):
@@ -2641,7 +2641,7 @@ def testfunc(a):
         ex = get_first_executor(testfunc)
         self.assertIsNotNone(ex)
         uops = {opname for opname, _, _ in ex}
-        self.assertIn("_POP_JUMP_IF_FALSE", uops)
+        self.assertIn("_GUARD_IS_NONE_POP", uops)
 
     def test_pop_jump_if_true(self):
         def testfunc(n):
@@ -2656,7 +2656,7 @@ def testfunc(n):
         ex = get_first_executor(testfunc)
         self.assertIsNotNone(ex)
         uops = {opname for opname, _, _ in ex}
-        self.assertIn("_POP_JUMP_IF_TRUE", uops)
+        self.assertIn("_GUARD_IS_FALSE_POP", uops)
 
     def test_jump_backward(self):
         def testfunc(n):
@@ -2806,7 +2806,7 @@ def testfunc(n):
         ex = get_first_executor(testfunc)
         self.assertIsNotNone(ex)
         uops = {opname for opname, _, _ in ex}
-        self.assertIn("_POP_JUMP_IF_TRUE", uops)
+        self.assertIn("_GUARD_IS_FALSE_POP", uops)
 
 
 if __name__ == "__main__":

diff --git a/Python/abstract_interp_cases.c.h b/Python/abstract_interp_cases.c.h
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
@@ -2368,7 +2368,7 @@ dummy_func(
             goto enter_tier_one;
         }
 
-        inst(POP_JUMP_IF_FALSE, (unused/1, cond -- )) {
+       replaced op(_POP_JUMP_IF_FALSE, (unused/1, cond -- )) {
             assert(PyBool_Check(cond));
             int flag = Py_IsFalse(cond);
             #if ENABLE_SPECIALIZATION
@@ -2377,7 +2377,7 @@ dummy_func(
             JUMPBY(oparg * flag);
         }
 
-        inst(POP_JUMP_IF_TRUE, (unused/1, cond -- )) {
+        replaced op(_POP_JUMP_IF_TRUE, (unused/1, cond -- )) {
             assert(PyBool_Check(cond));
             int flag = Py_IsTrue(cond);
             #if ENABLE_SPECIALIZATION
@@ -2396,9 +2396,13 @@ dummy_func(
             }
         }
 
-        macro(POP_JUMP_IF_NONE) = _IS_NONE + POP_JUMP_IF_TRUE;
+        macro(POP_JUMP_IF_TRUE) = _POP_JUMP_IF_TRUE;
 
-        macro(POP_JUMP_IF_NOT_NONE) = _IS_NONE + POP_JUMP_IF_FALSE;
+        macro(POP_JUMP_IF_FALSE) = _POP_JUMP_IF_FALSE;
+
+        macro(POP_JUMP_IF_NONE) = _IS_NONE + _POP_JUMP_IF_TRUE;
+
+        macro(POP_JUMP_IF_NOT_NONE) = _IS_NONE + _POP_JUMP_IF_FALSE;
 
         inst(JUMP_BACKWARD_NO_INTERRUPT, (--)) {
             /* This bytecode is used in the `yield from` or `await` loop.
@@ -3963,16 +3967,23 @@ dummy_func(
 
         ///////// Tier-2 only opcodes /////////
 
-        op(_POP_JUMP_IF_FALSE, (flag -- )) {
-            if (Py_IsFalse(flag)) {
-                next_uop = current_executor->trace + oparg;
-            }
+        op (_GUARD_IS_TRUE_POP, (flag -- )) {
+            DEOPT_IF(Py_IsFalse(flag));
+            assert(Py_IsTrue(flag));
         }
 
-        op(_POP_JUMP_IF_TRUE, (flag -- )) {
-            if (Py_IsTrue(flag)) {
-                next_uop = current_executor->trace + oparg;
-            }
+        op (_GUARD_IS_FALSE_POP, (flag -- )) {
+            DEOPT_IF(Py_IsTrue(flag));
+            assert(Py_IsFalse(flag));
+        }
+
+        op (_GUARD_IS_NONE_POP, (val -- )) {
+            DEOPT_IF(!Py_IsNone(val));
+        }
+
+        op (_GUARD_IS_NOT_NONE_POP, (val -- )) {
+            DEOPT_IF(Py_IsNone(val));
+            Py_DECREF(val);
         }
 
         op(_JUMP_TO_TOP, (--)) {