Re: [PATCH 07/14] perf annotate-data: Add update_insn_state()

[Namhyung Kim]

On Fri, Feb 2, 2024 at 6:49 PM Ian Rogers <irogers@xxxxxxxxxx> wrote:
>
> On Fri, Feb 2, 2024 at 2:05 PM Namhyung Kim <namhyung@xxxxxxxxxx> wrote:
> >
> > The update_insn_state() function is to update the type state table after
> > processing each instruction.  For now, it handles MOV (on x86) insn
> > to transfer type info from the source location to the target.
> >
> > The location can be a register or a stack slot.  Check carefully when
> > memory reference happens and fetch the type correctly.  It basically
> > ignores write to a memory since it doesn't change the type info.  One
> > exception is writes to (new) stack slots for register spilling.
>
> Just an aside, it seems a shame objdump can't do this tracking for us.
> objdump already augments its output with symbol and relocation data.

I'd be more than happy if objdump can display a relevant data type on
each instruction. :)

Thanks,
Namhyung