[Mesa-dev] [PATCH 09/14] i965/compaction: Add support for Gen5.

Jason Ekstrand jason at jlekstrand.net
Tue Sep 23 14:04:46 PDT 2014


On Tue, Sep 23, 2014 at 1:25 PM, Matt Turner <mattst88 at gmail.com> wrote:

> On Tue, Sep 23, 2014 at 1:10 PM, Jason Ekstrand <jason at jlekstrand.net>
> wrote:
> > On Thu, Aug 28, 2014 at 8:10 PM, Matt Turner <mattst88 at gmail.com> wrote:
> >> +            int jump = brw_inst_imm_d(brw, insn);
> >> +            int jump_compacted = jump / sizeof(brw_compact_inst);
> >> +            int jump_uncompacted = jump / sizeof(brw_inst);
> >> +
> >> +            target_old_ip = this_old_ip + jump_uncompacted;
> >> +            target_compacted_count = compacted_counts[target_old_ip];
> >> +            jump_compacted -= (target_compacted_count -
> >> this_compacted_count);
> >> +            brw_inst_set_imm_ud(brw, insn, jump_compacted *
> >> +                                           sizeof(brw_compact_inst));
> >
> >
> > Any reason why you're reading it as a signed value and then writing it
> back
> > in unsigned?
>
> IIRC brw_inst_set_imm_d() is broken. It's been long enough that I've
> forgotten the exact details, but _ud sets the exact bits you pass it,
> while _d does something wrong.
>

good enough for me
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