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[Qemu-devel] [PATCH 4/6] target/m68k: Optimize get_sr() using deposit_i3
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [PATCH 4/6] target/m68k: Optimize get_sr() using deposit_i32() |
Date: |
Sun, 10 Mar 2019 01:34:26 +0100 |
Doing so we free one tcg_temp.
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
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
- [Qemu-devel] [PATCH 0/6] target/m68k: Optimize few instructions using deposit/extraxt_i32(), Philippe Mathieu-Daudé, 2019/03/09
- [Qemu-devel] [PATCH 1/6] target/m68k: Reduce the l1 TCGLabel scope, Philippe Mathieu-Daudé, 2019/03/09
- [Qemu-devel] [PATCH 2/6] target/m68k: Optimize the partset instruction using deposit_i32(), Philippe Mathieu-Daudé, 2019/03/09
- [Qemu-devel] [PATCH 3/6] target/m68k: Fix a tcg_temp leak, Philippe Mathieu-Daudé, 2019/03/09
- [Qemu-devel] [PATCH 4/6] target/m68k: Optimize get_sr() using deposit_i32(),
Philippe Mathieu-Daudé <=
- [Qemu-devel] [PATCH 6/6] target/m68k: Reduce the scope of the 'zero' tcg_temp, Philippe Mathieu-Daudé, 2019/03/09
- [Qemu-devel] [PATCH 5/6] target/m68k: Optimize rotate_x() using extract_i32(), Philippe Mathieu-Daudé, 2019/03/09