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Re: [PATCH 1/7] tcg/tcg-op: Document bswap16() byte pattern


From: Richard Henderson
Subject: Re: [PATCH 1/7] tcg/tcg-op: Document bswap16() byte pattern
Date: Tue, 22 Aug 2023 10:29:35 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0

On 8/22/23 10:22, Philippe Mathieu-Daudé wrote:
         } else {
             tcg_gen_shli_i32(t1, arg, 8);   /*  t1 = xab. (IZ=0) */
                                             /*       .ab. (IZ=1) */
         }

         tcg_gen_or_i32(ret, t0, t1);        /* ret = ..ba (IZ=1 or OZ=1) */
                                             /*     = ssba (OS=1)         */
                                             /*     = xxba (no flag)      */

Clearer with xaba for no flag?

Otherwise it looks ok.


r~



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