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Re: Constrain valid arguments to BIT_FIELD_REF
On Mar 9, 2008, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> I meant Ada can have non-integral members that are do not occupy an
>> integral number of bytes.
> Right, but the middle-end shouldn't need to touch them globally, the
> front-end is supposed to break up the accesses.
My point is that the front-end could just generate BIT_FIELD_REF,
without having to extract integral-typed words from the struct-typed
object to then be able to apply BIT_FIELD_REF on them, and then go
back to put the modified value back in place.
--
Alexandre Oliva http://www.lsd.ic.unicamp.br/~oliva/
FSF Latin America Board Member http://www.fsfla.org/
Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}