--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/LIRGeneratorTool.java	2017-11-03 23:57:00.292066682 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/LIRGeneratorTool.java	2017-11-03 23:56:59.964052003 -0700
@@ -22,6 +22,7 @@
  */
 package org.graalvm.compiler.lir.gen;
 
+import jdk.vm.ci.code.RegisterConfig;
 import org.graalvm.compiler.core.common.CompressEncoding;
 import org.graalvm.compiler.core.common.LIRKind;
 import org.graalvm.compiler.core.common.calc.Condition;
@@ -109,6 +110,8 @@
 
     LIRGenerationResult getResult();
 
+    RegisterConfig getRegisterConfig();
+
     boolean hasBlockEnd(AbstractBlockBase<?> block);
 
     MoveFactory getMoveFactory();