[Bug middle-end/21082] &a[b] - &a[c] is not folded to b - c

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-18 03:19 -------
This should improve mgrid and IV selection.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21082