PPC: Vector ICs: Introduce Store and KeyedStore IC code stubs.

Port a86384f1

Original commit message:
Also introduce new interface descriptors for the trampoline and full
versions of those stubs.

Currently, the stubs aren't functional.

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

Review URL: https://codereview.chromium.org/1159483003

Cr-Commit-Position: refs/heads/master@{#28636}

src/ppc/code-stubs-ppc.cc

@@ -4844,6 +4844,58 @@ void KeyedLoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
 }
 
 
+void VectorStoreICTrampolineStub::Generate(MacroAssembler* masm) {
+  EmitLoadTypeFeedbackVector(masm, VectorStoreICDescriptor::VectorRegister());
+  VectorStoreICStub stub(isolate(), state());
+  stub.GenerateForTrampoline(masm);
+}
+
+
+void VectorKeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) {
+  EmitLoadTypeFeedbackVector(masm, VectorStoreICDescriptor::VectorRegister());
+  VectorKeyedStoreICStub stub(isolate(), state());
+  stub.GenerateForTrampoline(masm);
+}
+
+
+void VectorStoreICStub::Generate(MacroAssembler* masm) {
+  GenerateImpl(masm, false);
+}
+
+
+void VectorStoreICStub::GenerateForTrampoline(MacroAssembler* masm) {
+  GenerateImpl(masm, true);
+}
+
+
+void VectorStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
+  Label miss;
+
+  // TODO(mvstanton): Implement.
+  __ bind(&miss);
+  StoreIC::GenerateMiss(masm);
+}
+
+
+void VectorKeyedStoreICStub::Generate(MacroAssembler* masm) {
+  GenerateImpl(masm, false);
+}
+
+
+void VectorKeyedStoreICStub::GenerateForTrampoline(MacroAssembler* masm) {
+  GenerateImpl(masm, true);
+}
+
+
+void VectorKeyedStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
+  Label miss;
+
+  // TODO(mvstanton): Implement.
+  __ bind(&miss);
+  KeyedStoreIC::GenerateMiss(masm);
+}
+
+
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (masm->isolate()->function_entry_hook() != NULL) {
     PredictableCodeSizeScope predictable(masm,

src/ppc/interface-descriptors-ppc.cc

@@ -27,6 +27,12 @@ const Register StoreDescriptor::NameRegister() { return r5; }
 const Register StoreDescriptor::ValueRegister() { return r3; }
 
 
+const Register VectorStoreICTrampolineDescriptor::SlotRegister() { return r7; }
+
+
+const Register VectorStoreICDescriptor::VectorRegister() { return r6; }
+
+
 const Register StoreTransitionDescriptor::MapRegister() { return r6; }