+Thu Jul 25 18:57:50 2002 J"orn Rennecke <joern.rennecke@superh.com>
+
+ * rtl.h (mem_attrs): Spell out more clearly the roles of ALIGN,
+ SIZE, EXPR and OFFSET.
+
2002-07-25 Richard Henderson <rth@redhat.com>
* emit-rtl.c (set_mem_attributes): Fix size and alignment thinkos
so MEMs that the same attributes share a data structure. This means
they cannot be modified in place. If any element is nonzero, it means
the value of the corresponding attribute is unknown. */
+/* ALIGN and SIZE are the alignment and size of the MEM itself,
+ while EXPR can describe a larger underlying object, which might have a
+ stricter alignment; OFFSET is the offset of the MEM within that object. */
typedef struct mem_attrs GTY(())
{
HOST_WIDE_INT alias; /* Memory alias set. */