Removed "bulk operations"

Negligible performance gains don't justify extra complexity.

ltable.h

@@ -87,32 +87,20 @@
 
 
 /*
-** The array part of a table is represented by an array of *cells*.
+** The array part of a table is represented by an array of cells.
 ** Each cell is composed of NM tags followed by NM values, so that
 ** no space is wasted in padding.
 */
 #define NM      cast_uint(sizeof(Value))
 
-
-/*
-** A few operations on arrays can be performed "in bulk", treating all
-** tags of a cell as a simple (or a few) word(s). The next constant is
-** the number of words to cover the tags of a cell. (In conventional
-** architectures that will be 1 or 2.)
-*/
-#define BKSZ	cast_int((NM - 1) / sizeof(lua_Unsigned) + 1)
-
 struct ArrayCell {
-  union {
-    lua_Unsigned bulk[BKSZ];  /* for "bulk" operations */
-    lu_byte tag[NM];
-  } u;
+  lu_byte tag[NM];
   Value value[NM];
 };
 
 
 /* Computes the address of the tag for the abstract index 'k' */
-#define getArrTag(t,k)	(&(t)->array[(k)/NM].u.tag[(k)%NM])
+#define getArrTag(t,k)	(&(t)->array[(k)/NM].tag[(k)%NM])
 
 /* Computes the address of the value for the abstract index 'k' */
 #define getArrVal(t,k)	(&(t)->array[(k)/NM].value[(k)%NM])