参照元†
/* Structure used to describe the attributes of a MEM. These are hashed
so MEMs that the same attributes share a data structure. This means
they cannot be modified in place. */
struct GTY(()) mem_attrs
{
mem_attrs ();
/* The expression that the MEM accesses, or null if not known.
This expression might be larger than the memory reference itself.
(In other words, the MEM might access only part of the object.) */
tree expr;
/* The offset of the memory reference from the start of EXPR.
Only valid if OFFSET_KNOWN_P. */
poly_int64 offset;
/* The size of the memory reference in bytes. Only valid if
SIZE_KNOWN_P. */
poly_int64 size;
/* The alias set of the memory reference. */
alias_set_type alias;
/* The alignment of the reference in bits. Always a multiple of
BITS_PER_UNIT. Note that EXPR may have a stricter alignment
than the memory reference itself. */
unsigned int align;
/* The address space that the memory reference uses. */
unsigned char addrspace;
/* True if OFFSET is known. */
bool offset_known_p;
/* True if SIZE is known. */
bool size_known_p;
};
コメント†
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
