PPC: Vector ICs: Get rid of stack arguments on ia32 transitioning stores.

Port 2d4aeaad

Original commit message:
    The stack manipulation was expensive. Two virtual registers are better.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1390343004

Cr-Commit-Position: refs/heads/master@{#31213}

src/ic/ppc/handler-compiler-ppc.cc

@@ -355,8 +355,8 @@ void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
 }
 
 
-void NamedStoreHandlerCompiler::GeneratePushMap(Register map_reg,
-                                                Register scratch) {
+void NamedStoreHandlerCompiler::RearrangeVectorAndSlot(
+    Register current_map, Register destination_map) {
   DCHECK(false);  // Not implemented.
 }
 

src/ppc/interface-descriptors-ppc.cc

@@ -78,14 +78,6 @@ const Register GrowArrayElementsDescriptor::ObjectRegister() { return r3; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return r6; }
 
 
-void VectorStoreTransitionDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {ReceiverRegister(), NameRegister(),   ValueRegister(),
-                          SlotRegister(),     VectorRegister(), MapRegister()};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {r5};