RFC/RFA: patch for PR 22156: improve SRA for bit-fields

[Alexandre Oliva]

On May  7, 2007, "Dave Korn" <dave.korn@artimi.com> wrote:

> this isn't going to cause over-reads when someone uses bitfields to
> describe and access memory-mapped i/o registers, is it?

No, memory-mapped i/o registers are never automatic variables, which
AFAICT is the kind of stuff that SRA deals with.

-- 
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}