Re: how to force mem constraint for symbol ?

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On Mon, Jul 08, 2019 at 07:18:00PM -0500, William Tambe wrote:
> On Sun, Jul 7, 2019 at 12:45 PM Segher Boessenkool
> <segher@xxxxxxxxxxxxxxxxxxx> wrote:
> > Yup.  And "A" is defined as being a mem, which makes no sense, and its
> > comment says it is a "memory address".
> 
> If not much effort, could you please provide the change I should make
> to my define_contraint ?
> 
> I tried the following two without success:
> 
> (define_constraint "A"
>  "A memory address."
> (ior (match_test "GET_CODE (XEXP (op, 0)) == SYMBOL_REF")
>            (match_test "GET_CODE (XEXP (op, 0)) == LABEL_REF")
>            (match_test "GET_CODE (XEXP (op, 0)) == CONST")))

Something like this.

(define_constraint "A"
  "A memory address."
  (match_code "const,symbol_ref,label_ref"))

Look at other ports?  aarch64's "S" looks a lot like this, for example.


Segher



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