Author: Remi Meier <remi.me...@gmail.com>
Branch: stmgc-c4
Changeset: r65774:ca6cec2712bf
Date: 2013-07-29 11:28 +0200
http://bitbucket.org/pypy/pypy/changeset/ca6cec2712bf/
Log: add failing test for repeating a read_barrier after a write_barrier
diff --git a/rpython/jit/backend/llsupport/test/test_stmrewrite.py
b/rpython/jit/backend/llsupport/test/test_stmrewrite.py
--- a/rpython/jit/backend/llsupport/test/test_stmrewrite.py
+++ b/rpython/jit/backend/llsupport/test/test_stmrewrite.py
@@ -64,6 +64,26 @@
jump()
""", t=NULL)
+ def test_invalidate_read_status_after_write(self):
+ self.check_rewrite("""
+ [p0]
+ p1 = same_as(p0)
+ p2 = same_as(p0)
+ p4 = getfield_gc(p1, descr=tzdescr)
+ setfield_gc(p2, p0, descr=tzdescr)
+ p5 = getfield_gc(p1, descr=tzdescr)
+ """, """
+ [p0]
+ p1 = same_as(p0)
+ p2 = same_as(p0)
+ cond_call_stm_b(p1, descr=P2Rdescr)
+ p4 = getfield_gc(p1, descr=tzdescr)
+ cond_call_stm_b(p2, descr=P2Wdescr)
+ setfield_gc(p2, p0, descr=tzdescr)
+ cond_call_stm_b(p1, descr=P2Rdescr)
+ p5 = getfield_gc(p1, descr=tzdescr)
+ """)
+
def test_rewrite_write_barrier_after_malloc(self):
self.check_rewrite("""
[p1, p3]
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