Enable pretenuring of fast literals in high promotion mode.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 9b648a33704ab45b09ea7a743c807de807b1894c..d2325b821f41a43a6d138924cf6275eec97aeb52 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -5104,7 +5104,13 @@ void LCodeGen::DoDeferredAllocate(LAllocate* instr) {
   PushSafepointRegistersScope scope(this);
   __ Integer32ToSmi(size, size);
   __ push(size);
-  CallRuntimeFromDeferred(Runtime::kAllocateInNewSpace, 1, instr);
+  if (instr->hydrogen()->CanAllocateInOldPointerSpace()) {
+    CallRuntimeFromDeferred(
+        Runtime::kAllocateInOldPointerSpace, 1, instr);
+  } else {
+    CallRuntimeFromDeferred(
+        Runtime::kAllocateInNewSpace, 1, instr);
+  }
   __ StoreToSafepointRegisterSlot(result, rax);
 }