From: Raymond Hettinger <python@rcn.com>
Date: Fri, 12 Mar 2004 16:33:17 +0000 (+0000)
Subject: LIST_APPEND is predicably followed by JUMP_ABSOLUTE.
X-Git-Tag: v2.4a1~712
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fba1cfc49a7ce1b2d7e7eab93ef05c3cc81d6e1a;p=python

LIST_APPEND is predicably followed by JUMP_ABSOLUTE.
Reduces loop overhead by an additional 10%.
---

diff --git a/Python/ceval.c b/Python/ceval.c
index 71fd5471a9..d3a0053f61 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1231,7 +1231,10 @@ eval_frame(PyFrameObject *f)
 			err = PyList_Append(v, w);
 			Py_DECREF(v);
 			Py_DECREF(w);
-			if (err == 0) continue;
+			if (err == 0) {
+				PREDICT(JUMP_ABSOLUTE);
+				continue;
+			}
 			break;
 
 		case INPLACE_POWER:
@@ -2061,6 +2064,7 @@ eval_frame(PyFrameObject *f)
 				break;
 			continue;
 
+		PREDICTED_WITH_ARG(JUMP_ABSOLUTE);
 		case JUMP_ABSOLUTE:
 			JUMPTO(oparg);
 			continue;