[Bug c/33111] Bad code generation with -O2 (ARM 7 architecture)

[gressau at optusnet dot com dot au]

------- Comment #6 from gressau at optusnet dot com dot au  2007-09-09 20:44 -------
Created an attachment (id=14180)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14180&action=view)
Test of optimized comparison (-O2)

Comparison of four consecutive bytes gets optimized (-O2) as comparison of a
word. The word address produced does not have the last two bits zero and the
ARM7 processor either ignores them (LPC2000) or data aborts (SAM7).


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gressau at optusnet dot com dot au changed:

           What    |Removed                     |Added
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  Attachment #14077|0                           |1
        is obsolete|                            |
  Attachment #14078|0                           |1
        is obsolete|                            |
  Attachment #14079|0                           |1
        is obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33111