From: David Malcolm <dmalcolm@redhat.com>
To: Bernd Schmidt <bschmidt@redhat.com>, gcc-patches@gcc.gnu.org
Subject: Re: RTL frontend input format again (was Re: [PATCH 15/16] RTL frontend (rtl1), on top of dump reader)
Date: Wed, 19 Oct 2016 14:36:00 -0000 [thread overview]
Message-ID: <1476887750.10766.80.camel@redhat.com> (raw)
In-Reply-To: <0f83ea7f-136b-0b66-9068-f693e7b2f8d9@redhat.com>
On Fri, 2016-10-07 at 15:58 +0200, Bernd Schmidt wrote:
> On 10/07/2016 03:26 PM, David Malcolm wrote:
> >
> > We could simply print the INSN_UID for CODE_LABELs; something like
> > this
> > (see the "(code_label 16" below):
>
> I think that should work.
>
> > You appear to have trimmed the idea of enclosing the insns with
> > (basic-block) directives without commenting on it. Did you like
> > this
> > idea?
>
> Sorry - I appear to have completely missed it.
>
> > It would make the above look like:
> >
> > (basic-block 2
> > ;; insns snipped
> > (jump_insn (set (pc)
> > (if_then_else (ge (reg:CCGC 17 flags)
> > (const_int 0 [0]))
> > (label_ref 16)
> > (pc))) "test.c":3
> > -> 16)
> > ) ;; basic-block 2
> > (basic-block 4
> > (note [bb 4] NOTE_INSN_BASIC_BLOCK)
> > ;; insns snipped
> > (jump_insn (set (pc) (label_ref 20)) "test.c":4
> > -> 20)
> > ) ;; basic-block 4
> > (barrier)
> > (basic-block 5
> > (code_label 16 [1 uses])
> > (note [bb 5] NOTE_INSN_BASIC_BLOCK)
> > ;; etc
> > ) ;; basic-block 5
> >
> > Note how the above format expresses clearly that:
> > * the (barrier) is part of the insn chain, but not in a basic
> > block, and
> > * some insns can happen in a basic block
>
> That looks really nice IMO. Except maybe drop the "-> 16" bit for the
> jump_insn (that's the JUMP_LABEL, isn't it?)
In r241120 I dropped all dumping of the JUMP_LABEL when adding the
"compact" mode.
I'm now running into an issue with this as I update the __RTL in cc1
tests to use the new format, since various passes require the
JUMP_INSNs to have JUMP_LABEL data.
For reference the JUMP_LABEL is at idx 7 of JUMP_INSN, a code '0' field, it's dumped by a special-case in print-rtx.c:print_rtx_operand_code_0, around line 186:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/print-rtl.c;hb=HEAD#l186
OK if I simply reinstate the existing dump form for that in compact mode, or would you prefer a different syntax?
Maybe even just lose the newline in compact mode, giving something like the following:
Example of a jump with JUMP_LABEL == a LABEL_REF.
(cjump_insn (set (pc)
(if_then_else (ge (reg:CCGC flags)
(const_int 0))
(label_ref 16)
(pc))) (nil) -> 16)
Example of a jump with JUMP_LABEL == the simple_return_rtx singleton.
(cjump_insn (set (pc) (label_ref 3)) (nil) -> simple_return)
[...snip...]
Dave
next prev parent reply other threads:[~2016-10-19 14:36 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-05 15:44 [PATCH 00/16] RTL frontend (v3) David Malcolm
2016-10-05 15:44 ` [PATCH 08/16] (partially-approved): Introduce selftest::locate_file David Malcolm
2016-10-05 16:10 ` Bernd Schmidt
2016-10-05 15:44 ` [PATCH 07/16] read-md: add some helper functions David Malcolm
2016-10-05 15:57 ` Bernd Schmidt
2016-10-05 15:44 ` [PATCH 11/16] df selftests (v3) David Malcolm
2016-10-05 15:44 ` [PATCH 01/16] read-md.c: Add various cleanups to ~rtx_reader David Malcolm
2016-10-05 15:51 ` Bernd Schmidt
2016-10-11 15:15 ` David Malcolm
2016-10-12 21:57 ` Richard Sandiford
2016-10-14 17:45 ` [PATCH] read-md.c: Move various state to within class rtx_reader David Malcolm
2016-10-17 11:05 ` Bernd Schmidt
2016-10-17 11:37 ` Richard Sandiford
2016-10-17 16:27 ` [PATCH] read-md.c: Move various state to within class rtx_reader (v3) David Malcolm
2016-10-17 20:23 ` Richard Sandiford
2016-10-05 15:45 ` [PATCH 10/16] Introduce class function_reader (v3) David Malcolm
2016-10-05 16:00 ` Bernd Schmidt
2016-10-07 13:44 ` David Malcolm
2016-10-10 18:53 ` Richard Sandiford
2016-10-05 15:45 ` [PATCH 05/16] Introduce rtl_data::init_stack_alignment David Malcolm
2016-10-05 15:52 ` Bernd Schmidt
2016-10-05 15:45 ` [PATCH 15/16] RTL frontend (rtl1), on top of dump reader David Malcolm
2016-10-06 13:30 ` Bernd Schmidt
2016-10-06 19:53 ` RTL frontend input format again (was Re: [PATCH 15/16] RTL frontend (rtl1), on top of dump reader) David Malcolm
2016-10-06 19:59 ` David Malcolm
2016-10-07 10:38 ` Bernd Schmidt
2016-10-07 13:27 ` David Malcolm
2016-10-07 13:58 ` Bernd Schmidt
2016-10-07 18:08 ` David Malcolm
2016-10-12 10:45 ` [PATCH] print_rtx_function: integrate dumping of the CFG into the insn chain David Malcolm
2016-10-12 10:50 ` Bernd Schmidt
2016-10-12 17:17 ` [PATCH] Add a "compact" mode to print_rtx_function David Malcolm
2016-10-12 17:31 ` Bernd Schmidt
2016-10-12 20:06 ` [PATCH] (v2) " David Malcolm
2016-10-13 10:21 ` Bernd Schmidt
2016-10-13 15:22 ` [PATCH] Omit INSN_LOCATION from compact dumps David Malcolm
2016-10-13 15:50 ` Bernd Schmidt
2016-11-22 13:18 ` [PATCH] (v2) Add a "compact" mode to print_rtx_function Dominik Vogt
2016-11-22 13:32 ` Bernd Schmidt
2016-11-22 13:37 ` Jakub Jelinek
2016-11-22 14:25 ` David Malcolm
2016-11-22 14:39 ` Dominik Vogt
2016-11-22 14:38 ` Bernd Schmidt
2016-11-22 14:45 ` Jakub Jelinek
2016-11-22 15:38 ` David Malcolm
2016-11-25 16:37 ` Dominik Vogt
2016-12-01 10:13 ` [PING] " Dominik Vogt
2016-12-01 12:28 ` Bernd Schmidt
2016-12-02 12:36 ` Andreas Krebbel
2016-10-12 20:33 ` [PATCH] Tweaks " David Malcolm
2016-10-13 10:24 ` Bernd Schmidt
2016-10-13 14:08 ` David Malcolm
2016-10-13 14:18 ` Bernd Schmidt
2016-10-14 19:41 ` [PATCH] (v2) " David Malcolm
2016-10-14 20:07 ` Bernd Schmidt
2016-10-19 14:36 ` David Malcolm [this message]
2016-10-19 14:42 ` RTL frontend input format again (was Re: [PATCH 15/16] RTL frontend (rtl1), on top of dump reader) Bernd Schmidt
2016-10-19 17:19 ` David Malcolm
2016-10-19 17:22 ` Bernd Schmidt
2016-10-19 17:54 ` David Malcolm
2016-10-20 13:55 ` INSN_UIDs " David Malcolm
2016-10-20 14:11 ` Bernd Schmidt
2016-10-20 14:20 ` David Malcolm
2016-10-20 14:22 ` Bernd Schmidt
2016-10-26 18:19 ` [PATCH] Show INSN_UIDs in compact mode David Malcolm
2016-10-26 18:20 ` Bernd Schmidt
2016-10-06 15:24 ` [PATCH 15/16] RTL frontend (rtl1), on top of dump reader Bernd Schmidt
2016-10-07 16:22 ` [PATCH] RTL frontend (rtl1), on top of dump reader (v4) David Malcolm
2016-10-05 15:45 ` [PATCH 13/16] cse.c selftests David Malcolm
2016-10-05 15:45 ` [PATCH 02/16] (approved) Add selftest::read_file David Malcolm
2016-10-05 15:45 ` [PATCH 12/16] combine.c selftests (v2) David Malcolm
2016-10-05 15:45 ` [PATCH 16/16] Add "__RTL" to cc1 David Malcolm
2016-10-05 16:10 ` Joseph Myers
2016-10-07 15:27 ` [PATCH] Add "__RTL" to cc1 (v2) David Malcolm
2016-10-13 13:49 ` Richard Biener
2016-10-13 13:52 ` Bernd Schmidt
2016-10-14 9:33 ` Richard Biener
2016-10-14 9:48 ` Bernd Schmidt
2016-10-14 9:50 ` Richard Biener
2016-10-14 19:25 ` David Malcolm
2016-10-14 19:27 ` Bernd Schmidt
2016-10-14 19:35 ` David Malcolm
2016-10-14 19:23 ` David Malcolm
2016-10-05 15:45 ` [PATCH 14/16] RTL interpreter (work-in-progress) David Malcolm
2016-10-05 15:45 ` [PATCH 09/16] Split class rtx_reader into base_rtx_reader vs rtx_reader David Malcolm
2016-10-11 15:53 ` Bernd Schmidt
2016-10-18 20:30 ` David Malcolm
2016-10-19 14:45 ` Bernd Schmidt
2016-10-20 19:14 ` Richard Sandiford
2016-10-05 15:45 ` [PATCH 03/16] (approved) selftest.h: add temp_override fixture David Malcolm
2016-10-05 15:45 ` [PATCH 04/16] (approved) Expose forcibly_ggc_collect and run it after all selftests David Malcolm
2016-10-05 15:45 ` [PATCH 06/16] Introduce emit_status::ensure_regno_capacity David Malcolm
2016-10-05 15:55 ` Bernd Schmidt
2016-11-18 20:47 ` [PATCH] Introduce emit_status::ensure_regno_capacity (v5) David Malcolm
2016-11-22 13:34 ` Bernd Schmidt
2016-10-05 15:55 ` [PATCH 06/16] Introduce emit_status::ensure_regno_capacity Bernd Schmidt
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