[pypy-commit] pypy optresult: add a fast path to avoid issues with JitVirtualRef

[fijal]

Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: optresult
Changeset: r78110:69624489a478
Date: 2015-06-15 13:02 +0200
http://bitbucket.org/pypy/pypy/changeset/69624489a478/

Log:	add a fast path to avoid issues with JitVirtualRef

diff --git a/rpython/jit/backend/llsupport/descr.py b/rpython/jit/backend/llsupport/descr.py
--- a/rpython/jit/backend/llsupport/descr.py
+++ b/rpython/jit/backend/llsupport/descr.py
@@ -130,8 +130,10 @@
             cls = llmemory.cast_adr_to_ptr(
                 heaptracker.int2adr(self.parent_descr.get_vtable()),
                 lltype.Ptr(rclass.OBJECT_VTABLE))
-            assert rclass.ll_isinstance(lltype.cast_opaque_ptr(
-                rclass.OBJECTPTR, struct), cls)
+            tpptr = lltype.cast_opaque_ptr(rclass.OBJECTPTR, struct).typeptr
+            if tpptr != cls:
+                assert rclass.ll_isinstance(lltype.cast_opaque_ptr(
+                    rclass.OBJECTPTR, struct), cls)
         else:
             pass