MIPS gas relaxation still doesn't work
Alexandre Oliva
aoliva@redhat.com
Wed Oct 16 06:39:00 GMT 2002
On Oct 16, 2002, "Maciej W. Rozycki" <macro@ds2.pg.gda.pl> wrote:
> On 15 Oct 2002, Alexandre Oliva wrote:
>> Except that, with the current implementation of branch relaxation,
>> when you enable it, each branch will mark the end of a frag, so the
>> assembler will be effectively unable to fill delay slots anyway, since
>> it won't bring instructions from the previous frag to the beginning of
>> the new frag.
> Too bad. But the marking could get disabled if ".set nomacro" was on for
> a branch, couldn't it?
Err... Yes, indeed, this is already the case, now that I think of
it. Only when the branch is a relaxation candidate does it become the
end of a variable-sized frag. Branches within nomacro sections are
not relaxed in the current implementation, so we handle them just as
before.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist Professional serial bug killer
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