src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/Stub.java

rev 56282 : [mq]: graal

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 2018, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 119,134 ****
      public EconomicSet<Register> getDestroyedCallerRegisters() {
          assert destroyedCallerRegisters != null : "not yet initialized";
          return destroyedCallerRegisters;
      }
  
!     /**
!      * Determines if this stub preserves all registers apart from those it
!      * {@linkplain #getDestroyedCallerRegisters() destroys}.
!      */
!     public boolean preservesRegisters() {
!         return true;
      }
  
      protected final OptionValues options;
      protected final HotSpotProviders providers;
  
--- 119,130 ----
      public EconomicSet<Register> getDestroyedCallerRegisters() {
          assert destroyedCallerRegisters != null : "not yet initialized";
          return destroyedCallerRegisters;
      }
  
!     public boolean shouldSaveRegistersAroundCalls() {
!         return linkage.getEffect() == HotSpotForeignCallLinkage.RegisterEffect.COMPUTES_REGISTERS_KILLED;
      }
  
      protected final OptionValues options;
      protected final HotSpotProviders providers;