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Re: SH sibcalls
- To: gcc-patches at gcc dot gnu dot org
- Subject: Re: SH sibcalls
- From: Alexandre Oliva <aoliva at redhat dot com>
- Date: 23 Nov 2000 15:18:26 -0200
- Cc: amylaar at redhat dot com
- Organization: GCC Team, Red Hat
- References: <or3dgive0b.fsf@guarana.lsd.ic.unicamp.br>
On Nov 23, 2000, Alexandre Oliva <aoliva@redhat.com> wrote:
> I'm a bit unsure about whether it's more appropriate for `sibcalli'
> and `sibcalli_pcrel' and `sibcall_pcrel' to have type `jump_ind' or
> `call', but the way it is now (the latter is `call', the others are
> `jump_ind') appears to be working fine (i.e., no regressions in the
> testsuite).
> Ok to install?
Nope. There were actually 2 failures I had failed to notice before.
We must not assign a call-saved register to hold the address of the
function to be sibcalled, because the epilogue will overwrite it.
I'll probably have to create a new constraint to match only
call-clobbered registers. Meanwhile `z' (r0) will do. Ok to install
with this modification, assuming a new round of testing fixes the
problems without introducing new ones?
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me