Mercurial > hg > graal-jvmci-8

diff src/share/vm/opto/graphKit.hpp @ 12169:29aa8936f03c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8023597: Optimize G1 barriers code for unsafe load_store Summary: Avoid loading old values in G1 pre-barriers for inlined unsafe load_store nodes. Reviewed-by: kvn, tonyp Contributed-by: Martin Doerr <martin.doerr@sap.com>
author kvn
date Wed, 28 Aug 2013 11:22:43 +0200
parents beebba0acc11
children edb5ab0f3fe5
line wrap: on
line diff
--- a/src/share/vm/opto/graphKit.hpp	Tue Aug 27 21:16:54 2013 +0200
+++ b/src/share/vm/opto/graphKit.hpp	Wed Aug 28 11:22:43 2013 +0200
@@ -695,6 +695,10 @@
   void write_barrier_post(Node *store, Node* obj,
                           Node* adr,  uint adr_idx, Node* val, bool use_precise);
 
+  // Allow reordering of pre-barrier with oop store and/or post-barrier.
+  // Used for load_store operations which loads old value.
+  bool can_move_pre_barrier() const;
+
   // G1 pre/post barriers
   void g1_write_barrier_pre(bool do_load,
                             Node* obj,