diff -r 376792a6e9da -r 6a880e576856 src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp
--- a/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp	Wed Apr 11 10:05:02 2018 -0400
+++ b/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp	Wed Apr 11 16:07:42 2018 +0200
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2015, 2017, SAP SE. All rights reserved.
+ * Copyright (c) 2015, 2018, SAP SE. 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
@@ -25,6 +25,7 @@
 
 #include "precompiled.hpp"
 #include "asm/macroAssembler.inline.hpp"
+#include "gc/shared/barrierSetAssembler.hpp"
 #include "interpreter/bytecodeHistogram.hpp"
 #include "interpreter/interpreter.hpp"
 #include "interpreter/interpreterRuntime.hpp"
@@ -402,7 +403,7 @@
      break;
   case T_OBJECT:
     // JNIHandles::resolve result.
-    __ resolve_jobject(R3_RET, R11_scratch1, R12_scratch2, /* needs_frame */ true); // kills R31
+    __ resolve_jobject(R3_RET, R11_scratch1, R31, /* needs_frame */ true); // kills R31
     break;
   case T_FLOAT:
      break;
@@ -504,59 +505,50 @@
   //   regular method entry code to generate the NPE.
   //
 
-  if (UseG1GC) {
-    address entry = __ pc();
+  address entry = __ pc();
 
-    const int referent_offset = java_lang_ref_Reference::referent_offset;
-    guarantee(referent_offset > 0, "referent offset not initialized");
+  const int referent_offset = java_lang_ref_Reference::referent_offset;
+  guarantee(referent_offset > 0, "referent offset not initialized");
 
-    Label slow_path;
+  Label slow_path;
 
-    // Debugging not possible, so can't use __ skip_if_jvmti_mode(slow_path, GR31_SCRATCH);
+  // Debugging not possible, so can't use __ skip_if_jvmti_mode(slow_path, GR31_SCRATCH);
 
-    // In the G1 code we don't check if we need to reach a safepoint. We
-    // continue and the thread will safepoint at the next bytecode dispatch.
-
-    // If the receiver is null then it is OK to jump to the slow path.
-    __ ld(R3_RET, Interpreter::stackElementSize, R15_esp); // get receiver
+  // In the G1 code we don't check if we need to reach a safepoint. We
+  // continue and the thread will safepoint at the next bytecode dispatch.
 
-    // Check if receiver == NULL and go the slow path.
-    __ cmpdi(CCR0, R3_RET, 0);
-    __ beq(CCR0, slow_path);
+  // If the receiver is null then it is OK to jump to the slow path.
+  __ ld(R3_RET, Interpreter::stackElementSize, R15_esp); // get receiver
 
-    // Load the value of the referent field.
-    __ load_heap_oop(R3_RET, referent_offset, R3_RET);
+  // Check if receiver == NULL and go the slow path.
+  __ cmpdi(CCR0, R3_RET, 0);
+  __ beq(CCR0, slow_path);
 
-    // Generate the G1 pre-barrier code to log the value of
-    // the referent field in an SATB buffer. Note with
-    // these parameters the pre-barrier does not generate
-    // the load of the previous value.
+  // Load the value of the referent field.
+  BarrierSetAssembler *bs = Universe::heap()->barrier_set()->barrier_set_assembler();
+  bs->load_at(_masm, IN_HEAP | ON_WEAK_OOP_REF, T_OBJECT,
+                    R3_RET, referent_offset, R3_RET,
+                    /* non-volatile temp */ R31, R11_scratch1, true);
 
-    // Restore caller sp for c2i case.
-#ifdef ASSERT
-      __ ld(R9_ARG7, 0, R1_SP);
-      __ ld(R10_ARG8, 0, R21_sender_SP);
-      __ cmpd(CCR0, R9_ARG7, R10_ARG8);
-      __ asm_assert_eq("backlink", 0x544);
-#endif // ASSERT
-    __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
+  // Generate the G1 pre-barrier code to log the value of
+  // the referent field in an SATB buffer. Note with
+  // these parameters the pre-barrier does not generate
+  // the load of the previous value.
 
-    __ g1_write_barrier_pre(noreg,         // obj
-                            noreg,         // offset
-                            R3_RET,        // pre_val
-                            R11_scratch1,  // tmp
-                            R12_scratch2,  // tmp
-                            true);         // needs_frame
+  // Restore caller sp for c2i case.
+#ifdef ASSERT
+  __ ld(R9_ARG7, 0, R1_SP);
+  __ ld(R10_ARG8, 0, R21_sender_SP);
+  __ cmpd(CCR0, R9_ARG7, R10_ARG8);
+  __ asm_assert_eq("backlink", 0x544);
+#endif // ASSERT
+  __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
 
-    __ blr();
+  __ blr();
 
-    // Generate regular method entry.
-    __ bind(slow_path);
-    __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals), R11_scratch1);
-    return entry;
-  }
-
-  return NULL;
+  __ bind(slow_path);
+  __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals), R11_scratch1);
+  return entry;
 }
 
 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {