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 */
