Fix PR 85423 (Re: Fix PRs 80463, 83972, 83480)

[Alexander Monakov]

On Mon, 23 Apr 2018, Andrey Belevantsev wrote:

> Hello,
> 
> So this PR shows that I have incorrectly mirrored the conditional from
> sched-deps.c that creates the dependence from a debug insn on the previous
> insn (see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80463#c3 for the
> hunk).  Thus we have incorrectly discarded some legitimate debug-debug
> dependencies.  The straightforward fix works for all of four PRs, tested on
> x86-64.
> 
> I have put the test in gcc.dg though it requires -march=nano.  Do you want
> me to create an extra machine-dependent test?

I see Jakub addressed this question (thanks!) so please incorporate his
suggestion.  There's also a typo in the ChangeLog, OK with that fixed.

Alexander

> 2018-04-23  Andrey Belevantsev  <abel@ispras.ru>
> 
>         PR rtl-optimization/85423
> 
>        * sel-sched-ir.c (has_dependence_note_mem_dep): Only discard

Should be "has_dependence_note_dep" (without the "mem_" ;)

Alexander