Remove high promotion mode.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index a8a96f0f68b4a95b403a202643c4c44852809b9c..a2d2280d2cc3e28823676ed0a638fae9f7957f69 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1796,32 +1796,13 @@ void MacroAssembler::AllocateAsciiConsString(Register result,
                                              Register scratch1,
                                              Register scratch2,
                                              Label* gc_required) {
-  Label allocate_new_space, install_map;
-  AllocationFlags flags = TAG_OBJECT;
-
-  ExternalReference high_promotion_mode = ExternalReference::
-      new_space_high_promotion_mode_active_address(isolate());
-
-  test(Operand::StaticVariable(high_promotion_mode), Immediate(1));
-  j(zero, &allocate_new_space);
-
-  Allocate(ConsString::kSize,
-           result,
-           scratch1,
-           scratch2,
-           gc_required,
-           static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE));
-  jmp(&install_map);
-
-  bind(&allocate_new_space);
   Allocate(ConsString::kSize,
            result,
            scratch1,
            scratch2,
            gc_required,
-           flags);
+           TAG_OBJECT);
 
-  bind(&install_map);
   // Set the map. The other fields are left uninitialized.
   mov(FieldOperand(result, HeapObject::kMapOffset),
       Immediate(isolate()->factory()->cons_ascii_string_map()));