[Interpreter] Add support for JS calls.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index 0efdd065551fefc346ebaf3240852de82fbf97cb..55afeb5c10d63609d84cb812718659a1e515e3d7 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -281,7 +281,8 @@ void InstructionSelector::InitializeCallBuffer(Node* call, CallBuffer* buffer,
             static_cast<int>(buffer->descriptor->ReturnCount()));
   DCHECK_EQ(
       call->op()->ValueInputCount(),
-      static_cast<int>(buffer->input_count() + buffer->frame_state_count()));
+      static_cast<int>(buffer->input_count() + buffer->frame_state_count() +
+                       buffer->non_argument_input_count()));
 
   if (buffer->descriptor->ReturnCount() > 0) {
     // Collect the projections that represent multiple outputs from this call.
@@ -423,7 +424,8 @@ void InstructionSelector::VisitBlock(BasicBlock* block) {
     SourcePosition source_position = source_positions_->GetSourcePosition(node);
     if (source_position.IsKnown() &&
         (source_position_mode_ == kAllSourcePositions ||
-         node->opcode() == IrOpcode::kCall)) {
+         node->opcode() == IrOpcode::kCall ||
+         node->opcode() == IrOpcode::kCallVarArgs)) {
       sequence()->SetSourcePosition(instructions_[current_node_end],
                                     source_position);
     }
@@ -583,6 +585,8 @@ void InstructionSelector::VisitNode(Node* node) {
     }
     case IrOpcode::kCall:
       return VisitCall(node);
+    case IrOpcode::kCallVarArgs:
+      return VisitCallVarArgs(node);
     case IrOpcode::kFrameState:
     case IrOpcode::kStateValues:
       return;