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[PATCH 24/28] target/sh4: Improve swap.b translation
From: |
Richard Henderson |
Subject: |
[PATCH 24/28] target/sh4: Improve swap.b translation |
Date: |
Mon, 14 Jun 2021 01:37:56 -0700 |
Remove TCG_BSWAP_IZ and the preceding zero-extension.
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/sh4/translate.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 147219759b..f45515952f 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -676,8 +676,7 @@ static void _decode_opc(DisasContext * ctx)
case 0x6008: /* swap.b Rm,Rn */
{
TCGv low = tcg_temp_new();
- tcg_gen_ext16u_i32(low, REG(B7_4));
- tcg_gen_bswap16_i32(low, low, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
+ tcg_gen_bswap16_i32(low, REG(B7_4), 0);
tcg_gen_deposit_i32(REG(B11_8), REG(B7_4), low, 0, 16);
tcg_temp_free(low);
}
--
2.25.1
- Re: [PATCH 20/28] target/arm: Improve REV32, (continued)
- [PATCH 19/28] tcg: Make use of bswap flags in tcg_gen_qemu_st_*, Richard Henderson, 2021/06/14
- [PATCH 25/28] target/mips: Fix gen_mxu_s32ldd_s32lddr, Richard Henderson, 2021/06/14
- [PATCH 27/28] tcg/aarch64: Unset TCG_TARGET_HAS_MEMORY_BSWAP, Richard Henderson, 2021/06/14
- [PATCH 12/28] tcg/s390: Support bswap flags, Richard Henderson, 2021/06/14
- [PATCH 21/28] target/arm: Improve vector REV, Richard Henderson, 2021/06/14
- [PATCH 23/28] target/i386: Improve bswap translation, Richard Henderson, 2021/06/14
- [PATCH 24/28] target/sh4: Improve swap.b translation,
Richard Henderson <=
- [PATCH 22/28] target/arm: Improve REVSH, Richard Henderson, 2021/06/14
- [PATCH 28/28] tcg/riscv: Remove MO_BSWAP handling, Richard Henderson, 2021/06/14
- [PATCH 26/28] tcg/arm: Unset TCG_TARGET_HAS_MEMORY_BSWAP, Richard Henderson, 2021/06/14
- Re: [PATCH 00/28] tcg: bswap improvements, no-reply, 2021/06/14