Make _PyFrame_Copy inline for the JIT

Author: markshannon

Include/internal/pycore_frame.h

@@ -110,7 +110,15 @@ _PyFrame_NumSlotsForCodeObject(PyCodeObject *code)
     return code->co_framesize - FRAME_SPECIALS_SIZE;
 }
 
-void _PyFrame_Copy(_PyInterpreterFrame *src, _PyInterpreterFrame *dest);
+static inline void _PyFrame_Copy(_PyInterpreterFrame *src, _PyInterpreterFrame *dest)
+{
+    assert(src->stacktop >= _PyFrame_GetCode(src)->co_nlocalsplus);
+    Py_ssize_t size = ((char*)&src->localsplus[src->stacktop]) - (char *)src;
+    memcpy(dest, src, size);
+    // Don't leave a dangling pointer to the old frame when creating generators
+    // and coroutines:
+    dest->previous = NULL;
+}
 
 /* Consumes reference to func and locals.
    Does not initialize frame->previous, which happens

Python/frame.c

@@ -53,18 +53,6 @@ _PyFrame_MakeAndSetFrameObject(_PyInterpreterFrame *frame)
     return f;
 }
 
-void
-_PyFrame_Copy(_PyInterpreterFrame *src, _PyInterpreterFrame *dest)
-{
-    assert(src->stacktop >= _PyFrame_GetCode(src)->co_nlocalsplus);
-    Py_ssize_t size = ((char*)&src->localsplus[src->stacktop]) - (char *)src;
-    memcpy(dest, src, size);
-    // Don't leave a dangling pointer to the old frame when creating generators
-    // and coroutines:
-    dest->previous = NULL;
-}
-
-
 static void
 take_ownership(PyFrameObject *f, _PyInterpreterFrame *frame)
 {