From: Segher Boessenkool <segher@kernel.crashing.org>
To: Henri Cloetens <henri.cloetens@blueice.be>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Question on gcc RTL and scheduling step.
Date: Thu, 27 Feb 2020 09:23:00 -0000 [thread overview]
Message-ID: <20200226215937.GP22482@gate.crashing.org> (raw)
In-Reply-To: <41ecc0c2-0bda-f22f-549e-e7fc7b3a8c7f@blueice.be>
Hi!
On Wed, Feb 26, 2020 at 06:03:18PM +0100, Henri Cloetens wrote:
> ;; *     11--> b 0: i 44
> {{%r31=%r31+0x18;%r0=[%r31+0x10];%r18=[%r31+0x8];clobber %r1;clobber
> %r19;};pc=return;}:LDST**
This is a "slim" RTL dump, it leaves out quite a lot of important info,
like modes. That info actually *is* there in the insn, usually, it just
isn't printed here.
> ***(insn:TI 44 27 28 2 (parallel [
> Â Â Â Â Â Â Â Â Â Â Â (parallel [
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (set (reg/f:SI 31 %r31)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (plus:SI (reg/f:SI 31 %r31)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (const_int 24
> [0x18])))
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (set (reg:DI 0 %r0)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (mem/c:DI (plus:SI (reg/f:SI
> 31 %r31)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (const_int
> 16 [0x10])) [2Â S8 A64]))
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (set (reg:DI 18 %r18)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (mem/c:DI (plus:SI (reg/f:SI
> 31 %r31)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (const_int 8
> [0x8])) [2Â S8 A64]))
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (clobber:SI (reg:DI 1 %r1))
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (clobber:SI (reg:DI 19 %r19))
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ])
> Â Â Â Â Â Â Â Â Â Â Â (set (pc)
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (return))
Yeah, parallel of parallel, there is your problem. You probably have a
parallel in a define_insn, but you already have an implicit one there?
A problem in your .md file, anyway.
Segher
prev parent reply other threads:[~2020-02-26 22:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 15:10 Henri Cloetens
2020-02-26 16:39 ` Segher Boessenkool
2020-02-26 17:02 ` Henri Cloetens
2020-02-26 22:00 ` Segher Boessenkool
2020-02-27 7:43 ` Henri Cloetens
2020-02-27 9:23 ` Segher Boessenkool [this message]
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