# HG changeset patch
# User Christian Wimmer <christian.wimmer@oracle.com>
# Date 1452287452 28800
# Node ID 50079bd51344628b9adfd7885676476d5915ee00
# Parent  760c71be4a4a22adba80dc9b3c59bcf410a0dd28
Convert deoptimize to guard also when deoptimize is behind (possibly nested) loop exit

diff -r 760c71be4a4a -r 50079bd51344 graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java	Wed Jan 06 18:18:22 2016 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java	Fri Jan 08 13:10:52 2016 -0800
@@ -155,6 +155,12 @@
     }
 
     private void visitDeoptBegin(AbstractBeginNode deoptBegin, DeoptimizationAction deoptAction, DeoptimizationReason deoptReason, JavaConstant speculation, StructuredGraph graph) {
+        if (deoptBegin.predecessor() instanceof AbstractBeginNode) {
+            /* Walk up chains of LoopExitNodes to the "real" BeginNode that leads to deoptimization. */
+            visitDeoptBegin((AbstractBeginNode) deoptBegin.predecessor(), deoptAction, deoptReason, speculation, graph);
+            return;
+        }
+
         if (deoptBegin instanceof AbstractMergeNode) {
             AbstractMergeNode mergeNode = (AbstractMergeNode) deoptBegin;
             Debug.log("Visiting %s", mergeNode);