Remove materialized objects on stack unwind.

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index f7c8e65a06a2de4298061a61ac1c74de49abfe0c..48fc3646017041cdae3fa74198dc271e4784a6a3 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -1131,7 +1131,8 @@ void CEntryStub::Generate(MacroAssembler* masm) {
 
   // Ask the runtime for help to determine the handler. This will set r3 to
   // contain the current pending exception, don't clobber it.
-  ExternalReference find_handler(Runtime::kFindExceptionHandler, isolate());
+  ExternalReference find_handler(Runtime::kUnwindFindExceptionHandler,
+                                 isolate());
   {
     FrameScope scope(masm, StackFrame::MANUAL);
     __ PrepareCallCFunction(3, 0, r3);