I see. Thank you, will have a try soon.
Pan
-----Original Message-----
From: Jeff Law <jeffreya...@gmail.com>
Sent: Sunday, May 7, 2023 11:24 PM
To: Li, Pan2 <pan2...@intel.com>; Kito Cheng <kito.ch...@gmail.com>
Cc: juzhe.zh...@rivai.ai; rguenther <rguent...@suse.de>; richard.sandiford
<richard.sandif...@arm.com>; gcc-patches <gcc-patches@gcc.gnu.org>; palmer
<pal...@dabbelt.com>; jakub <ja...@redhat.com>
Subject: Re: [PATCH] machine_mode type size: Extend enum size from 8-bit to
16-bit
On 5/6/23 19:55, Li, Pan2 wrote:
> It looks like we cannot simply swap the code and mode in rtx_def, the code
> may have to be the same bits as the tree_code in tree_base. Or we will meet
> ICE like below.
>
> rtx_def code 16 => 8 bits.
> rtx_def mode 8 => 16 bits.
>
> static inline decl_or_value
> dv_from_value (rtx value)
> {
> decl_or_value dv;
> dv = value;
> gcc_checking_assert (dv_is_value_p (dv)); <= ICE
> return dv;
Ugh. We really just need to fix this code. It assumes particular structure
layouts and that's just wrong/dumb.
So I think think the first step is to fix up this crap code in var-tracking.
That should be a patch unto itself. Then we'd have the structure changes as a
separate change.
Jeff
