| Message ID | 20240503030214.86681-3-jhubbard@nvidia.com |
|---|---|
| State | Superseded |
| Headers | show
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Shutemov" <kirill.shutemov@linux.intel.com>, Ingo Molnar <mingo@kernel.org>, Binbin Wu <binbin.wu@linux.intel.com>, Alexey Dobriyan <adobriyan@gmail.com>, Rick Edgecombe <rick.p.edgecombe@intel.com>, Sohil Mehta <sohil.mehta@intel.com>, Yu-cheng Yu <yu-cheng.yu@intel.com>, Dave Hansen <dave.hansen@linux.intel.com>, Valentin Obst <kernel@valentinobst.de>, linux-kselftest@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>, llvm@lists.linux.dev, x86@kernel.org, John Hubbard <jhubbard@nvidia.com> Subject: [PATCH 2/7] selftests/x86: build test_FISTTP.c with clang Date: Thu, 2 May 2024 20:02:09 -0700 Message-ID: <20240503030214.86681-3-jhubbard@nvidia.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240503030214.86681-1-jhubbard@nvidia.com> References: <20240503030214.86681-1-jhubbard@nvidia.com> X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: BYAPR02CA0055.namprd02.prod.outlook.com (2603:10b6:a03:54::32) To BY5PR12MB4130.namprd12.prod.outlook.com (2603:10b6:a03:20b::16) Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: <linux-kselftest.vger.kernel.org> List-Subscribe: <mailto:linux-kselftest+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-kselftest+unsubscribe@vger.kernel.org> MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR12MB4130:EE_|LV8PR12MB9109:EE_ X-MS-Office365-Filtering-Correlation-Id: 8ffb178f-dc8c-4d00-6581-08dc6b1d7135 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|7416005|376005|366007|1800799015; 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selftests/x86: fix build errors and warnings found via clang
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expand
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diff --git a/tools/testing/selftests/x86/test_FISTTP.c b/tools/testing/selftests/x86/test_FISTTP.c index 09789c0ce3e9..b9ae9d8cebcb 100644 --- a/tools/testing/selftests/x86/test_FISTTP.c +++ b/tools/testing/selftests/x86/test_FISTTP.c @@ -25,7 +25,7 @@ int test(void) feclearexcept(FE_DIVBYZERO|FE_INEXACT|FE_INVALID|FE_OVERFLOW|FE_UNDERFLOW); asm volatile ("\n" " fld1""\n" - " fisttp res16""\n" + " fisttps res16""\n" " fld1""\n" " fisttpl res32""\n" " fld1""\n" @@ -45,7 +45,7 @@ int test(void) feclearexcept(FE_DIVBYZERO|FE_INEXACT|FE_INVALID|FE_OVERFLOW|FE_UNDERFLOW); asm volatile ("\n" " fldpi""\n" - " fisttp res16""\n" + " fisttps res16""\n" " fldpi""\n" " fisttpl res32""\n" " fldpi""\n" @@ -66,7 +66,7 @@ int test(void) asm volatile ("\n" " fldpi""\n" " fchs""\n" - " fisttp res16""\n" + " fisttps res16""\n" " fldpi""\n" " fchs""\n" " fisttpl res32""\n" @@ -88,7 +88,7 @@ int test(void) feclearexcept(FE_DIVBYZERO|FE_INEXACT|FE_INVALID|FE_OVERFLOW|FE_UNDERFLOW); asm volatile ("\n" " fldln2""\n" - " fisttp res16""\n" + " fisttps res16""\n" " fldln2""\n" " fisttpl res32""\n" " fldln2""\n"
First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via: make LLVM=1 -C tools/testing/selftests ...the build fails because clang inline asm requires size suffixes for instructions, including the fisttp instruction. In this case, the 16-bit suffix 's' is missing. Fix by adding an 's' (short) suffix in each place that it is missing. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Signed-off-by: John Hubbard <jhubbard@nvidia.com> --- tools/testing/selftests/x86/test_FISTTP.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)