From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Cc: Aurelien Jarno <aurelien@aurel32.net>
Subject: [Qemu-devel] [PATCH 05/11] target-sh4: optimize xtrct
Date: Mon, 17 Sep 2012 01:11:54 +0200 [thread overview]
Message-ID: <1347837120-14422-6-git-send-email-aurelien@aurel32.net> (raw)
In-Reply-To: <1347837120-14422-1-git-send-email-aurelien@aurel32.net>
The register being 32 bit long, after a shift to the right by 16 bits,
the upper 16 bit are already cleared. There is no need to call ext16u
to clear them.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
target-sh4/translate.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index 41a1f22..92c5a1f 100644
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -751,7 +751,6 @@ static void _decode_opc(DisasContext * ctx)
tcg_gen_shli_i32(high, REG(B7_4), 16);
low = tcg_temp_new();
tcg_gen_shri_i32(low, REG(B11_8), 16);
- tcg_gen_ext16u_i32(low, low);
tcg_gen_or_i32(REG(B11_8), high, low);
tcg_temp_free(low);
tcg_temp_free(high);
--
1.7.10.4
next prev parent reply other threads:[~2012-09-16 23:12 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-16 23:11 [Qemu-devel] [PATCH 00/11] target-sh4: misc optimizations and cleanup Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 01/11] target-sh4: mark a few helpers const and pure Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 02/11] target-sh4: use float32_muladd() to implement fmac Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 03/11] target-sh4: implement addc and subc using TCG Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 04/11] target-sh4: implement addv and subv " Aurelien Jarno
2012-09-16 23:11 ` Aurelien Jarno [this message]
2012-09-16 23:11 ` [Qemu-devel] [PATCH 06/11] target-sh4: optimize swap.w Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 07/11] target-sh4: remove gen_clr_t() and gen_set_t() Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 08/11] target-sh4: rework exceptions handling Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 09/11] target-sh4: cleanup DisasContext Aurelien Jarno
2012-09-16 23:11 ` [Qemu-devel] [PATCH 10/11] target-sh4: remove useless code Aurelien Jarno
2012-09-16 23:12 ` [Qemu-devel] [PATCH 11/11] gdbstub/sh4: fix build with USE_SOFTFLOAT_STRUCT_TYPES Aurelien Jarno
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