Re: Question on gcc RTL and scheduling step.

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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 [
>             (parallel [
>                     (set (reg/f:SI 31 %r31)
>                         (plus:SI (reg/f:SI 31 %r31)
>                             (const_int 24 
> [0x18])))
>                     (set (reg:DI 0 %r0)
>                         (mem/c:DI (plus:SI (reg/f:SI 
> 31 %r31)
>                                 (const_int 
> 16 [0x10])) [2  S8 A64]))
>                     (set (reg:DI 18 %r18)
>                         (mem/c:DI (plus:SI (reg/f:SI 
> 31 %r31)
>                                 (const_int 8 
> [0x8])) [2  S8 A64]))
>                     (clobber:SI (reg:DI 1 %r1))
>                     (clobber:SI (reg:DI 19 %r19))
>                 ])
>             (set (pc)
>                 (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



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