From: "Richard Earnshaw (lists)" <Richard.Earnshaw@arm.com>
To: Christophe Lyon <christophe.lyon@linaro.org>,
gcc Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH 2/2] [ARM] Add support for -mpure-code in thumb-1 (v6m)
Date: Tue, 12 Nov 2019 11:27:00 -0000 [thread overview]
Message-ID: <a78f6289-6ba0-c0bf-0ea3-944aba235ba9@arm.com> (raw)
In-Reply-To: <CAKdteObyFGLY0bp7z5saUJca-Wy0OOhEkT75Ffv9SMzrJjJUhg@mail.gmail.com>
On 18/10/2019 14:18, Christophe Lyon wrote:
> +thumb1_gen_const_int (rtx op0, HOST_WIDE_INT op1)
> +{
> + bool mov_done_p = false;
> + int i;
> +
> + /* Emit upper 3 bytes if needed. */
> + for (i = 0; i < 3; i++)
> + {
> + int byte = (op1 >> (8 * (3 - i))) & 0xff;
> +
> + if (byte)
> + {
> + emit_set_insn (op0, mov_done_p
> + ? gen_rtx_PLUS (SImode,op0, GEN_INT (byte))
> + : GEN_INT (byte));
> + mov_done_p = true;
> + }
> +
> + if (mov_done_p)
> + emit_set_insn (op0, gen_rtx_ASHIFT (SImode, op0, GEN_INT (8)));
> + }
> +
> + /* Emit lower byte if needed. */
> + if (!mov_done_p)
> + emit_set_insn (op0, GEN_INT (op1 & 0xff));
> + else if (op1 & 0xff)
> + emit_set_insn (op0, gen_rtx_PLUS (SImode, op0, GEN_INT (op1 & 0xff)));
> +}
> +
What about Armv8-m.baseline, which has movw/movt?
R.
next prev parent reply other threads:[~2019-11-12 11:17 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 13:18 Christophe Lyon
2019-11-03 15:07 ` Christophe Lyon
2019-11-12 9:12 ` Christophe Lyon
2019-11-12 10:35 ` Kyrill Tkachov
2019-11-13 14:42 ` Christophe Lyon
2019-11-12 11:17 ` Richard Earnshaw (lists)
2019-11-13 14:46 ` Christophe Lyon
2019-11-18 9:04 ` Christophe Lyon
2019-11-26 15:39 ` Christophe Lyon
2019-12-05 10:13 ` Christophe Lyon
2019-12-11 17:19 ` Christophe Lyon
2019-12-17 10:26 ` Christophe Lyon
2019-12-17 11:02 ` Kyrill Tkachov
2019-12-17 14:36 ` Christophe Lyon
2019-12-17 15:39 ` Kyrill Tkachov
2019-12-17 15:51 ` Christophe Lyon
2020-01-13 15:19 ` Kyrill Tkachov
2020-01-14 14:09 ` Christophe Lyon
2020-01-14 14:10 ` Kyrill Tkachov
2020-01-14 14:38 ` Christophe Lyon
2019-11-12 11:27 ` Richard Earnshaw (lists) [this message]
2019-11-13 14:49 ` Christophe Lyon
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