Tetsuo Handa wrote:
> Eric Paris wrote:
> > Interesting, is this a result of the compiler previously being able to
> > optimize the division since it could tell it was a power of 2 and now
> > that we have a private variable it can't? The patch can easily be
> > reverted without breaking anyone else....
>
I meant to say that it seems that GCC 3.x can optimize
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
for roundup((long long), (const)) case but cannot optimize
#define roundup(x, y) ( \
{ \
typeof(y) __y = y; \
(((x) + (__y - 1)) / __y) * __y; \
} \
)
for roundup((long long), (const)) case.
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