Reland "Merge old data and pointer space."

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index f6541b89e5e511ebada868b79bb6781b1a1703d1..d5d2064b9609f62e8ecd8753cff2d80b1119dfd4 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -1274,12 +1274,11 @@ void MacroAssembler::Allocate(int object_size,
   // Align the next allocation. Storing the filler map without checking top is
   // safe in new-space because the limit of the heap is aligned there.
   if ((flags & DOUBLE_ALIGNMENT) != 0) {
-    DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
     DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
     Label aligned;
     test(result, Immediate(kDoubleAlignmentMask));
     j(zero, &aligned, Label::kNear);
-    if ((flags & PRETENURE_OLD_DATA_SPACE) != 0) {
+    if ((flags & PRETENURE) != 0) {
       cmp(result, Operand::StaticVariable(allocation_limit));
       j(above_equal, gc_required);
     }
@@ -1351,12 +1350,11 @@ void MacroAssembler::Allocate(int header_size,
   // Align the next allocation. Storing the filler map without checking top is
   // safe in new-space because the limit of the heap is aligned there.
   if ((flags & DOUBLE_ALIGNMENT) != 0) {
-    DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
     DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
     Label aligned;
     test(result, Immediate(kDoubleAlignmentMask));
     j(zero, &aligned, Label::kNear);
-    if ((flags & PRETENURE_OLD_DATA_SPACE) != 0) {
+    if ((flags & PRETENURE) != 0) {
       cmp(result, Operand::StaticVariable(allocation_limit));
       j(above_equal, gc_required);
     }
@@ -1426,12 +1424,11 @@ void MacroAssembler::Allocate(Register object_size,
   // Align the next allocation. Storing the filler map without checking top is
   // safe in new-space because the limit of the heap is aligned there.
   if ((flags & DOUBLE_ALIGNMENT) != 0) {
-    DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
     DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
     Label aligned;
     test(result, Immediate(kDoubleAlignmentMask));
     j(zero, &aligned, Label::kNear);
-    if ((flags & PRETENURE_OLD_DATA_SPACE) != 0) {
+    if ((flags & PRETENURE) != 0) {
       cmp(result, Operand::StaticVariable(allocation_limit));
       j(above_equal, gc_required);
     }