[WIP] Start adding JSCallWithVarargs

src/compiler/simplified-lowering.cc

 // Copyright 2014 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.
 
 #include "src/compiler/simplified-lowering.h"
 
 #include <limits>
 
 #include "src/address-map.h"
 #include "src/base/bits.h"
@@ skipping 1535 matching lines @@
           SetOutput(node, MachineRepresentation::kWord32);
           if (lower()) lowering->DoJSToNumberTruncatesToWord32(node, this);
         } else if (truncation.IsUsedAsFloat64()) {
           SetOutput(node, MachineRepresentation::kFloat64);
           if (lower()) lowering->DoJSToNumberTruncatesToFloat64(node, this);
         } else {
           SetOutput(node, MachineRepresentation::kTagged);
         }
         return;
       }
+      case IrOpcode::kJSCallVarargs: {
+        CallVarargsParameters p = CallVarargsParametersOf(node->op());
+        int arity = static_cast<int>(p.arity());
+        for (int i = 0; i < arity; ++i) {
+          ProcessInput(node, i, UseInfo::AnyTagged());
+        }
+        // argumentsList and argumentsLength
+        ProcessInput(node, arity + 0, UseInfo::TaggedPointer());
+        ProcessInput(node, arity + 1, UseInfo::TruncatingWord32());
+        ProcessRemainingInputs(node, arity + 2);
+        SetOutput(node, MachineRepresentation::kTagged);
+        return;
+      }
 
       //------------------------------------------------------------------
       // Simplified operators.
       //------------------------------------------------------------------
       case IrOpcode::kBooleanNot: {
         if (lower()) {
           NodeInfo* input_info = GetInfo(node->InputAt(0));
           if (input_info->representation() == MachineRepresentation::kBit) {
             // BooleanNot(x: kRepBit) => Word32Equal(x, #0)
             node->AppendInput(jsgraph_->zone(), jsgraph_->Int32Constant(0));
@@ skipping 1325 matching lines @@
         JS_OBJECT_OP_LIST(OPCODE_CASE)
         JS_CONTEXT_OP_LIST(OPCODE_CASE)
         JS_OTHER_OP_LIST(OPCODE_CASE)
 #undef OPCODE_CASE
       case IrOpcode::kJSToInteger:
       case IrOpcode::kJSToLength:
       case IrOpcode::kJSToName:
       case IrOpcode::kJSToObject:
       case IrOpcode::kJSToString:
       case IrOpcode::kJSToPrimitiveToString:
+      case IrOpcode::kJSConstruct:
+      case IrOpcode::kJSConstructForwardVarargs:
+      case IrOpcode::kJSConstructWithSpread:
+      case IrOpcode::kJSCall:
+      case IrOpcode::kJSCallForwardVarargs:
+      case IrOpcode::kJSCallWithArrayLike:
+      case IrOpcode::kJSCallWithSpread:
+      case IrOpcode::kJSCallRuntime:
         VisitInputs(node);
         // Assume the output is tagged.
         return SetOutput(node, MachineRepresentation::kTagged);
 
       default:
         V8_Fatal(
             __FILE__, __LINE__,
             "Representation inference: unsupported opcode %i (%s), node #%i\n.",
             node->opcode(), node->op()->mnemonic(), node->id());
         break;
@@ skipping 831 matching lines @@
         isolate(), graph()->zone(), callable.descriptor(), 0, flags,
         Operator::kNoProperties);
     to_number_operator_.set(common()->Call(desc));
   }
   return to_number_operator_.get();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8