hg: graal/graal-compiler: Perform GVN in the canonicalizer also on leaf nodes.

[doug.simon at oracle.com]

Changeset: cce1287c1778
Author:    Thomas Wuerthinger <thomas.wuerthinger at oracle.com>
Date:      2015-12-13 23:10 +0100
URL:       http://hg.openjdk.java.net/graal/graal-compiler/rev/cce1287c1778

Perform GVN in the canonicalizer also on leaf nodes.

! graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Graph.java
! graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/CanonicalizerPhase.java
! graal/com.oracle.graal.virtual/src/com/oracle/graal/virtual/phases/ea/EffectsPhase.java