diff a/src/hotspot/cpu/ppc/ppc.ad b/src/hotspot/cpu/ppc/ppc.ad
--- a/src/hotspot/cpu/ppc/ppc.ad
+++ b/src/hotspot/cpu/ppc/ppc.ad
@@ -1629,15 +1629,10 @@
   }
 
   C->output()->set_frame_complete(__ offset());
 }
 
-uint MachPrologNode::size(PhaseRegAlloc *ra_) const {
-  // Variable size. determine dynamically.
-  return MachNode::size(ra_);
-}
-
 int MachPrologNode::reloc() const {
   // Return number of relocatable values contained in this instruction.
   return 1; // 1 reloc entry for load_const(toc).
 }
 
@@ -1692,15 +1687,10 @@
     }
     __ safepoint_poll(*code_stub, temp, true /* at_return */, true /* in_nmethod */);
   }
 }
 
-uint MachEpilogNode::size(PhaseRegAlloc *ra_) const {
-  // Variable size. Determine dynamically.
-  return MachNode::size(ra_);
-}
-
 int MachEpilogNode::reloc() const {
   // Return number of relocatable values contained in this instruction.
   return 1; // 1 for load_from_polling_page.
 }
 
@@ -2046,10 +2036,22 @@
 uint BoxLockNode::size(PhaseRegAlloc *ra_) const {
   // BoxLockNode is not a MachNode, so we can't just call MachNode::size(ra_).
   return 4;
 }
 
+#ifndef PRODUCT
+void MachVEPNode::format(PhaseRegAlloc* ra_, outputStream* st) const
+{
+  Unimplemented();
+}
+#endif
+
+void MachVEPNode::emit(C2_MacroAssembler *masm, PhaseRegAlloc* ra_) const
+{
+  Unimplemented();
+}
+
 #ifndef PRODUCT
 void MachUEPNode::format(PhaseRegAlloc *ra_, outputStream *st) const {
   st->print_cr("---- MachUEPNode ----");
   st->print_cr("...");
 }
@@ -2059,15 +2061,10 @@
   // This is the unverified entry point.
   __ ic_check(CodeEntryAlignment);
   // Argument is valid and klass is as expected, continue.
 }
 
-uint MachUEPNode::size(PhaseRegAlloc *ra_) const {
-  // Variable size. Determine dynamically.
-  return MachNode::size(ra_);
-}
-
 //=============================================================================
 
 %} // interrupt source
 
 source_hpp %{ // Header information of the source block.