Allow direct allocation in old pointer space.

src/x64/builtins-x64.cc

Index: src/x64/builtins-x64.cc
diff --git a/src/x64/builtins-x64.cc b/src/x64/builtins-x64.cc
index 144962b8f4485c11f154f1e1001747ec481b0d90..fa99049466c0ef8df23557aaeebbbaa29cde48b4 100644
--- a/src/x64/builtins-x64.cc
+++ b/src/x64/builtins-x64.cc
@@ -1091,12 +1091,7 @@ static void AllocateEmptyJSArray(MacroAssembler* masm,
   if (initial_capacity > 0) {
     size += FixedArray::SizeFor(initial_capacity);
   }
-  __ AllocateInNewSpace(size,
-                        result,
-                        scratch2,
-                        scratch3,
-                        gc_required,
-                        TAG_OBJECT);
+  __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT);
 
   // Allocated the JSArray. Now initialize the fields except for the elements
   // array.
@@ -1619,12 +1614,12 @@ void Builtins::Generate_StringConstructCode(MacroAssembler* masm) {
 
   // Allocate a JSValue and put the tagged pointer into rax.
   Label gc_required;
-  __ AllocateInNewSpace(JSValue::kSize,
-                        rax,  // Result.
-                        rcx,  // New allocation top (we ignore it).
-                        no_reg,
-                        &gc_required,
-                        TAG_OBJECT);
+  __ Allocate(JSValue::kSize,
+              rax,  // Result.
+              rcx,  // New allocation top (we ignore it).
+              no_reg,
+              &gc_required,
+              TAG_OBJECT);
 
   // Set the map.
   __ LoadGlobalFunctionInitialMap(rdi, rcx);