MIPS: Refactor BinaryOpIC to be able to use different stubs.

Port r18191 (c20c6dc1)

Original commit message:
Previously BinaryOpIC and BinaryOpStub were pretty much interdependent.
However, in order to use allocation sites for string adds on-demand,
we need to be able to use different stubs (with a different number of
register parameters, via trampolines) depending on the BinaryOpIC state.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/100023002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/code-stubs-mips.cc

@@ -1261,7 +1261,7 @@ void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
 }
 
 
-void BinaryOpStub::InitializeInterfaceDescriptor(
+void BinaryOpICStub::InitializeInterfaceDescriptor(
     Isolate* isolate,
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { a1, a0 };
@@ -1735,7 +1735,7 @@ void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
   ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
   CreateAllocationSiteStub::GenerateAheadOfTime(isolate);
-  BinaryOpStub::GenerateAheadOfTime(isolate);
+  BinaryOpICStub::GenerateAheadOfTime(isolate);
 }
 
 

src/mips/full-codegen-mips.cc

@@ -2319,7 +2319,7 @@ void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
   patch_site.EmitJumpIfSmi(scratch1, &smi_case);
 
   __ bind(&stub_call);
-  BinaryOpStub stub(op, mode);
+  BinaryOpICStub stub(op, mode);
   CallIC(stub.GetCode(isolate()), RelocInfo::CODE_TARGET,
          expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
@@ -2328,7 +2328,6 @@ void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
   __ bind(&smi_case);
   // Smi case. This code works the same way as the smi-smi case in the type
   // recording binary operation stub, see
-  // BinaryOpStub::GenerateSmiSmiOperation for comments.
   switch (op) {
     case Token::SAR:
       __ Branch(&stub_call);
@@ -2402,7 +2401,7 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
                                      OverwriteMode mode) {
   __ mov(a0, result_register());
   __ pop(a1);
-  BinaryOpStub stub(op, mode);
+  BinaryOpICStub stub(op, mode);
   JumpPatchSite patch_site(masm_);    // unbound, signals no inlined smi code.
   CallIC(stub.GetCode(isolate()), RelocInfo::CODE_TARGET,
          expr->BinaryOperationFeedbackId());
@@ -4474,7 +4473,7 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   // Record position before stub call.
   SetSourcePosition(expr->position());
 
-  BinaryOpStub stub(Token::ADD, NO_OVERWRITE);
+  BinaryOpICStub stub(Token::ADD, NO_OVERWRITE);
   CallIC(stub.GetCode(isolate()),
          RelocInfo::CODE_TARGET,
          expr->CountBinOpFeedbackId());

src/mips/lithium-codegen-mips.cc

@@ -2000,7 +2000,7 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   ASSERT(ToRegister(instr->right()).is(a0));
   ASSERT(ToRegister(instr->result()).is(v0));
 
-  BinaryOpStub stub(instr->op(), NO_OVERWRITE);
+  BinaryOpICStub stub(instr->op(), NO_OVERWRITE);
   CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
   // Other arch use a nop here, to signal that there is no inlined
   // patchable code. Mips does not need the nop, since our marker