PPC: Fix constant pools for tail calls.

src/ppc/macro-assembler-ppc.h

Index: src/ppc/macro-assembler-ppc.h
diff --git a/src/ppc/macro-assembler-ppc.h b/src/ppc/macro-assembler-ppc.h
index c96abb362b65dd0d35652ab421b2502b8cbc45c5..db3ad84ffccec5ea1f02148772bd590cf0592d39 100644
--- a/src/ppc/macro-assembler-ppc.h
+++ b/src/ppc/macro-assembler-ppc.h
@@ -342,6 +342,10 @@ class MacroAssembler : public Assembler {
   void PushFixedFrame(Register marker_reg = no_reg);
   void PopFixedFrame(Register marker_reg = no_reg);
 
+  // Restore caller's frame pointer and return address prior to being
+  // overwritten by tail call stack preparation.
+  void RestoreFrameStateForTailCall();
+
   // Push and pop the registers that can hold pointers, as defined by the
   // RegList constant kSafepointSavedRegisters.
   void PushSafepointRegisters();