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[Bug rtl-optimization/2962] inefficient code with and
- From: "rth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Sep 2004 03:37:03 -0000
- Subject: [Bug rtl-optimization/2962] inefficient code with and
- References: <20010526114559.2962.95318-quiet@bugs.debian.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rth at gcc dot gnu dot org 2004-09-13 03:37 -------
Note that either movzbl or movzwl is required on i686 to avoid a
partial register stall. Which is why things are generated this way.
It would perhaps be possible to avoid this for earlier processors,
but I don't believe this is worth the effort.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=2962