Convert Linkage to use MachineSignature.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 208 matching lines @@
     case kArchCallAddress:
       if (HasImmediateInput(instr, 0)) {
         Immediate64 imm = i.InputImmediate64(0);
         DCHECK_EQ(kImm64Value, imm.type);
         __ Call(reinterpret_cast<byte*>(imm.value), RelocInfo::NONE64);
       } else {
         __ call(i.InputRegister(0));
       }
       break;
     case kArchCallJSFunction: {
-      // TODO(jarin) The load of the context should be separated from the call.
       Register func = i.InputRegister(0);
-      __ movp(rsi, FieldOperand(func, JSFunction::kContextOffset));
+      if (FLAG_debug_code) {
+        // Check the function's context matches the context argument.
+        __ cmpp(rsi, FieldOperand(func, JSFunction::kContextOffset));
+        __ Assert(equal, kWrongFunctionContext);
+      }
       __ Call(FieldOperand(func, JSFunction::kCodeEntryOffset));
       AddSafepointAndDeopt(instr);
       break;
     }
     case kArchDrop: {
       int words = MiscField::decode(instr->opcode());
       __ addq(rsp, Immediate(kPointerSize * words));
       break;
     }
     case kArchJmp:
@@ skipping 609 matching lines @@
       __ ret(0);
     } else {
       // No saved registers.
       __ movq(rsp, rbp);  // Move stack pointer back to frame pointer.
       __ popq(rbp);       // Pop caller's frame pointer.
       __ ret(0);
     }
   } else {
     __ movq(rsp, rbp);  // Move stack pointer back to frame pointer.
     __ popq(rbp);       // Pop caller's frame pointer.
-    int pop_count =
-        descriptor->IsJSFunctionCall() ? descriptor->ParameterCount() : 0;
+    int pop_count = descriptor->IsJSFunctionCall()
+                        ? static_cast<int>(descriptor->JSParameterCount())
+                        : 0;
     __ ret(pop_count * kPointerSize);
   }
 }
 
 
 void CodeGenerator::AssembleMove(InstructionOperand* source,
                                  InstructionOperand* destination) {
   X64OperandConverter g(this, NULL);
   // Dispatch on the source and destination operand kinds.  Not all
   // combinations are possible.
@@ skipping 122 matching lines @@
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { __ nop(); }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8