Use a register spec for StoreIC and KeyedStoreIC.

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index e0fe8356367157c5cddd3f892450ddbd1f524efc..7fc7c767211ee0fd88d37310a7e8064c40fceda6 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -1666,8 +1666,9 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
         if (key->value()->IsInternalizedString()) {
           if (property->emit_store()) {
             VisitForAccumulatorValue(value);
-            __ Move(rcx, key->value());
-            __ movp(rdx, Operand(rsp, 0));
+            ASSERT(StoreIC::ValueRegister().is(rax));
+            __ Move(StoreIC::NameRegister(), key->value());
+            __ movp(StoreIC::ReceiverRegister(), Operand(rsp, 0));
             CallStoreIC(key->LiteralFeedbackId());
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
           } else {
@@ -2347,9 +2348,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
     case NAMED_PROPERTY: {
       __ Push(rax);  // Preserve value.
       VisitForAccumulatorValue(prop->obj());
-      __ movp(rdx, rax);
-      __ Pop(rax);  // Restore value.
-      __ Move(rcx, prop->key()->AsLiteral()->value());
+      __ Move(StoreIC::ReceiverRegister(), rax);
+      __ Pop(StoreIC::ValueRegister());  // Restore value.
+      __ Move(StoreIC::NameRegister(), prop->key()->AsLiteral()->value());
       CallStoreIC();
       break;
     }
@@ -2357,9 +2358,9 @@ void FullCodeGenerator::EmitAssignment(Expression* expr) {
       __ Push(rax);  // Preserve value.
       VisitForStackValue(prop->obj());
       VisitForAccumulatorValue(prop->key());
-      __ movp(rcx, rax);
-      __ Pop(rdx);
-      __ Pop(rax);  // Restore value.
+      __ Move(KeyedStoreIC::NameRegister(), rax);
+      __ Pop(KeyedStoreIC::ReceiverRegister());
+      __ Pop(KeyedStoreIC::ValueRegister());  // Restore value.
       Handle<Code> ic = strict_mode() == SLOPPY
           ? isolate()->builtins()->KeyedStoreIC_Initialize()
           : isolate()->builtins()->KeyedStoreIC_Initialize_Strict();
@@ -2396,8 +2397,8 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var,
                                                Token::Value op) {
   if (var->IsUnallocated()) {
     // Global var, const, or let.
-    __ Move(rcx, var->name());
-    __ movp(rdx, GlobalObjectOperand());
+    __ Move(StoreIC::NameRegister(), var->name());
+    __ movp(StoreIC::ReceiverRegister(), GlobalObjectOperand());
     CallStoreIC();
 
   } else if (op == Token::INIT_CONST_LEGACY) {
@@ -2465,8 +2466,8 @@ void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
 
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
-  __ Move(rcx, prop->key()->AsLiteral()->value());
-  __ Pop(rdx);
+  __ Move(StoreIC::NameRegister(), prop->key()->AsLiteral()->value());
+  __ Pop(StoreIC::ReceiverRegister());
   CallStoreIC(expr->AssignmentFeedbackId());
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
@@ -2477,8 +2478,9 @@ void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
   // Assignment to a property, using a keyed store IC.
 
-  __ Pop(rcx);
-  __ Pop(rdx);
+  __ Pop(KeyedStoreIC::NameRegister());  // Key.
+  __ Pop(KeyedStoreIC::ReceiverRegister());
+  ASSERT(KeyedStoreIC::ValueRegister().is(rax));
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
   Handle<Code> ic = strict_mode() == SLOPPY
@@ -4340,8 +4342,8 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
       }
       break;
     case NAMED_PROPERTY: {
-      __ Move(rcx, prop->key()->AsLiteral()->value());
-      __ Pop(rdx);
+      __ Move(StoreIC::NameRegister(), prop->key()->AsLiteral()->value());
+      __ Pop(StoreIC::ReceiverRegister());
       CallStoreIC(expr->CountStoreFeedbackId());
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
@@ -4354,8 +4356,8 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
       break;
     }
     case KEYED_PROPERTY: {
-      __ Pop(rcx);
-      __ Pop(rdx);
+      __ Pop(KeyedStoreIC::NameRegister());
+      __ Pop(KeyedStoreIC::ReceiverRegister());
       Handle<Code> ic = strict_mode() == SLOPPY
           ? isolate()->builtins()->KeyedStoreIC_Initialize()
           : isolate()->builtins()->KeyedStoreIC_Initialize_Strict();