gcc-8.3/gcc/mem_attrs の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• gcc-8.3/gcc/mem_attrs へ行く。
• gcc-8.3/gcc/mem_attrs の差分を削除

*参照元 [#af2ba783]
#backlinks

*説明 [#sd532f06]
-パス: [[gcc-8.3/gcc/rtl.h]]

-FIXME: これは何？
--説明


**参考 [#d68c439f]


*実装 [#ee375979]
 /* 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 ();
 
-
--[[gcc-8.3/gcc/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;
 
-
--[[gcc-8.3/gcc/tree]]

   /* 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;
 
-
--[[gcc-8.3/gcc/poly_int64]]

   /* The alias set of the memory reference.  */
   alias_set_type alias;
 
-
--[[gcc-8.3/gcc/alias_set_type]]

   /* 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 [#g4cbdab3]