From: Uros Bizjak <ubizjak@gmail.com>
To: Ilya Enkovich <enkovich.gnu@gmail.com>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
"H.J. Lu" <hjl.tools@gmail.com>,
Jakub Jelinek <jakub@redhat.com>
Subject: Re: [RFC patch, i386]: Use STV pass to load/store any TImode constant using SSE insns
Date: Fri, 29 Apr 2016 09:49:00 -0000 [thread overview]
Message-ID: <CAFULd4bSJ3=JCvhX3RB1Fu5Pk+3MiUJXipx7pbqkPu=8Z2CiEw@mail.gmail.com> (raw)
In-Reply-To: <CAMbmDYbetEjt7iWKsxhnrwO3oZFYvKao8bJjJpo5rEGyyZ6JzQ@mail.gmail.com>
On Thu, Apr 28, 2016 at 12:36 PM, Ilya Enkovich <enkovich.gnu@gmail.com> wrote:
> That's what I have in my draft for DImode immediates:
>
> @@ -3114,6 +3123,20 @@ scalar_chain::build (bitmap candidates,
> unsigned insn_uid)
> BITMAP_FREE (queue);
> }
>
> +/* Return a cost of building a vector costant
> + instead of using a scalar one. */
> +
> +int
> +scalar_chain::vector_const_cost (rtx exp)
> +{
> + gcc_assert (CONST_INT_P (exp));
> +
> + if (const0_operand (exp, GET_MODE (exp))
> + || constm1_operand (exp, GET_MODE (exp)))
The above should just use
standard_sse_constant_p (exp, V2DImode).
Uros.
next prev parent reply other threads:[~2016-04-29 9:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 19:59 Uros Bizjak
2016-04-27 20:35 ` H.J. Lu
2016-04-28 10:36 ` Ilya Enkovich
2016-04-28 10:41 ` Jakub Jelinek
2016-04-28 10:45 ` Ilya Enkovich
2016-04-29 7:41 ` Jakub Jelinek
2016-04-28 10:43 ` Uros Bizjak
2016-04-28 10:50 ` Ilya Enkovich
2016-04-29 9:49 ` Uros Bizjak [this message]
2016-04-29 11:27 ` Ilya Enkovich
2016-04-29 11:56 ` Uros Bizjak
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