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Received: from DU2PR04MB8790.eurprd04.prod.outlook.com (2603:10a6:10:2e1::23) by AM9PR04MB8796.eurprd04.prod.outlook.com (2603:10a6:20b:40b::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7025.16; Mon, 20 Nov 2023 16:43:26 +0000 Received: from DU2PR04MB8790.eurprd04.prod.outlook.com ([fe80::eb8e:fa24:44c1:5d44]) by DU2PR04MB8790.eurprd04.prod.outlook.com ([fe80::eb8e:fa24:44c1:5d44%3]) with mapi id 15.20.7025.015; Mon, 20 Nov 2023 16:43:26 +0000 Message-ID: <3d25fba9-7a6d-44eb-8f01-5487925be681@suse.com> Date: Mon, 20 Nov 2023 17:43:24 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/8] Support APX NDD Content-Language: en-US To: "Cui, Lili" Cc: "Lu, Hongjiu" , "ccoutant@gmail.com" , "binutils@sourceware.org" , "Kong, Lingling" References: <20231102112911.2372810-1-lili.cui@intel.com> <20231102112911.2372810-6-lili.cui@intel.com> <5760c85c-6917-b3c6-0bab-3b5639fcfae5@suse.com> <14f7f847-8e71-4951-b644-999ca5e940b3@suse.com> From: Jan Beulich Autocrypt: addr=jbeulich@suse.com; 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Or in other words: Why are the other 3 >> ADD ones only added later? >> > > The three extra items of ADC are special, they support neither ND nor NF. ADD does not have this situation. The ND part of add is here, and the remaining part of NF place in NF patch. Why would ADD not have this situation? Without 2-operand EVEX templates, how would you deal with e.g. {evex} add %eax, %ecx when at the same time you (correctly) permit {evex} adc %eax, %ecx ? The difference between ADD and ADC is solely the presence / absence of the NF attribute. Jan