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Re: [PATCH] target/loongarch: Fix vldi inst


From: bibo mao
Subject: Re: [PATCH] target/loongarch: Fix vldi inst
Date: Tue, 24 Dec 2024 10:32:02 +0800
User-agent: Mozilla/5.0 (X11; Linux loongarch64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0



On 2024/12/19 下午8:23, Xianglai Li wrote:
From: ghy <2247883756@qq.com>

Refer to the link below for a description of the vldi instructions:
https://jia.je/unofficial-loongarch-intrinsics-guide/lsx/misc/#synopsis_88
Fixed errors in vldi instruction implementation.

Signed-off-by: Guo Hongyu <guohongyu24@mails.ucas.ac.cn>
Tested-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
---
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Hongyu Guo <guohongyu24@mails.ucas.ac.cn>
Cc: Song Gao <gaosong@loongson.cn>
Cc: Xianglai Li <lixianglai@loongson.cn>

  target/loongarch/tcg/insn_trans/trans_vec.c.inc | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/loongarch/tcg/insn_trans/trans_vec.c.inc 
b/target/loongarch/tcg/insn_trans/trans_vec.c.inc
index 92b1d22e28..d317dfcc1c 100644
--- a/target/loongarch/tcg/insn_trans/trans_vec.c.inc
+++ b/target/loongarch/tcg/insn_trans/trans_vec.c.inc
@@ -3480,7 +3480,7 @@ static uint64_t vldi_get_value(DisasContext *ctx, 
uint32_t imm)
          break;
      case 1:
          /* data: {2{16'0, imm[7:0], 8'0}} */
-        data = (t << 24) | (t << 8);
+        data = (t << 40) | (t << 8);
          break;
      case 2:
          /* data: {2{8'0, imm[7:0], 16'0}} */

Reviewed-by: Bibo Mao <maobibo@loongson.cn>




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