Revert "Merge old data and pointer space."

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 52ab0bdc687a1f817afe9faac186c459536b195b..5feb681c18f72f61568330050a015324498e6124 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -5387,9 +5387,13 @@ void LCodeGen::DoAllocate(LAllocate* instr) {
   if (instr->hydrogen()->MustAllocateDoubleAligned()) {
     flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT);
   }
-  if (instr->hydrogen()->IsOldSpaceAllocation()) {
+  if (instr->hydrogen()->IsOldPointerSpaceAllocation()) {
+    DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
     DCHECK(!instr->hydrogen()->IsNewSpaceAllocation());
-    flags = static_cast<AllocationFlags>(flags | PRETENURE);
+    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);
   }
   if (instr->size()->IsConstantOperand()) {
     int32_t size = ToInteger32(LConstantOperand::cast(instr->size()));
@@ -5451,9 +5455,13 @@ void LCodeGen::DoDeferredAllocate(LAllocate* instr) {
 
   int flags = AllocateDoubleAlignFlag::encode(
       instr->hydrogen()->MustAllocateDoubleAligned());
-  if (instr->hydrogen()->IsOldSpaceAllocation()) {
+  if (instr->hydrogen()->IsOldPointerSpaceAllocation()) {
+    DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation());
+    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_SPACE);
+    flags = AllocateTargetSpace::update(flags, OLD_DATA_SPACE);
   } else {
     flags = AllocateTargetSpace::update(flags, NEW_SPACE);
   }