From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: Laurent Vivier <laurent@vivier.eu>, Richard Henderson <rth@twiddle.net>
Cc: qemu-devel@nongnu.org, "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: [Qemu-devel] [PATCH 4/6] target/m68k: Optimize get_sr() using deposit_i32()
Date: Sun, 10 Mar 2019 01:34:26 +0100 [thread overview]
Message-ID: <20190310003428.11723-5-f4bug@amsat.org> (raw)
In-Reply-To: <20190310003428.11723-1-f4bug@amsat.org>
Doing so we free one tcg_temp.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
target/m68k/translate.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index ea95d55a11..f43ac07b7f 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -2217,15 +2217,11 @@ static TCGv gen_get_ccr(DisasContext *s)
static TCGv gen_get_sr(DisasContext *s)
{
- TCGv ccr;
- TCGv sr;
+ TCGv dest;
- ccr = gen_get_ccr(s);
- sr = tcg_temp_new();
- tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
- tcg_gen_or_i32(sr, sr, ccr);
- tcg_temp_free(ccr);
- return sr;
+ dest = gen_get_ccr(s);
+ tcg_gen_deposit_i32(dest, dest, QREG_SR, 5, 11);
+ return dest;
}
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
--
2.19.1
next prev parent reply other threads:[~2019-03-10 0:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-10 0:34 [Qemu-devel] [PATCH 0/6] target/m68k: Optimize few instructions using deposit/extraxt_i32() Philippe Mathieu-Daudé
2019-03-10 0:34 ` [Qemu-devel] [PATCH 1/6] target/m68k: Reduce the l1 TCGLabel scope Philippe Mathieu-Daudé
2019-03-11 14:46 ` Richard Henderson
2019-03-10 0:34 ` [Qemu-devel] [PATCH 2/6] target/m68k: Optimize the partset instruction using deposit_i32() Philippe Mathieu-Daudé
2019-03-11 14:46 ` Richard Henderson
2019-03-10 0:34 ` [Qemu-devel] [PATCH 3/6] target/m68k: Fix a tcg_temp leak Philippe Mathieu-Daudé
2019-03-11 14:48 ` Richard Henderson
2019-03-10 0:34 ` Philippe Mathieu-Daudé [this message]
2019-03-11 14:52 ` [Qemu-devel] [PATCH 4/6] target/m68k: Optimize get_sr() using deposit_i32() Richard Henderson
2019-03-10 0:34 ` [Qemu-devel] [PATCH 5/6] target/m68k: Optimize rotate_x() using extract_i32() Philippe Mathieu-Daudé
2019-03-11 14:59 ` Richard Henderson
2019-03-10 0:34 ` [Qemu-devel] [PATCH 6/6] target/m68k: Reduce the scope of the 'zero' tcg_temp Philippe Mathieu-Daudé
2019-03-11 14:58 ` Richard Henderson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190310003428.11723-5-f4bug@amsat.org \
--to=f4bug@amsat.org \
--cc=laurent@vivier.eu \
--cc=qemu-devel@nongnu.org \
--cc=rth@twiddle.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).