Make context register implicit for CallInterfaceDescriptors

src/x64/code-stubs-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/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 80 matching lines @@
 
 #define __ ACCESS_MASM(masm)
 
 
 void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm,
                                                ExternalReference miss) {
   // Update the static counter each time a new code stub is generated.
   isolate()->counters()->code_stubs()->Increment();
 
   CallInterfaceDescriptor descriptor = GetCallInterfaceDescriptor();
-  int param_count = descriptor.GetEnvironmentParameterCount();
+  int param_count = descriptor.GetRegisterParameterCount();
   {
     // Call the runtime system in a fresh internal frame.
     FrameScope scope(masm, StackFrame::INTERNAL);
     DCHECK(param_count == 0 ||
-           rax.is(descriptor.GetEnvironmentParameterRegister(param_count - 1)));
+           rax.is(descriptor.GetRegisterParameter(param_count - 1)));
     // Push arguments
     for (int i = 0; i < param_count; ++i) {
-      __ Push(descriptor.GetEnvironmentParameterRegister(i));
+      __ Push(descriptor.GetRegisterParameter(i));
     }
     __ CallExternalReference(miss, param_count);
   }
 
   __ Ret();
 }
 
 
 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
   __ PushCallerSaved(save_doubles() ? kSaveFPRegs : kDontSaveFPRegs);
@@ skipping 5303 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64