Add HasProperty code stub that tries simple lookups or jumps to runtime otherwise.

src/full-codegen/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 441 matching lines @@
       int32_t sp_delta = arg_count * kPointerSize;
       SetReturnPosition(literal());
       masm_->mov(sp, fp);
       masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit()));
       masm_->Addu(sp, sp, Operand(sp_delta));
       masm_->Jump(ra);
     }
   }
 }
 
+void FullCodeGenerator::RestoreContext() {
+  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+}
 
 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const {
   DCHECK(var->IsStackAllocated() || var->IsContextSlot());
   codegen()->GetVar(result_register(), var);
   codegen()->PushOperand(result_register());
 }
 
 
 void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const {
 }
@@ skipping 934 matching lines @@
   __ lw(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   __ li(a2, Operand(Smi::FromInt(expr->literal_index())));
   __ li(a1, Operand(constant_properties));
   __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags())));
   if (MustCreateObjectLiteralWithRuntime(expr)) {
     __ Push(a3, a2, a1, a0);
     __ CallRuntime(Runtime::kCreateObjectLiteral);
   } else {
     FastCloneShallowObjectStub stub(isolate(), expr->properties_count());
     __ CallStub(&stub);
-    __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+    RestoreContext();
   }
   PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG);
 
   // If result_saved is true the result is on top of the stack.  If
   // result_saved is false the result is in v0.
   bool result_saved = false;
 
   AccessorTable accessor_table(zone());
   int property_index = 0;
   for (; property_index < expr->properties()->length(); property_index++) {
@@ skipping 425 matching lines @@
   __ li(a1, Operand(Smi::FromInt(continuation.pos())));
   __ sw(a1, FieldMemOperand(v0, JSGeneratorObject::kContinuationOffset));
   __ sw(cp, FieldMemOperand(v0, JSGeneratorObject::kContextOffset));
   __ mov(a1, cp);
   __ RecordWriteField(v0, JSGeneratorObject::kContextOffset, a1, a2,
                       kRAHasBeenSaved, kDontSaveFPRegs);
   __ Addu(a1, fp, Operand(StandardFrameConstants::kExpressionsOffset));
   __ Branch(&post_runtime, eq, sp, Operand(a1));
   __ push(v0);  // generator object
   __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1);
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   __ bind(&post_runtime);
   PopOperand(result_register());
   EmitReturnSequence();
 
   __ bind(&resume);
   context()->Plug(result_register());
 }
 
 void FullCodeGenerator::PushOperands(Register reg1, Register reg2) {
   OperandStackDepthIncrement(2);
@@ skipping 652 matching lines @@
       CodeFactory::CallIC(isolate(), arg_count, mode, expr->tail_call_mode())
           .code();
   __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackICSlot())));
   __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
   // Don't assign a type feedback id to the IC, since type feedback is provided
   // by the vector above.
   CallIC(ic);
   OperandStackDepthDecrement(arg_count + 1);
 
   RecordJSReturnSite(expr);
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   context()->DropAndPlug(1, v0);
 }
 
 void FullCodeGenerator::EmitResolvePossiblyDirectEval(Call* expr) {
   int arg_count = expr->arguments()->length();
   // t4: copy of the first argument or undefined if it doesn't exist.
   if (arg_count > 0) {
     __ lw(t4, MemOperand(sp, arg_count * kPointerSize));
   } else {
     __ LoadRoot(t4, Heap::kUndefinedValueRootIndex);
@@ skipping 85 matching lines @@
   PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS);
   // Record source position for debugger.
   SetCallPosition(expr);
   __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
   __ li(a0, Operand(arg_count));
   __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny,
                                       expr->tail_call_mode()),
           RelocInfo::CODE_TARGET);
   OperandStackDepthDecrement(arg_count + 1);
   RecordJSReturnSite(expr);
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   context()->DropAndPlug(1, v0);
 }
 
 
 void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   Comment cmnt(masm_, "[ CallNew");
   // According to ECMA-262, section 11.2.2, page 44, the function
   // expression in new calls must be evaluated before the
   // arguments.
 
@@ skipping 19 matching lines @@
   __ lw(a1, MemOperand(sp, arg_count * kPointerSize));
 
   // Record call targets in unoptimized code.
   __ EmitLoadTypeFeedbackVector(a2);
   __ li(a3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot())));
 
   CallConstructStub stub(isolate());
   __ Call(stub.GetCode(), RelocInfo::CODE_TARGET);
   OperandStackDepthDecrement(arg_count + 1);
   PrepareForBailoutForId(expr->ReturnId(), TOS_REG);
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   context()->Plug(v0);
 }
 
 
 void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
   SuperCallReference* super_call_ref =
       expr->expression()->AsSuperCallReference();
   DCHECK_NOT_NULL(super_call_ref);
 
   // Push the super constructor target on the stack (may be null,
@@ skipping 22 matching lines @@
   __ mov(a3, result_register());
 
   // Load function and argument count into a1 and a0.
   __ li(a0, Operand(arg_count));
   __ lw(a1, MemOperand(sp, arg_count * kPointerSize));
 
   __ Call(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
   OperandStackDepthDecrement(arg_count + 1);
 
   RecordJSReturnSite(expr);
-
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   context()->Plug(v0);
 }
 
 
 void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
 
@@ skipping 390 matching lines @@
     VisitForStackValue(arg);
   }
   PrepareForBailoutForId(expr->CallId(), NO_REGISTERS);
   // Move target to a1.
   int const argc = args->length() - 2;
   __ lw(a1, MemOperand(sp, (argc + 1) * kPointerSize));
   // Call the target.
   __ li(a0, Operand(argc));
   __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
   OperandStackDepthDecrement(argc + 1);
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
   // Discard the function left on TOS.
   context()->DropAndPlug(1, v0);
 }
 
 
 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   VisitForAccumulatorValue(args->at(0));
 
   Label materialize_true, materialize_false;
@@ skipping 96 matching lines @@
 void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
 
   SetCallPosition(expr);
   __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
   __ li(a0, Operand(arg_count));
   __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kNullOrUndefined),
           RelocInfo::CODE_TARGET);
   OperandStackDepthDecrement(arg_count + 1);
-
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  RestoreContext();
 }
 
 
 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
   switch (expr->op()) {
     case Token::DELETE: {
       Comment cmnt(masm_, "[ UnaryOperation (DELETE)");
       Property* property = expr->expression()->AsProperty();
       VariableProxy* proxy = expr->expression()->AsVariableProxy();
 
@@ skipping 446 matching lines @@
   Label* fall_through = NULL;
   context()->PrepareTest(&materialize_true, &materialize_false,
                          &if_true, &if_false, &fall_through);
 
   Token::Value op = expr->op();
   VisitForStackValue(expr->left());
   switch (op) {
     case Token::IN:
       VisitForStackValue(expr->right());
       SetExpressionPosition(expr);
-      CallRuntimeWithOperands(Runtime::kHasProperty);
+      EmitHasProperty();
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ LoadRoot(t0, Heap::kTrueValueRootIndex);
       Split(eq, v0, Operand(t0), if_true, if_false, fall_through);
       break;
 
     case Token::INSTANCEOF: {
       VisitForAccumulatorValue(expr->right());
       SetExpressionPosition(expr);
       __ mov(a0, result_register());
       PopOperand(a1);
@@ skipping 246 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OnStackReplacement()->entry()));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS