Issue #11244: Remove outdated peepholer check that was preventing the peepholer from folding -0 and -0.0. Thanks Eugene Toder for the patch.

1 files changed, 2 insertions, 4 deletions

diff --git a/Python/peephole.c b/Python/peephole.c
index 4bc65dcc31..69f61617f8 100644
--- a/Python/peephole.c
+++ b/Python/peephole.c
@@ -238,7 +238,7 @@ fold_binops_on_constants(unsigned char *codestr, PyObject *consts, PyObject **ob
 static int
 fold_unaryops_on_constants(unsigned char *codestr, PyObject *consts, PyObject *v)
 {
-    PyObject *newconst=NULL/*, *v*/;
+    PyObject *newconst;
     Py_ssize_t len_consts;
     int opcode;
 
@@ -250,9 +250,7 @@ fold_unaryops_on_constants(unsigned char *codestr, PyObject *consts, PyObject *v
     opcode = codestr[3];
     switch (opcode) {
         case UNARY_NEGATIVE:
-            /* Preserve the sign of -0.0 */
-            if (PyObject_IsTrue(v) == 1)
-                newconst = PyNumber_Negative(v);
+            newconst = PyNumber_Negative(v);
             break;
         case UNARY_INVERT:
             newconst = PyNumber_Invert(v);