[llvm] r183521 - Optimize BitVector::all().

[Jay Foad]

On 7 June 2013 15:14, Benjamin Kramer <benny.kra at googlemail.com> wrote:

> +    // For the last word check that the lower bits are ones. The unused
> bits are
> +    // always zero.
> +    return Bits[NumBitWords(size()) - 1] == ~(~0UL << (Size %
> BITWORD_SIZE));
>

This looks like it will do the wrong thing if Size is a multiple of
BITWORD_SIZE.

Jay.
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