Reland "Merge old data and pointer space."

src/arm64/lithium-codegen-arm64.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"
 
 #include "src/arm64/lithium-codegen-arm64.h"
 #include "src/arm64/lithium-gap-resolver-arm64.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 1534 matching lines @@
   Register result = ToRegister(instr->result());
   Register temp1 = ToRegister(instr->temp1());
   Register temp2 = ToRegister(instr->temp2());
 
   // Allocate memory for the object.
   AllocationFlags flags = TAG_OBJECT;
   if (instr->hydrogen()->MustAllocateDoubleAligned()) {
     flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT);
   }
 
-  if (instr->hydrogen()->IsOldPointerSpaceAllocation()) {
-    DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
+  if (instr->hydrogen()->IsOldSpaceAllocation()) {
     DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
-    flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE);
-  } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) {
-    DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
-    flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_DATA_SPACE);
+    flags = static_cast<AllocationFlags>(flags | PRETENURE);
   }
 
   if (instr->size()->IsConstantOperand()) {
     int32_t size = ToInteger32(LConstantOperand::cast(instr->size()));
     if (size <= Page::kMaxRegularHeapObjectSize) {
       __ Allocate(size, result, temp1, temp2, deferred->entry(), flags);
     } else {
       __ B(deferred->entry());
     }
   } else {
@@ skipping 34 matching lines @@
   PushSafepointRegistersScope scope(this);
   // We're in a SafepointRegistersScope so we can use any scratch registers.
   Register size = x0;
   if (instr->size()->IsConstantOperand()) {
     __ Mov(size, ToSmi(LConstantOperand::cast(instr->size())));
   } else {
     __ SmiTag(size, ToRegister32(instr->size()).X());
   }
   int flags = AllocateDoubleAlignFlag::encode(
       instr->hydrogen()->MustAllocateDoubleAligned());
-  if (instr->hydrogen()->IsOldPointerSpaceAllocation()) {
-    DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
+  if (instr->hydrogen()->IsOldSpaceAllocation()) {
     DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
-    flags = AllocateTargetSpace::update(flags, OLD_POINTER_SPACE);
-  } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) {
-    DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
-    flags = AllocateTargetSpace::update(flags, OLD_DATA_SPACE);
+    flags = AllocateTargetSpace::update(flags, OLD_SPACE);
   } else {
     flags = AllocateTargetSpace::update(flags, NEW_SPACE);
   }
   __ Mov(x10, Smi::FromInt(flags));
   __ Push(size, x10);
 
   CallRuntimeFromDeferred(
       Runtime::kAllocateInTargetSpace, 2, instr, instr->context());
   __ StoreToSafepointRegisterSlot(x0, ToRegister(instr->result()));
 }
@@ skipping 4397 matching lines @@
   Handle<ScopeInfo> scope_info = instr->scope_info();
   __ Push(scope_info);
   __ Push(ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 
 } }  // namespace v8::internal