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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

  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

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