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[PATCH v3 25/29] target/sh4: Improve swap.b translation
From: |
Richard Henderson |
Subject: |
[PATCH v3 25/29] target/sh4: Improve swap.b translation |
Date: |
Fri, 25 Jun 2021 23:36:27 -0700 |
Remove TCG_BSWAP_IZ and the preceding zero-extension.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
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..4dcfff81f6 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
- [PATCH v3 08/29] tcg/ppc: Split out tcg_out_bswap16, (continued)
- [PATCH v3 08/29] tcg/ppc: Split out tcg_out_bswap16, Richard Henderson, 2021/06/26
- [PATCH v3 04/29] tcg/aarch64: Support bswap flags, Richard Henderson, 2021/06/26
- [PATCH v3 10/29] tcg/ppc: Split out tcg_out_bswap64, Richard Henderson, 2021/06/26
- [PATCH v3 12/29] tcg/ppc: Use power10 byte-reverse instructions, Richard Henderson, 2021/06/26
- [PATCH v3 16/29] tcg/tci: Support bswap flags, Richard Henderson, 2021/06/26
- [PATCH v3 15/29] tcg/mips: Support bswap flags in tcg_out_bswap32, Richard Henderson, 2021/06/26
- [PATCH v3 20/29] tcg: Make use of bswap flags in tcg_gen_qemu_st_*, Richard Henderson, 2021/06/26
- [PATCH v3 25/29] target/sh4: Improve swap.b translation,
Richard Henderson <=
- [PATCH v3 22/29] target/arm: Improve vector REV, Richard Henderson, 2021/06/26
- [PATCH v3 14/29] tcg/mips: Support bswap flags in tcg_out_bswap16, Richard Henderson, 2021/06/26
- [PATCH v3 17/29] tcg: Handle new bswap flags during optimize, Richard Henderson, 2021/06/26
- [PATCH v3 24/29] target/i386: Improve bswap translation, Richard Henderson, 2021/06/26
- [PATCH v3 19/29] tcg: Make use of bswap flags in tcg_gen_qemu_ld_*, Richard Henderson, 2021/06/26
- [PATCH v3 13/29] tcg/s390: Support bswap flags, Richard Henderson, 2021/06/26
- [PATCH v3 23/29] target/arm: Improve REVSH, Richard Henderson, 2021/06/26