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Fri, 11 Dec 2020 01:26:06 +0000 Subject: Re: [PATCH bpf-next v3] selftests/bpf: Drop the need for LLVM's llc To: Andrew Delgadillo , , Alexei Starovoitov , References: <6bdcc1e4-5ce2-7876-e48f-bce04f7298b6@fb.com> <20201211004344.3355074-1-adelg@google.com> From: Yonghong Song Message-ID: Date: Thu, 10 Dec 2020 17:26:04 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 In-Reply-To: <20201211004344.3355074-1-adelg@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [2620:10d:c090:400::5:ca19] X-ClientProxiedBy: BY3PR10CA0012.namprd10.prod.outlook.com (2603:10b6:a03:255::17) To BYAPR15MB4088.namprd15.prod.outlook.com (2603:10b6:a02:c3::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [IPv6:2620:10d:c085:21c8::113f] (2620:10d:c090:400::5:ca19) by BY3PR10CA0012.namprd10.prod.outlook.com (2603:10b6:a03:255::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3564.30 via Frontend Transport; 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Consequently, it > exposes many low level options about its backend. To avoid future bugs > introduced by using the raw LLC tool, use clang directly so that all > appropriate options are passed to the back end. > > Additionally, simplify the Makefile by removing the > CLANG_NATIVE_BPF_BUILD_RULE as it is not being use, stop passing > dwarfris attr since elfutils/libdw now supports the bpf backend (which > should work with any recent pahole), and stop passing alu32 since > -mcpu=v3 implies alu32. > > Signed-off-by: Andrew Delgadillo Acked-by: Yonghong Song