This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Unnecessary stack alignment on SH
- To: gcc-patches at gcc dot gnu dot org
- Subject: Unnecessary stack alignment on SH
- From: Alexandre Oliva <aoliva at redhat dot com>
- Date: 20 Oct 2000 11:29:42 -0200
- Organization: GCC Team, Red Hat
I've noticed the SH port has been emitting extraneous stack
adjustments before function calls, even when the stack is already
properly aligned. Fixed with this patch. Ok to install?
Index: gcc/ChangeLog
from Alexandre Oliva <aoliva@redhat.com>
* calls.c (combine_pending_stack_adjustment_and_call): Don't
adjust stack when unadjusted_alignment ends up as zero.
Index: gcc/calls.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/calls.c,v
retrieving revision 1.159
diff -u -p -r1.159 calls.c
--- gcc/calls.c 2000/10/07 20:53:21 1.159
+++ gcc/calls.c 2000/10/20 13:26:05
@@ -1929,7 +1929,7 @@ combine_pending_stack_adjustment_and_cal
after the arguments are pushed. */
if (preferred_unit_stack_boundary > 1)
{
- if (unadjusted_alignment >= 0)
+ if (unadjusted_alignment > 0)
adjustment -= preferred_unit_stack_boundary - unadjusted_alignment;
else
adjustment += unadjusted_alignment;
--
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