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    SubjectRe: BUGed to death
    Date
    On Monday 14 April 2003 22:19, Martin J. Bligh wrote:
    > Seems all these bug checks are fairly expensive. I can get 1%
    > back on system time for kernel compiles by changing BUG to
    > "do {} while (0)" to make them all compile away. Profiles aren't
    > very revealing though ... seems to be within experimental error ;-(
    >
    > I was pondering CONFIG_RUN_WILD_NAKED_AND_FREE, but maybe we can
    > just nail a few of the hottest path ones instead (I think you did
    > a couple already recently). I guess that suggestion isn't much
    > use without more profile data though ;-)

    You would think that the compiler would consider a branch leading to
    ud2 (i.e. BUG()) to be "unlikely", but it doesn't seem to. Maybe some
    improvement can be made there.

    All the best,

    Duncan.

    PS: gcc 3.2.3
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