LinuxPPC problems

As I mentioned before, I did some trials on my LinuxPPC box last week
end. First I compiled with -O0. To my surprise, things got worse than -
O2. Seems tas() for PPC (storage/buffer/s_lock.c) never works if
compiled with -O0. Included are patches that should fix the problem
(of course I have confirmed -O2 works with this patch).

BTW, here is a platforms/regression test failure(serious one--backend
death) matrix.

            FreeBSD        LinuxPPC(-O0)    LinuxPPC(-O2)

constraints        GOOD        NG        NG
create_function1    GOOD        GOOD        NG
create_function2    GOOD        GOOD        NG
select_having        NG        NG        NG
select_views        GOOD        NG        NG
triggers        GOOD        NG        NG

I will look into LinuxPPC problems further.
--
Tatsuo Ishii
t-ishii@sra.co.jp
----------------------------------------------------------------------
*** s_lock.c.orig    Mon Aug 31 16:39:24 1998
--- s_lock.c    Mon Aug 31 17:38:34 1998
***************
*** 95,114 ****

  #if defined(PPC)
  /* Note: need a nice gcc constrained asm version so it can be inlined */
! int
! tas(volatile slock_t *lock)
  {
!     __asm__("lwarx    5,0,3    \n\
!             cmpwi    5,0        \n\
!             bne        fail    \n\
!             addi    5,5,1    \n\
              stwcx.  5,0,3    \n\
!              beq        success    \n\
! fail:        li        3,1        \n\
!             blr                \n\
! success:                    \n\
!             li 3,0            \n\
!             blr                \n\
      ");
  }
  #endif /* PPC */
--- 95,117 ----

  #if defined(PPC)
  /* Note: need a nice gcc constrained asm version so it can be inlined */
! static void
! tas_dummy()
  {
!     __asm__("        \n\
! .global        tas        \n\
! tas:                \n\
!         lwarx    5,0,3    \n\
!         cmpwi    5,0    \n\
!         bne    fail    \n\
!         addi    5,5,1    \n\
              stwcx.  5,0,3    \n\
!              beq    success    \n\
! fail:        li    3,1    \n\
!         blr        \n\
! success:            \n\
!         li 3,0        \n\
!             blr        \n\
      ");
  }
  #endif /* PPC */