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Re: SRA bit-field optimization
On Oct 7, 2007, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> What pessimization?
> The complex calculation now introduced by SRA:
It's not really introduced, it's just made explicit earlier, in the
tree level, such that we can better optimize it. I'll give you that
this isn't the simplest way to model operations on 32-bit words in
64-bit variables, but in the end we'd get the same code either way, at
least for variables that are not pushed to memory.
> I confirm that the verification failure of c37213b is fixed by the patch you
> posted in your previous message, thanks!
Thanks,
--
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}