MIPS64: Fix memory allocation when code range is used for LO space only.

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index c5f1a556f8469a9abbf676af206e2f118b6fd7be..0806b2565da68f802c9b06041efd8fe9858312dc 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -362,7 +362,8 @@ void MemoryAllocator::FreeMemory(base::VirtualMemory* reservation,
          !isolate_->code_range()->contains(
              static_cast<Address>(reservation->address())));
   DCHECK(executable == NOT_EXECUTABLE || isolate_->code_range() == NULL ||
-         !isolate_->code_range()->valid());
+         !isolate_->code_range()->valid() || size <= Page::kPageSize);
+
   reservation->Release();
 }
 
@@ -656,7 +657,7 @@ MemoryChunk* MemoryAllocator::AllocateChunk(intptr_t reserve_area_size,
     // Use code range only for large object space on mips64 to keep address
     // range within 256-MB memory region.
     if (isolate_->code_range() != NULL && isolate_->code_range()->valid() &&
-        commit_area_size > CodePageAreaSize()) {
+        reserve_area_size > CodePageAreaSize()) {
 #else
     if (isolate_->code_range() != NULL && isolate_->code_range()->valid()) {
 #endif