[Bug tree-optimization/19788] Inconsistent handling of -1.
schlie at comcast dot net
gcc-bugzilla@gcc.gnu.org
Mon Feb 7 01:11:00 GMT 2005
------- Additional Comments From schlie at comcast dot net 2005-02-06 17:14 -------
(In reply to comment #1)
- as I'm curious as to what the "proper" interpretation/handling of
target dependant constant value casts should be; it seems that in
the provided example, the optimized transformations of 0xffffffff
to an (int)-1 intermediate value in bar & baz are consistent, assuming:
(((0xffffffff) >> ((sizeof(int) * BITS_PER_UNIT)) & 1)
however would have expected the comparison between a & b in baz
to have been optimized away; is this a reasonable expectation?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19788
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