Convert Linkage to use MachineSignature.

src/compiler/structured-machine-assembler.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/pipeline.h"
 #include "src/compiler/scheduler.h"
 #include "src/compiler/structured-machine-assembler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 Node* Variable::Get() const { return smasm_->GetVariable(offset_); }
 
 
 void Variable::Set(Node* value) const { smasm_->SetVariable(offset_, value); }
 
 
 StructuredMachineAssembler::StructuredMachineAssembler(
-    Graph* graph, MachineCallDescriptorBuilder* call_descriptor_builder,
-    MachineType word)
+    Graph* graph, MachineSignature* machine_sig, MachineType word)
     : GraphBuilder(graph),
       schedule_(new (zone()) Schedule(zone())),
       machine_(zone(), word),
       common_(zone()),
-      call_descriptor_builder_(call_descriptor_builder),
+      machine_sig_(machine_sig),
+      call_descriptor_(
+          Linkage::GetSimplifiedCDescriptor(graph->zone(), machine_sig)),
       parameters_(NULL),
       current_environment_(new (zone())
                            Environment(zone(), schedule()->start(), false)),
       number_of_variables_(0) {
   Node* s = graph->NewNode(common_.Start(parameter_count()));
   graph->SetStart(s);
   if (parameter_count() == 0) return;
   parameters_ = zone()->NewArray<Node*>(parameter_count());
   for (int i = 0; i < parameter_count(); ++i) {
     parameters_[i] = NewNode(common()->Parameter(i), graph->start());
@@ skipping 615 matching lines @@
   }
   pending_header_merges_.clear();
   pending_exit_merges_.clear();
   header_environment_ = NULL;
   DCHECK(IsDone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8