Bump MaxRegularSpaceAllocationSize to InitialSemiSpaceSize() * 4/5

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index d4425ea6a1bc8961e5344acdc8991094f8e66743..3dcb3838688d212b149592b953ad2727201e75af 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -6746,6 +6746,12 @@ bool Heap::ConfigureHeap(int max_semispace_size,
                                  RoundUp(max_old_generation_size_,
                                          Page::kPageSize));
 
+  // We rely on being able to allocate new arrays in paged spaces.
+  ASSERT(MaxRegularSpaceAllocationSize() >=
+         (JSArray::kSize +
+          FixedArray::SizeFor(JSObject::kInitialMaxFastElementArray) +
+          AllocationMemento::kSize));
+
   configured_ = true;
   return true;
 }