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From: | Richard Henderson |
Subject: | Re: [PATCH 20/30] tcg/loongarch: Implement setcond ops |
Date: | Mon, 20 Sep 2021 09:24:13 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 |
On 9/20/21 1:04 AM, WANG Xuerui wrote:
+ switch (cond) { + case TCG_COND_EQ: + tcg_out_opc_sub_d(s, ret, arg1, arg2); + tcg_out_opc_sltui(s, ret, ret, 1); + break; + case TCG_COND_NE: + tcg_out_opc_sub_d(s, ret, arg1, arg2); + tcg_out_opc_sltu(s, ret, TCG_REG_ZERO, ret); + break;
You accept zero as input; you'll want to skip the subtract in that case. r~
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