[Bug rtl-optimization/42589] bswap optimization does not work for 32bit (but for 64bit) on 64bit registers
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Sun Jan 3 11:34:00 GMT 2010
------- Comment #1 from rguenth at gcc dot gnu dot org 2010-01-03 11:34 -------
Because with 32bit we do not have a 64bit bswap instruction and tmp is 64bit.
What would you expect here?
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Keywords| |missed-optimization
Summary|bswap optimization does not |bswap optimization does not
|work for 32bit (but for |work for 32bit (but for
|64bit) |64bit) on 64bit registers
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42589
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