MIPS: Remove CallICs

src/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2048 matching lines @@
       Label l_catch, l_try, l_suspend, l_continuation, l_resume;
       Label l_next, l_call, l_loop;
       // Initial send value is undefined.
       __ LoadRoot(a0, Heap::kUndefinedValueRootIndex);
       __ Branch(&l_next);
 
       // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; }
       __ bind(&l_catch);
       __ mov(a0, v0);
       handler_table()->set(expr->index(), Smi::FromInt(l_catch.pos()));
-      __ LoadRoot(a2, Heap::kthrow_stringRootIndex);     // "throw"
-      __ lw(a3, MemOperand(sp, 1 * kPointerSize));       // iter
-      __ Push(a3, a0);                                   // iter, exception
+      __ LoadRoot(a2, Heap::kthrow_stringRootIndex);  // "throw"
+      __ lw(a3, MemOperand(sp, 1 * kPointerSize));    // iter
+      __ Push(a2, a3, a0);                            // "throw", iter, except
       __ jmp(&l_call);
 
       // try { received = %yield result }
       // Shuffle the received result above a try handler and yield it without
       // re-boxing.
       __ bind(&l_try);
       __ pop(a0);                                        // result
       __ PushTryHandler(StackHandler::CATCH, expr->index());
       const int handler_size = StackHandlerConstants::kSize;
       __ push(a0);                                       // result
       __ jmp(&l_suspend);
       __ bind(&l_continuation);
       __ mov(a0, v0);
       __ jmp(&l_resume);
       __ bind(&l_suspend);
       const int generator_object_depth = kPointerSize + handler_size;
       __ lw(a0, MemOperand(sp, generator_object_depth));
       __ push(a0);                                       // g
       ASSERT(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos()));
       __ li(a1, Operand(Smi::FromInt(l_continuation.pos())));
       __ sw(a1, FieldMemOperand(a0, JSGeneratorObject::kContinuationOffset));
       __ sw(cp, FieldMemOperand(a0, JSGeneratorObject::kContextOffset));
       __ mov(a1, cp);
       __ RecordWriteField(a0, JSGeneratorObject::kContextOffset, a1, a2,
                           kRAHasBeenSaved, kDontSaveFPRegs);
       __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1);
       __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-      __ pop(v0);                                        // result
+      __ pop(v0);                                      // result
       EmitReturnSequence();
       __ mov(a0, v0);
-      __ bind(&l_resume);                                // received in a0
+      __ bind(&l_resume);                              // received in a0
       __ PopTryHandler();
 
       // receiver = iter; f = 'next'; arg = received;
       __ bind(&l_next);
-      __ LoadRoot(a2, Heap::knext_stringRootIndex);      // "next"
-      __ lw(a3, MemOperand(sp, 1 * kPointerSize));       // iter
-      __ Push(a3, a0);                                   // iter, received
+      __ LoadRoot(a2, Heap::knext_stringRootIndex);    // "next"
+      __ lw(a3, MemOperand(sp, 1 * kPointerSize));     // iter
+      __ Push(a2, a3, a0);                             // "next", iter, received
 
       // result = receiver[f](arg);
       __ bind(&l_call);
-      Handle<Code> ic = isolate()->stub_cache()->ComputeKeyedCallInitialize(1);
-      CallIC(ic);
+      __ lw(a1, MemOperand(sp, kPointerSize));
+      __ lw(a0, MemOperand(sp, 2 * kPointerSize));
+      Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
+      CallIC(ic, NOT_CONTEXTUAL, TypeFeedbackId::None());
+      __ mov(a0, v0);
+      __ mov(a1, a0);
+      __ sw(a1, MemOperand(sp, 2 * kPointerSize));
+      CallFunctionStub stub(1, CALL_AS_METHOD);
+      __ CallStub(&stub);
+
       __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+      __ Drop(1);  // The function is still on the stack; drop it.
 
       // if (!result.done) goto l_try;
       __ bind(&l_loop);
       __ mov(a0, v0);
       __ push(a0);                                       // save result
       __ LoadRoot(a2, Heap::kdone_stringRootIndex);      // "done"
       CallLoadIC(NOT_CONTEXTUAL);                        // result.done in v0
       __ mov(a0, v0);
       Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate());
       CallIC(bool_ic);
@@ skipping 502 matching lines @@
 
 void FullCodeGenerator::CallIC(Handle<Code> code,
                                ContextualMode mode,
                                TypeFeedbackId id) {
   ic_total_count_++;
   ASSERT(mode != CONTEXTUAL || id.IsNone());
   __ Call(code, RelocInfo::CODE_TARGET, id);
 }
 
 
-void FullCodeGenerator::EmitCallWithIC(Call* expr,
-                                       Handle<Object> name,
-                                       ContextualMode mode) {
-  // Code common for calls using the IC.
+// Code common for calls using the IC.
+void FullCodeGenerator::EmitCallWithIC(Call* expr) {
+  Expression* callee = expr->expression();
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
-  { PreservePositionScope scope(masm()->positions_recorder());
-    for (int i = 0; i < arg_count; i++) {
-      VisitForStackValue(args->at(i));
+
+  CallFunctionFlags flags;
+  // Get the target function.
+  if (callee->IsVariableProxy()) {
+    { StackValueContext context(this);
+      EmitVariableLoad(callee->AsVariableProxy());
+      PrepareForBailout(callee, NO_REGISTERS);
     }
-    __ li(a2, Operand(name));
+    // Push undefined as receiver. This is patched in the method prologue if it
+    // is a classic mode method.
+    __ Push(isolate()->factory()->undefined_value());
+    flags = NO_CALL_FUNCTION_FLAGS;
+  } else {
+    // Load the function from the receiver.
+    ASSERT(callee->IsProperty());
+    __ lw(v0, MemOperand(sp, 0));
+    EmitNamedPropertyLoad(callee->AsProperty());
+    PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
+    // Push the target function under the receiver.
+    __ lw(at, MemOperand(sp, 0));
+    __ push(at);
+    __ sw(v0, MemOperand(sp, kPointerSize));
+    flags = CALL_AS_METHOD;
   }
-  // Record source position for debugger.
-  SetSourcePosition(expr->position());
-  // Call the IC initialization code.
-  Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(arg_count);
-  TypeFeedbackId ast_id = mode == CONTEXTUAL
-      ? TypeFeedbackId::None()
-      : expr->CallFeedbackId();
-  CallIC(ic, mode, ast_id);
-  RecordJSReturnSite(expr);
-  // Restore context register.
-  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-  context()->Plug(v0);
-}
 
-
-void FullCodeGenerator::EmitKeyedCallWithIC(Call* expr,
-                                            Expression* key) {
-  // Load the key.
-  VisitForAccumulatorValue(key);
-
-  // Swap the name of the function and the receiver on the stack to follow
-  // the calling convention for call ICs.
-  __ pop(a1);
-  __ push(v0);
-  __ push(a1);
-
-  // Code common for calls using the IC.
-  ZoneList<Expression*>* args = expr->arguments();
-  int arg_count = args->length();
+  // Load the arguments.
   { PreservePositionScope scope(masm()->positions_recorder());
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));
     }
   }
   // Record source position for debugger.
   SetSourcePosition(expr->position());
-  // Call the IC initialization code.
-  Handle<Code> ic =
-      isolate()->stub_cache()->ComputeKeyedCallInitialize(arg_count);
-  __ lw(a2, MemOperand(sp, (arg_count + 1) * kPointerSize));  // Key.
-  CallIC(ic, NOT_CONTEXTUAL, expr->CallFeedbackId());
+  CallFunctionStub stub(arg_count, flags);
+  __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
+  __ CallStub(&stub);
+
+  RecordJSReturnSite(expr);
+
+  // Restore context register.
+  __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+
+  context()->DropAndPlug(1, v0);
+}
+
+
+// Code common for calls using the IC.
+void FullCodeGenerator::EmitKeyedCallWithIC(Call* expr,
+                                            Expression* key) {
+  // Load the key.
+  VisitForAccumulatorValue(key);
+
+  Expression* callee = expr->expression();
+  ZoneList<Expression*>* args = expr->arguments();
+  int arg_count = args->length();
+
+  // Load the function from the receiver.
+  ASSERT(callee->IsProperty());
+  __ lw(a1, MemOperand(sp, 0));
+  EmitKeyedPropertyLoad(callee->AsProperty());
+  PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
+
+  // Push the target function under the receiver.
+  __ lw(at, MemOperand(sp, 0));
+  __ push(at);
+  __ sw(v0, MemOperand(sp, kPointerSize));
+
+  { PreservePositionScope scope(masm()->positions_recorder());
+    for (int i = 0; i < arg_count; i++) {
+      VisitForStackValue(args->at(i));
+    }
+  }
+
+  // Record source position for debugger.
+  SetSourcePosition(expr->position());
+  CallFunctionStub stub(arg_count, CALL_AS_METHOD);
+  __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
+  __ CallStub(&stub);
+
   RecordJSReturnSite(expr);
   // Restore context register.
   __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-  context()->DropAndPlug(1, v0);  // Drop the key still on the stack.
+
+  context()->DropAndPlug(1, v0);
 }
 
 
 void FullCodeGenerator::EmitCallWithStub(Call* expr) {
   // Code common for calls using the call stub.
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
   { PreservePositionScope scope(masm()->positions_recorder());
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));
@@ skipping 86 matching lines @@
     // Record source position for debugger.
     SetSourcePosition(expr->position());
     CallFunctionStub stub(arg_count, NO_CALL_FUNCTION_FLAGS);
     __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
     __ CallStub(&stub);
     RecordJSReturnSite(expr);
     // Restore context register.
     __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
     context()->DropAndPlug(1, v0);
   } else if (call_type == Call::GLOBAL_CALL) {
-    // Push global object as receiver for the call IC.
-    __ lw(a0, GlobalObjectOperand());
-    __ push(a0);
-    VariableProxy* proxy = callee->AsVariableProxy();
-    EmitCallWithIC(expr, proxy->name(), CONTEXTUAL);
+    EmitCallWithIC(expr);
   } else if (call_type == Call::LOOKUP_SLOT_CALL) {
     // Call to a lookup slot (dynamically introduced variable).
     VariableProxy* proxy = callee->AsVariableProxy();
     Label slow, done;
 
     { PreservePositionScope scope(masm()->positions_recorder());
       // Generate code for loading from variables potentially shadowed
       // by eval-introduced variables.
       EmitDynamicLookupFastCase(proxy->var(), NOT_INSIDE_TYPEOF, &slow, &done);
     }
@@ skipping 25 matching lines @@
 
     // The receiver is either the global receiver or an object found
     // by LoadContextSlot.
     EmitCallWithStub(expr);
   } else if (call_type == Call::PROPERTY_CALL) {
     Property* property = callee->AsProperty();
     { PreservePositionScope scope(masm()->positions_recorder());
       VisitForStackValue(property->obj());
     }
     if (property->key()->IsPropertyName()) {
-      EmitCallWithIC(expr,
-                     property->key()->AsLiteral()->value(),
-                     NOT_CONTEXTUAL);
+      EmitCallWithIC(expr);
     } else {
       EmitKeyedCallWithIC(expr, property->key());
     }
   } else {
     ASSERT(call_type == Call::OTHER_CALL);
     // Call to an arbitrary expression not handled specially above.
     { PreservePositionScope scope(masm()->positions_recorder());
       VisitForStackValue(callee);
     }
     __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
@@ skipping 1289 matching lines @@
 void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
   Handle<String> name = expr->name();
   if (name->length() > 0 && name->Get(0) == '_') {
     Comment cmnt(masm_, "[ InlineRuntimeCall");
     EmitInlineRuntimeCall(expr);
     return;
   }
 
   Comment cmnt(masm_, "[ CallRuntime");
   ZoneList<Expression*>* args = expr->arguments();
+  int arg_count = args->length();
 
   if (expr->is_jsruntime()) {
-    // Prepare for calling JS runtime function.
+    // Push the builtins object as the receiver.
     __ lw(a0, GlobalObjectOperand());
     __ lw(a0, FieldMemOperand(a0, GlobalObject::kBuiltinsOffset));
     __ push(a0);
-  }
+    // Load the function from the receiver.
+    __ li(a2, Operand(expr->name()));
+    CallLoadIC(NOT_CONTEXTUAL, expr->CallRuntimeFeedbackId());
 
-  // Push the arguments ("left-to-right").
-  int arg_count = args->length();
-  for (int i = 0; i < arg_count; i++) {
-    VisitForStackValue(args->at(i));
-  }
+    // Push the target function under the receiver.
+    __ lw(at, MemOperand(sp, 0));
+    __ push(at);
+    __ sw(v0, MemOperand(sp, kPointerSize));
 
-  if (expr->is_jsruntime()) {
-    // Call the JS runtime function.
-    __ li(a2, Operand(expr->name()));
-    Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(arg_count);
-    CallIC(ic, NOT_CONTEXTUAL, expr->CallRuntimeFeedbackId());
+    // Push the arguments ("left-to-right").
+    int arg_count = args->length();
+    for (int i = 0; i < arg_count; i++) {
+      VisitForStackValue(args->at(i));
+    }
+
+    // Record source position of the IC call.
+    SetSourcePosition(expr->position());
+    CallFunctionStub stub(arg_count, NO_CALL_FUNCTION_FLAGS);
+    __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
+    __ CallStub(&stub);
+
     // Restore context register.
     __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+
+    context()->DropAndPlug(1, v0);
   } else {
+    // Push the arguments ("left-to-right").
+    for (int i = 0; i < arg_count; i++) {
+      VisitForStackValue(args->at(i));
+    }
+
     // Call the C runtime function.
     __ CallRuntime(expr->function(), arg_count);
+    context()->Plug(v0);
   }
-  context()->Plug(v0);
 }
 
 
 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 728 matching lines @@
       Assembler::target_address_at(pc_immediate_load_address)) ==
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS