hg: graal/graal-compiler: traverse usages in branch probability node only once for fixed guard and conditional nodes.

[doug.simon at oracle.com]

Changeset: 1f75da663952
Author:    Manuel Rigger <rigger.manuel at gmail.com>
Date:      2016-02-02 15:54 +0100
URL:       http://hg.openjdk.java.net/graal/graal-compiler/rev/1f75da663952

traverse usages in branch probability node only once for fixed guard and conditional nodes.

! graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/BranchProbabilityNode.java