Rollback to Version 3.28.4 (based on bleeding_edge revision r22031)

src/x64/full-codegen-x64.cc

 // Copyright 2012 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/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 1354 matching lines @@
     __ cmpp(ContextOperand(temp, Context::EXTENSION_INDEX), Immediate(0));
     __ j(not_equal, slow);
     // Load next context in chain.
     __ movp(temp, ContextOperand(temp, Context::PREVIOUS_INDEX));
     __ jmp(&next);
     __ bind(&fast);
   }
 
   // All extension objects were empty and it is safe to use a global
   // load IC call.
-  __ movp(LoadIC::ReceiverRegister(), GlobalObjectOperand());
-  __ Move(LoadIC::NameRegister(), var->name());
+  __ movp(rax, GlobalObjectOperand());
+  __ Move(rcx, var->name());
   ContextualMode mode = (typeof_state == INSIDE_TYPEOF)
       ? NOT_CONTEXTUAL
       : CONTEXTUAL;
   CallLoadIC(mode);
 }
 
 
 MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var,
                                                                 Label* slow) {
   ASSERT(var->IsContextSlot());
@@ skipping 58 matching lines @@
 void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy) {
   // Record position before possible IC call.
   SetSourcePosition(proxy->position());
   Variable* var = proxy->var();
 
   // Three cases: global variables, lookup variables, and all other types of
   // variables.
   switch (var->location()) {
     case Variable::UNALLOCATED: {
       Comment cmnt(masm_, "[ Global variable");
-      __ Move(LoadIC::NameRegister(), var->name());
-      __ movp(LoadIC::ReceiverRegister(), GlobalObjectOperand());
+      // Use inline caching. Variable name is passed in rcx and the global
+      // object on the stack.
+      __ Move(rcx, var->name());
+      __ movp(rax, GlobalObjectOperand());
       CallLoadIC(CONTEXTUAL);
       context()->Plug(rax);
       break;
     }
 
     case Variable::PARAMETER:
     case Variable::LOCAL:
     case Variable::CONTEXT: {
       Comment cmnt(masm_, var->IsContextSlot() ? "[ Context slot"
                                                : "[ Stack slot");
@@ skipping 568 matching lines @@
       __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1);
       __ movp(context_register(),
               Operand(rbp, StandardFrameConstants::kContextOffset));
       __ Pop(rax);                                       // result
       EmitReturnSequence();
       __ bind(&l_resume);                                // received in rax
       __ PopTryHandler();
 
       // receiver = iter; f = 'next'; arg = received;
       __ bind(&l_next);
-      Register keyedload_receiver = KeyedLoadIC::ReceiverRegister();
-      Register keyedload_name = KeyedLoadIC::NameRegister();
-      ASSERT(keyedload_receiver.is(rdx));
-      ASSERT(keyedload_name.is(rax));
-
       __ LoadRoot(rcx, Heap::knext_stringRootIndex);     // "next"
       __ Push(rcx);
       __ Push(Operand(rsp, 2 * kPointerSize));           // iter
       __ Push(rax);                                      // received
 
       // result = receiver[f](arg);
       __ bind(&l_call);
-      __ movp(keyedload_receiver, Operand(rsp, kPointerSize));
-      __ movp(keyedload_name, Operand(rsp, 2 * kPointerSize));
+      __ movp(rdx, Operand(rsp, kPointerSize));
+      __ movp(rax, Operand(rsp, 2 * kPointerSize));
       Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
       CallIC(ic, TypeFeedbackId::None());
       __ movp(rdi, rax);
       __ movp(Operand(rsp, 2 * kPointerSize), rdi);
       CallFunctionStub stub(isolate(), 1, CALL_AS_METHOD);
       __ CallStub(&stub);
 
       __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
       __ Drop(1);  // The function is still on the stack; drop it.
 
       // if (!result.done) goto l_try;
       __ bind(&l_loop);
-      Register load_receiver = LoadIC::ReceiverRegister();
-      Register load_name = LoadIC::NameRegister();
-      ASSERT(load_receiver.is(rax));
-      ASSERT(load_name.is(rcx));
-
-      __ Push(load_receiver);                               // save result
-      __ LoadRoot(load_name, Heap::kdone_stringRootIndex);  // "done"
-      CallLoadIC(NOT_CONTEXTUAL);                           // rax=result.done
+      __ Push(rax);                                      // save result
+      __ LoadRoot(rcx, Heap::kdone_stringRootIndex);     // "done"
+      CallLoadIC(NOT_CONTEXTUAL);                        // result.done in rax
       Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate());
       CallIC(bool_ic);
       __ testp(result_register(), result_register());
       __ j(zero, &l_try);
 
       // result.value
-      __ Pop(load_receiver);                             // result
-      __ LoadRoot(load_name, Heap::kvalue_stringRootIndex);  // "value"
+      __ Pop(rax);                                       // result
+      __ LoadRoot(rcx, Heap::kvalue_stringRootIndex);    // "value"
       CallLoadIC(NOT_CONTEXTUAL);                        // result.value in rax
       context()->DropAndPlug(2, rax);                    // drop iter and g
       break;
     }
   }
 }
 
 
 void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
     Expression *value,
@@ skipping 140 matching lines @@
   // Only the value field needs a write barrier, as the other values are in the
   // root set.
   __ RecordWriteField(rax, JSGeneratorObject::kResultValuePropertyOffset,
                       rcx, rdx, kDontSaveFPRegs);
 }
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
-  __ Move(LoadIC::NameRegister(), key->value());
+  __ Move(rcx, key->value());
   CallLoadIC(NOT_CONTEXTUAL, prop->PropertyFeedbackId());
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
   CallIC(ic, prop->PropertyFeedbackId());
 }
 
@@ skipping 238 matching lines @@
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::VisitProperty(Property* expr) {
   Comment cmnt(masm_, "[ Property");
   Expression* key = expr->key();
 
   if (key->IsPropertyName()) {
     VisitForAccumulatorValue(expr->obj());
-    ASSERT(rax.is(LoadIC::ReceiverRegister()));
     EmitNamedPropertyLoad(expr);
     PrepareForBailoutForId(expr->LoadId(), TOS_REG);
     context()->Plug(rax);
   } else {
     VisitForStackValue(expr->obj());
     VisitForAccumulatorValue(expr->key());
-    ASSERT(rax.is(KeyedLoadIC::NameRegister()));
-    __ Pop(KeyedLoadIC::ReceiverRegister());
+    __ Pop(rdx);
     EmitKeyedPropertyLoad(expr);
     context()->Plug(rax);
   }
 }
 
 
 void FullCodeGenerator::CallIC(Handle<Code> code,
                                TypeFeedbackId ast_id) {
   ic_total_count_++;
   __ call(code, RelocInfo::CODE_TARGET, ast_id);
@@ skipping 12 matching lines @@
     { StackValueContext context(this);
       EmitVariableLoad(callee->AsVariableProxy());
       PrepareForBailout(callee, NO_REGISTERS);
     }
     // Push undefined as receiver. This is patched in the method prologue if it
     // is a sloppy mode method.
     __ Push(isolate()->factory()->undefined_value());
   } else {
     // Load the function from the receiver.
     ASSERT(callee->IsProperty());
-    __ movp(LoadIC::ReceiverRegister(), Operand(rsp, 0));
+    __ movp(rax, Operand(rsp, 0));
     EmitNamedPropertyLoad(callee->AsProperty());
     PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
     // Push the target function under the receiver.
     __ Push(Operand(rsp, 0));
     __ movp(Operand(rsp, kPointerSize), rax);
   }
 
   EmitCall(expr, call_type);
 }
 
 
 // Common code for calls using the IC.
 void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr,
                                                 Expression* key) {
   // Load the key.
   VisitForAccumulatorValue(key);
-  ASSERT(rax.is(KeyedLoadIC::NameRegister()));
 
   Expression* callee = expr->expression();
 
   // Load the function from the receiver.
   ASSERT(callee->IsProperty());
-  __ movp(KeyedLoadIC::ReceiverRegister(), Operand(rsp, 0));
+  __ movp(rdx, Operand(rsp, 0));
   EmitKeyedPropertyLoad(callee->AsProperty());
   PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
 
   // Push the target function under the receiver.
   __ Push(Operand(rsp, 0));
   __ movp(Operand(rsp, kPointerSize), rax);
 
   EmitCall(expr, CallIC::METHOD);
 }
 
@@ skipping 1457 matching lines @@
   Comment cmnt(masm_, "[ CallRuntime");
   ZoneList<Expression*>* args = expr->arguments();
   int arg_count = args->length();
 
   if (expr->is_jsruntime()) {
     // Push the builtins object as receiver.
     __ movp(rax, GlobalObjectOperand());
     __ Push(FieldOperand(rax, GlobalObject::kBuiltinsOffset));
 
     // Load the function from the receiver.
-    __ movp(LoadIC::ReceiverRegister(), Operand(rsp, 0));
-    __ Move(LoadIC::NameRegister(), expr->name());
+    __ movp(rax, Operand(rsp, 0));
+    __ Move(rcx, expr->name());
     CallLoadIC(NOT_CONTEXTUAL, expr->CallRuntimeFeedbackId());
 
     // Push the target function under the receiver.
     __ Push(Operand(rsp, 0));
     __ movp(Operand(rsp, kPointerSize), rax);
 
     // Push the arguments ("left-to-right").
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));
     }
@@ skipping 158 matching lines @@
     ASSERT(expr->expression()->AsVariableProxy()->var() != NULL);
     AccumulatorValueContext context(this);
     EmitVariableLoad(expr->expression()->AsVariableProxy());
   } else {
     // Reserve space for result of postfix operation.
     if (expr->is_postfix() && !context()->IsEffect()) {
       __ Push(Smi::FromInt(0));
     }
     if (assign_type == NAMED_PROPERTY) {
       VisitForAccumulatorValue(prop->obj());
-      ASSERT(rax.is(LoadIC::ReceiverRegister()));
       __ Push(rax);  // Copy of receiver, needed for later store.
       EmitNamedPropertyLoad(prop);
     } else {
       VisitForStackValue(prop->obj());
       VisitForAccumulatorValue(prop->key());
-      ASSERT(rax.is(KeyedLoadIC::NameRegister()));
-      // Leave receiver on stack
-      __ movp(KeyedLoadIC::ReceiverRegister(), Operand(rsp, 0));
-      // Copy of key, needed for later store.
-      __ Push(KeyedLoadIC::NameRegister());
+      __ movp(rdx, Operand(rsp, 0));  // Leave receiver on stack
+      __ Push(rax);  // Copy of key, needed for later store.
       EmitKeyedPropertyLoad(prop);
     }
   }
 
   // We need a second deoptimization point after loading the value
   // in case evaluating the property load my have a side effect.
   if (assign_type == VARIABLE) {
     PrepareForBailout(expr->expression(), TOS_REG);
   } else {
     PrepareForBailoutForId(prop->LoadId(), TOS_REG);
@@ skipping 132 matching lines @@
 }
 
 
 void FullCodeGenerator::VisitForTypeofValue(Expression* expr) {
   VariableProxy* proxy = expr->AsVariableProxy();
   ASSERT(!context()->IsEffect());
   ASSERT(!context()->IsTest());
 
   if (proxy != NULL && proxy->var()->IsUnallocated()) {
     Comment cmnt(masm_, "[ Global variable");
-    __ Move(LoadIC::NameRegister(), proxy->name());
-    __ movp(LoadIC::ReceiverRegister(), GlobalObjectOperand());
+    __ Move(rcx, proxy->name());
+    __ movp(rax, GlobalObjectOperand());
     // Use a regular load, not a contextual load, to avoid a reference
     // error.
     CallLoadIC(NOT_CONTEXTUAL);
     PrepareForBailout(expr, TOS_REG);
     context()->Plug(rax);
   } else if (proxy != NULL && proxy->var()->IsLookupSlot()) {
     Comment cmnt(masm_, "[ Lookup slot");
     Label done, slow;
 
     // Generate code for loading from variables potentially shadowed
@@ skipping 416 matching lines @@
   ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64