Re: C++ Issue on GCC 3.0 branch

["John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>]

>   In message <200104250323.XAA05283@hiauly1.hia.nrc.ca>you write:
>   > 2001-01-04  John David Anglin  <dave@hiauly1.hia.nrc.ca>
>   > 
>   > 	* pa.c (hppa_init_pic_save): Update last_parm_insn after emitting
>   > 	pic save insn.
> This is fine for the mainline sources as well as the branch.
> 
> Thanks for tracking this down!

Before I installed this, I checked to make sure there were no gcc regressions
in the testsuite with -fPIC.  I found that in fact there were some.  It looks
like there are problems with the placement of the save instruction when
the first non parameter insn is nil.  I think we need to place the save
after the first insn (the one returned by get_insns ()) in this case.

Some of the fails in the testsuite are due to an abort at integrate.c:430
due to first insn not being a note:

;; Function z

(note 2 0 26 NOTE_INSN_DELETED 0)

(insn 26 2 3 (set (reg:SI 98)
        (reg:SI 19 %r19)) -1 (nil)
    (nil))

(note 3 26 5 NOTE_INSN_FUNCTION_BEG 0)

I am going to go back to the original form and not use
get_first_nonparm_insn ().  I think this will fix the problem.
This suggests that there is also a bug in get_eh_context () for
the same reason.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)