[m-rev.] for review: pack small args next to local secondary tags

[Zoltan Somogyi]

On Tue, 3 Jul 2018 21:14:22 -0400 (EDT), Julien Fischer <jfischer at opturion.com> wrote:

> 
> 
> On Tue, 3 Jul 2018, Julien Fischer wrote:
> 
> > On Mon, 2 Jul 2018, Zoltan Somogyi wrote:
> >
> >>  For review by anyone. Note that so far, I have bootchecked it
> >>  only in asm_fast.gc and hlc.gc with the new data representation
> >>  enabled, but I will test it in other grades and with the new
> >>  representation
> >>  disabled before commit.
> >
> > There are few tests cases (on my system) related to fixed size integers
> > currently failing in decldebug grades.  (One of which is the argument
> > packing test.)  (I've been meaning to investigate, but other things
> > keep getting in the way.)
> 
> Specifically, in asm_fast.gc.decldebug.trseg.stseg, the following 
> fail on my system (x86-64,linux):
> 
>     hard_coded/arith_int16
>     hard_coded/arith_int32
>     hard_coded/arith_int8
>     hard_coded/pack_int32
> 
> The packing one is most likely failing bcause the arithmetic ones are.
> (This looks like a regression of the issue fixed in commit b765dae,
> but it isn't since the test case for that passes.)

These failures are not caused by this diff, since they occur even in
workspaces without it. I will have a look after I split up the unify modules
and factor out commonalities, since I strongly suspect that the bug
is caused by code that *should* be common with the code fixed
by that commit, but isn't.

Zoltan.