[Bug debug/68860] [6/7 regression] FAIL: gcc.dg/guality/pr36728-1.c -flto -O3 -g line 16/7 arg1 == 1

["rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68860

--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 28 Apr 2016, seurer at linux dot vnet.ibm.com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68860
> 
> Bill Seurer <seurer at linux dot vnet.ibm.com> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |seurer at linux dot vnet.ibm.com
> 
> --- Comment #9 from Bill Seurer <seurer at linux dot vnet.ibm.com> ---
> The pr36728 and pr68860 test cases that check the arguments (where the
> arguments are unused) all currently (and for a long time) fail on power.  They
> show up as "optimized out" in gdb as in the initial report here.
> 
> Is there some point to testing the value of the unused arguments in these test
> cases?

I think it is supposed to check the DW_TAG_GNU_call_site_parameter stuff.

You may want to double-check that is the case on x86_64 and debug why
the dwarf2out code doesn't work on ppc (it does some "interesting"
RTL deciphering which may not work on ppc for one or another reason)