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Mon, 16 Mar 2020 21:47:11 -0700 (PDT) Received: from Myrtle-ZP-Model0.amd.com.amd.com ([165.204.156.251]) by smtp.gmail.com with ESMTPSA id md20sm1218661pjb.15.2020.03.16.21.47.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Mar 2020 21:47:11 -0700 (PDT) X-Google-Original-From: Prem Mallappa To: libc-alpha@sourceware.org, codonell@redhat.com, schwab@suse.com, FWeimer@redhat.com Subject: [PATCH 2/3] x86: Add AMD Zen and AVX2/AVX platform support Date: Tue, 17 Mar 2020 10:16:45 +0530 Message-Id: <20200317044646.29707-3-PMallappa@amd.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200317044646.29707-1-PMallappa@amd.com> References: <20200317044646.29707-1-PMallappa@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Prem Mallappa via Libc-alpha Reply-To: Prem Mallappa Cc: Prem Mallappa Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" From: Prem Mallappa Priority as below - AVX512 - Haswell/Zen as they are superset of AVX2/AVX - AVX2 - AVX Signed-off-by: Prem Mallappa --- sysdeps/x86/cpu-features.c | 30 ++++++++++++++++++++++-------- 1 file changed, 22 insertions(+), 8 deletions(-) diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index a36f385976..2097107968 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -328,20 +328,34 @@ set_platform (struct cpu_features *cpu_features) GLRO(dl_hwcap) |= HWCAP_X86_AVX512_1; } } + } - if (platform == NULL - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) - && CPU_FEATURES_ARCH_P (cpu_features, FMA_Usable) - && CPU_FEATURES_CPU_P (cpu_features, BMI1) - && CPU_FEATURES_CPU_P (cpu_features, BMI2) - && CPU_FEATURES_CPU_P (cpu_features, LZCNT) - && CPU_FEATURES_CPU_P (cpu_features, MOVBE) - && CPU_FEATURES_CPU_P (cpu_features, POPCNT)) + if (platform == NULL + && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, FMA_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI1) + && CPU_FEATURES_CPU_P (cpu_features, BMI2) + && CPU_FEATURES_CPU_P (cpu_features, LZCNT) + && CPU_FEATURES_CPU_P (cpu_features, MOVBE) + && CPU_FEATURES_CPU_P (cpu_features, POPCNT)) + { + if (cpu_features->basic.kind == arch_kind_intel) platform = "haswell"; + else if (cpu_features->basic.kind == arch_kind_amd) + platform = "zen"; } + if (platform == NULL + && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable)) + platform = "generic-avx2"; + + if (platform == NULL + && CPU_FEATURES_ARCH_P (cpu_features, AVX_Usable)) + platform = "generic-avx"; + if (platform != NULL) GLRO(dl_platform) = platform; + #else GLRO(dl_hwcap) = 0; if (CPU_FEATURES_CPU_P (cpu_features, SSE2)) -- 2.20.1