Fix compile error on arm.

src/regexp/regexp-ast.h

Index: src/regexp/regexp-ast.h
diff --git a/src/regexp/regexp-ast.h b/src/regexp/regexp-ast.h
index 89cbf9b9ff94c0eacdb3bbddce680c7d57aa3765..fbe9c750790efde25299766265c647d2d43ddbcc 100644
--- a/src/regexp/regexp-ast.h
+++ b/src/regexp/regexp-ast.h
@@ -79,7 +79,8 @@ class CharacterRange {
   // For compatibility with the CHECK_OK macro
   CharacterRange(void* null) { DCHECK_NULL(null); }  // NOLINT
   CharacterRange(uc32 from, uc32 to) : from_(from), to_(to) {
-    DCHECK(from <= to);
+    DCHECK(0 <= from && to <= String::kMaxCodePoint);
+    DCHECK(static_cast<uint32_t>(from) <= static_cast<uint32_t>(to));
   }
   static void AddClassEscape(uc16 type, ZoneList<CharacterRange>* ranges,
                              Zone* zone);
@@ -88,8 +89,6 @@ class CharacterRange {
     return CharacterRange(value, value);
   }
   static inline CharacterRange Range(uc32 from, uc32 to) {
-    DCHECK(0 <= from && to <= String::kMaxCodePoint);
-    DCHECK(static_cast<uint32_t>(from) <= static_cast<uint32_t>(to));
     return CharacterRange(from, to);
   }
   static inline CharacterRange Everything() {