Add a MathFloor stub generated with TurboFan

src/compiler/ast-graph-builder.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/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 411 matching lines @@
 void AstGraphBuilder::CreateFunctionContext(bool constant_context) {
   function_context_.set(constant_context
                             ? jsgraph()->HeapConstant(info()->context())
                             : NewOuterContextParam());
 }
 
 
 Node* AstGraphBuilder::NewOuterContextParam() {
   // Parameter (arity + 1) is special for the outer context of the function
   const Operator* op =
-      common()->Parameter(info()->num_parameters() + 1, "%context");
+      common()->Parameter(info()->num_parameters_including_this(), "%context");
   return NewNode(op, graph()->start());
 }
 
 
 Node* AstGraphBuilder::NewCurrentContextOsrValue() {
   // TODO(titzer): use a real OSR value here; a parameter works by accident.
   // Parameter (arity + 1) is special for the outer context of the function
-  const Operator* op =
-      common()->Parameter(info()->num_parameters() + 1, "%osr-context");
+  const Operator* op = common()->Parameter(
+      info()->num_parameters_including_this(), "%osr-context");
   return NewNode(op, graph()->start());
 }
 
 
 bool AstGraphBuilder::CreateGraph(bool constant_context, bool stack_check) {
   Scope* scope = info()->scope();
   DCHECK(graph() != NULL);
 
   // Set up the basic structure of the graph.
   int parameter_count = info()->num_parameters();
@@ skipping 156 matching lines @@
       values_(builder_->local_zone()),
       contexts_(builder_->local_zone()),
       control_dependency_(control_dependency),
       effect_dependency_(control_dependency),
       parameters_node_(nullptr),
       locals_node_(nullptr),
       stack_node_(nullptr) {
   DCHECK_EQ(scope->num_parameters() + 1, parameters_count());
 
   // Bind the receiver variable.
-  Node* receiver = builder->graph()->NewNode(common()->Parameter(0, "%this"),
-                                             builder->graph()->start());
-  values()->push_back(receiver);
+  int param_num = 0;
+  if (builder->info()->is_this_defined()) {
+    Node* receiver = builder->graph()->NewNode(
+        common()->Parameter(param_num++, "%this"), builder->graph()->start());
+    values()->push_back(receiver);
+  } else {
+    values()->push_back(builder->jsgraph()->UndefinedConstant());
+  }
 
   // Bind all parameter variables. The parameter indices are shifted by 1
   // (receiver is parameter index -1 but environment index 0).
   for (int i = 0; i < scope->num_parameters(); ++i) {
     const char* debug_name = GetDebugParameterName(graph()->zone(), scope, i);
-    Node* parameter = builder->graph()->NewNode(
-        common()->Parameter(i + 1, debug_name), builder->graph()->start());
+    Node* parameter =
+        builder->graph()->NewNode(common()->Parameter(param_num++, debug_name),
+                                  builder->graph()->start());
     values()->push_back(parameter);
   }
 
   // Bind all local variables to undefined.
   Node* undefined_constant = builder->jsgraph()->UndefinedConstant();
   values()->insert(values()->end(), locals_count(), undefined_constant);
 }
 
 
 AstGraphBuilder::Environment::Environment(AstGraphBuilder::Environment* copy)
@@ skipping 2930 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8