Author: Richard Plangger <planri...@gmail.com>
Branch: s390x-backend
Changeset: r82043:897d3634e91c
Date: 2016-02-02 18:42 +0100
http://bitbucket.org/pypy/pypy/changeset/897d3634e91c/
Log: added an explicit memory barrier after compare and swap
diff --git a/rpython/jit/backend/zarch/callbuilder.py
b/rpython/jit/backend/zarch/callbuilder.py
--- a/rpython/jit/backend/zarch/callbuilder.py
+++ b/rpython/jit/backend/zarch/callbuilder.py
@@ -221,6 +221,8 @@
self.mc.BRC(c.NE, l.imm(retry_label - self.mc.currpos())) # retry if
failed
# CSG performs a serialization
+ # but be sure (testing)
+ self.mc.sync()
self.mc.CGHI(r.r13, l.imm0)
b1_location = self.mc.currpos()
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