https://github.com/python/cpython/commit/bda121862e7d7f4684d9f0281f7d1f408c0c740c
commit: bda121862e7d7f4684d9f0281f7d1f408c0c740c
branch: main
author: Noam Cohen <[email protected]>
committer: Fidget-Spinner <[email protected]>
date: 2025-06-24T03:42:09+08:00
summary:
gh-131798: Optimize `_UNARY_NEGATIVE` (GH-135223)
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2025-06-06-19-17-22.gh-issue-131798.XoV8Eb.rst
M Lib/test/test_capi/test_opt.py
M Python/optimizer_bytecodes.c
M Python/optimizer_cases.c.h
diff --git a/Lib/test/test_capi/test_opt.py b/Lib/test/test_capi/test_opt.py
index 0a85b19e06f158..e4c9a463855a69 100644
--- a/Lib/test/test_capi/test_opt.py
+++ b/Lib/test/test_capi/test_opt.py
@@ -2432,6 +2432,24 @@ def testfunc(n):
self.assertIn("_POP_TOP_FLOAT", uops)
+ def test_unary_negative_long_float_type(self):
+ def testfunc(n):
+ for _ in range(n):
+ a = 9397
+ f = 9397.0
+ x = -a + -a
+ y = -f + -f
+
+ testfunc(TIER2_THRESHOLD)
+
+ ex = get_first_executor(testfunc)
+ self.assertIsNotNone(ex)
+ uops = get_opnames(ex)
+
+ self.assertNotIn("_GUARD_TOS_INT", uops)
+ self.assertNotIn("_GUARD_NOS_INT", uops)
+ self.assertNotIn("_GUARD_TOS_FLOAT", uops)
+ self.assertNotIn("_GUARD_NOS_FLOAT", uops)
def global_identity(x):
return x
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2025-06-06-19-17-22.gh-issue-131798.XoV8Eb.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2025-06-06-19-17-22.gh-issue-131798.XoV8Eb.rst
new file mode 100644
index 00000000000000..6a9d9c683f9a8c
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2025-06-06-19-17-22.gh-issue-131798.XoV8Eb.rst
@@ -0,0 +1 @@
+Optimize ``_UNARY_NEGATIVE`` in JIT-compiled code.
diff --git a/Python/optimizer_bytecodes.c b/Python/optimizer_bytecodes.c
index f8fbaf232ffa2e..f8a0484bdc2b04 100644
--- a/Python/optimizer_bytecodes.c
+++ b/Python/optimizer_bytecodes.c
@@ -452,7 +452,13 @@ dummy_func(void) {
res = sym_new_compact_int(ctx);
}
else {
- res = sym_new_not_null(ctx);
+ PyTypeObject *type = sym_get_type(value);
+ if (type == &PyLong_Type || type == &PyFloat_Type) {
+ res = sym_new_type(ctx, type);
+ }
+ else {
+ res = sym_new_not_null(ctx);
+ }
}
}
diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h
index 1e581afadc9569..10767ccdbd57f5 100644
--- a/Python/optimizer_cases.c.h
+++ b/Python/optimizer_cases.c.h
@@ -190,7 +190,13 @@
res = sym_new_compact_int(ctx);
}
else {
- res = sym_new_not_null(ctx);
+ PyTypeObject *type = sym_get_type(value);
+ if (type == &PyLong_Type || type == &PyFloat_Type) {
+ res = sym_new_type(ctx, type);
+ }
+ else {
+ res = sym_new_not_null(ctx);
+ }
}
stack_pointer[-1] = res;
break;
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