[turbofan] Add MachineType to LinkageLocation

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 899 matching lines @@
     // Convert inputs to the output representation of this phi, pass the
     // truncation truncation along.
     UseInfo input_use(output, truncation);
     for (int i = 0; i < node->InputCount(); i++) {
       ProcessInput(node, i, i < values ? input_use : UseInfo::None());
     }
   }
 
   void VisitCall(Node* node, SimplifiedLowering* lowering) {
     const CallDescriptor* desc = CallDescriptorOf(node->op());
-    const MachineSignature* sig = desc->GetMachineSignature();
-    int params = static_cast<int>(sig->parameter_count());
+    int params = static_cast<int>(desc->ParameterCount());
     // Propagate representation information from call descriptor.
     for (int i = 0; i < node->InputCount(); i++) {
       if (i == 0) {
         // The target of the call.
         ProcessInput(node, i, UseInfo::None());
       } else if ((i - 1) < params) {
         ProcessInput(node, i, TruncatingUseInfoFromRepresentation(
-                                  sig->GetParam(i - 1).representation()));
+                                  desc->GetInputType(i).representation()));
       } else {
         ProcessInput(node, i, UseInfo::None());
       }
     }
 
-    if (sig->return_count() > 0) {
-      SetOutput(node,
-                desc->GetMachineSignature()->GetReturn().representation());
+    if (desc->ReturnCount() > 0) {
+      SetOutput(node, desc->GetReturnType(0).representation());
     } else {
       SetOutput(node, MachineRepresentation::kTagged);
     }
   }
 
   MachineSemantic DeoptValueSemanticOf(Type* type) {
     // We only need signedness to do deopt correctly.
     if (type->Is(Type::Signed32())) {
       return MachineSemantic::kInt32;
     } else if (type->Is(Type::Unsigned32())) {
@@ skipping 2204 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