diff -r 0152ad7b38b8 -r 6df94ce3ab2f src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotForeignCallLinkage.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotForeignCallLinkage.java	Tue Sep 24 08:54:08 2019 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotForeignCallLinkage.java	Tue Sep 24 12:47:15 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,13 +24,13 @@
 
 package org.graalvm.compiler.hotspot;
 
-import jdk.vm.ci.meta.InvokeTarget;
-
 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
 import org.graalvm.compiler.core.target.Backend;
 import org.graalvm.compiler.hotspot.stubs.Stub;
 import jdk.internal.vm.compiler.word.LocationIdentity;
 
+import jdk.vm.ci.meta.InvokeTarget;
+
 /**
  * The details required to link a HotSpot runtime or stub call.
  */
@@ -42,8 +42,8 @@
      * {@linkplain ForeignCallLinkage#getTemporaries() temporary} registers.
      */
     enum RegisterEffect {
-        DESTROYS_REGISTERS,
-        PRESERVES_REGISTERS
+        DESTROYS_ALL_CALLER_SAVE_REGISTERS,
+        COMPUTES_REGISTERS_KILLED
     }
 
     /**
@@ -118,6 +118,8 @@
 
     void setCompiledStub(Stub stub);
 
+    RegisterEffect getEffect();
+
     /**
      * Determines if this is a call to a compiled {@linkplain Stub stub}.
      */