[Bug middle-end/27016] ARM optimizer produces severely suboptimal code

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-04-04 08:16 -------
This code is undefined:
  len = ((unsigned int)&_ram_erase_sector_end 
         - (unsigned int)&_ram_erase_sector_start) / sizeof(unsigned int);

That is obviously undefined as taking the difference between two pointers which
are not in the same array is undefined code.

Even the comparision:
p_rom < p_end;
is undefined.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27016