Bootstrap failure on powerpc-apple-darwin

[Nathan Sidwell]

Andrew Pinski wrote:

> This one:
> 2004-10-28  Nathan Sidwell  <nathan@codesourcery.com>
> 
>         * bitmap.h (bitmap_empty_p): New.
>         (bitmap_and, bitmap_and_into, bitmap_and_compl,
>         bitmap_and_compl_into, bitmap_ior, bitmap_ior_into,
>         bitmap_ior_compl, bitmap_xor, bitmap_xor_into): New bitmap
>         operation macros.
> 
> -- Pinski

This is very strange.  Typo's excepting that replaced a direct calls
to a function with calls via macros.  How could that change the compiler's
behaviour?

It did add a bitmap_empty_p, but as that merely looks at a pointer,
I don't see how that could make things slower either.

 > This warning is erroneous. bi.ptr2 is not used at all.  The reason why
 > this happens is because the size (or the number of elements used) has
 > changed for bitmap_iterator which means that we no longer SRA the copy

I don't understand this bit. I did not change the iterators.

I will carefully look at the patch again, but I am confused.

nathan
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