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Fri, 31 May 2024 02:15:02 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFdETNJJXT9OknGXMid77He9GW/3CMmDMjtbYcal7FBm9eKvJ2FKJD9k+SRc4XISflOCu+Fcg== X-Received: by 2002:a17:906:1e09:b0:a62:8859:6aff with SMTP id a640c23a62f3a-a682022f887mr98312866b.30.1717146901971; Fri, 31 May 2024 02:15:01 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 1/6] host/i386: nothing looks at CPUINFO_SSE4 Date: Fri, 31 May 2024 11:14:52 +0200 Message-ID: <20240531091457.42200-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531091457.42200-1-pbonzini@redhat.com> References: <20240531091457.42200-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.085, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1717146977121100001 Content-Type: text/plain; charset="utf-8" The only user was the SSE4.1 variant of buffer_is_zero, which has been removed; code to compute CPUINFO_SSE4 is dead. Signed-off-by: Paolo Bonzini Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- host/include/i386/host/cpuinfo.h | 1 - util/cpuinfo-i386.c | 1 - 2 files changed, 2 deletions(-) diff --git a/host/include/i386/host/cpuinfo.h b/host/include/i386/host/cpui= nfo.h index b89e6d2e55a..9386c749881 100644 --- a/host/include/i386/host/cpuinfo.h +++ b/host/include/i386/host/cpuinfo.h @@ -16,7 +16,6 @@ #define CPUINFO_BMI1 (1u << 5) #define CPUINFO_BMI2 (1u << 6) #define CPUINFO_SSE2 (1u << 7) -#define CPUINFO_SSE4 (1u << 8) #define CPUINFO_AVX1 (1u << 9) #define CPUINFO_AVX2 (1u << 10) #define CPUINFO_AVX512F (1u << 11) diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index 9fddb18303d..18ab747a6d2 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -36,7 +36,6 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) =20 info |=3D (d & bit_CMOV ? CPUINFO_CMOV : 0); info |=3D (d & bit_SSE2 ? CPUINFO_SSE2 : 0); - info |=3D (c & bit_SSE4_1 ? CPUINFO_SSE4 : 0); info |=3D (c & bit_MOVBE ? CPUINFO_MOVBE : 0); info |=3D (c & bit_POPCNT ? CPUINFO_POPCNT : 0); info |=3D (c & bit_PCLMUL ? 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Fri, 31 May 2024 02:15:05 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFEm1OsF/9rnnYAYYHeV1/tTodgTufJ7dm8/QfqTnE+fYChYNF9ytShMHMQnos3aV60pXekjQ== X-Received: by 2002:a50:d596:0:b0:574:eb69:fadf with SMTP id 4fb4d7f45d1cf-57a3656455fmr818263a12.36.1717146904570; Fri, 31 May 2024 02:15:04 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 2/6] meson: assume x86-64-v2 baseline ISA Date: Fri, 31 May 2024 11:14:53 +0200 Message-ID: <20240531091457.42200-3-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531091457.42200-1-pbonzini@redhat.com> References: <20240531091457.42200-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.085, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1717146993231100001 Content-Type: text/plain; charset="utf-8" x86-64-v2 processors were released in 2008, assume that we have one. Unfortunately there is no GCC flag to enable all the features without disabling what came after; so enable them one by one. Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- meson.build | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/meson.build b/meson.build index 63866071445..19d1fc1f33b 100644 --- a/meson.build +++ b/meson.build @@ -336,9 +336,13 @@ if host_arch =3D=3D 'i386' and not cc.links(''' qemu_common_flags =3D ['-march=3Di486'] + qemu_common_flags endif =20 -# ??? Only extremely old AMD cpus do not have cmpxchg16b. -# If we truly care, we should simply detect this case at -# runtime and generate the fallback to serial emulation. +# Assume x86-64-v2 (minus CMPXCHG16B for 32-bit code) +if host_arch =3D=3D 'i386' + qemu_common_flags =3D ['-mfpmath=3Dsse'] + qemu_common_flags +endif +if host_arch in ['i386', 'x86_64'] + qemu_common_flags =3D ['-mpopcnt', '-msse4.2'] + qemu_common_flags +endif if host_arch =3D=3D 'x86_64' qemu_common_flags =3D ['-mcx16'] + qemu_common_flags endif --=20 2.45.1 From nobody Mon Nov 25 05:34:23 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1717146976; cv=none; d=zohomail.com; s=zohoarc; b=bkp3RjSqEh8D2utw+svHyeW8jkcjsTgpLQBh9O6CyBySJGB3B6yE0f89SiVqJPiqwo+pROW5fklX0nCu7MXKWE9rqhcQN98hwIXfvigveSyLiSz5X/nVKdtRHexYnZRKDDjI/gfxZajIMsVWWXPo95GVeYK/NutLArP45ZR/c0M= ARC-Message-Signature: i=1; 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charset="utf-8" QEMU now requires an x86-64-v2 host, which always has CMOV. Use it freely in TCG generated code. Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- host/include/i386/host/cpuinfo.h | 1 - util/cpuinfo-i386.c | 1 - tcg/i386/tcg-target.c.inc | 15 +-------------- 3 files changed, 1 insertion(+), 16 deletions(-) diff --git a/host/include/i386/host/cpuinfo.h b/host/include/i386/host/cpui= nfo.h index 9386c749881..81771733eaa 100644 --- a/host/include/i386/host/cpuinfo.h +++ b/host/include/i386/host/cpuinfo.h @@ -9,7 +9,6 @@ /* Digested version of */ =20 #define CPUINFO_ALWAYS (1u << 0) /* so cpuinfo is nonzero */ -#define CPUINFO_CMOV (1u << 1) #define CPUINFO_MOVBE (1u << 2) #define CPUINFO_LZCNT (1u << 3) #define CPUINFO_POPCNT (1u << 4) diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index 18ab747a6d2..90f92a42dc8 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -34,7 +34,6 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) if (max >=3D 1) { __cpuid(1, a, b, c, d); =20 - info |=3D (d & bit_CMOV ? CPUINFO_CMOV : 0); info |=3D (d & bit_SSE2 ? CPUINFO_SSE2 : 0); info |=3D (c & bit_MOVBE ? CPUINFO_MOVBE : 0); info |=3D (c & bit_POPCNT ? CPUINFO_POPCNT : 0); diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 59235b4f387..9a54ef7f8db 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -157,12 +157,6 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKi= nd kind, int slot) #define SOFTMMU_RESERVE_REGS \ (tcg_use_softmmu ? (1 << TCG_REG_L0) | (1 << TCG_REG_L1) : 0) =20 -/* For 64-bit, we always know that CMOV is available. */ -#if TCG_TARGET_REG_BITS =3D=3D 64 -# define have_cmov true -#else -# define have_cmov (cpuinfo & CPUINFO_CMOV) -#endif #define have_bmi2 (cpuinfo & CPUINFO_BMI2) #define have_lzcnt (cpuinfo & CPUINFO_LZCNT) =20 @@ -1815,14 +1809,7 @@ static void tcg_out_setcond2(TCGContext *s, const TC= GArg *args, static void tcg_out_cmov(TCGContext *s, int jcc, int rexw, TCGReg dest, TCGReg v1) { - if (have_cmov) { - tcg_out_modrm(s, OPC_CMOVCC | jcc | rexw, dest, v1); - } else { - TCGLabel *over =3D gen_new_label(); - tcg_out_jxx(s, jcc ^ 1, over, 1); - tcg_out_mov(s, TCG_TYPE_I32, dest, v1); - tcg_out_label(s, over); - } + tcg_out_modrm(s, OPC_CMOVCC | jcc | rexw, dest, v1); } =20 static void tcg_out_movcond(TCGContext *s, int rexw, TCGCond cond, --=20 2.45.1 From nobody Mon Nov 25 05:34:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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charset="utf-8" QEMU now requires an x86-64-v2 host, which has SSE2. Use it freely in buffer_is_zero. Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- host/include/i386/host/cpuinfo.h | 1 - util/bufferiszero.c | 2 +- util/cpuinfo-i386.c | 1 - 3 files changed, 1 insertion(+), 3 deletions(-) diff --git a/host/include/i386/host/cpuinfo.h b/host/include/i386/host/cpui= nfo.h index 81771733eaa..72f6fad61e5 100644 --- a/host/include/i386/host/cpuinfo.h +++ b/host/include/i386/host/cpuinfo.h @@ -14,7 +14,6 @@ #define CPUINFO_POPCNT (1u << 4) #define CPUINFO_BMI1 (1u << 5) #define CPUINFO_BMI2 (1u << 6) -#define CPUINFO_SSE2 (1u << 7) #define CPUINFO_AVX1 (1u << 9) #define CPUINFO_AVX2 (1u << 10) #define CPUINFO_AVX512F (1u << 11) diff --git a/util/bufferiszero.c b/util/bufferiszero.c index 74864f7b782..6245976eca1 100644 --- a/util/bufferiszero.c +++ b/util/bufferiszero.c @@ -195,7 +195,7 @@ static unsigned best_accel(void) return 2; } #endif - return info & CPUINFO_SSE2 ? 1 : 0; + return 1; } =20 #elif defined(__aarch64__) && defined(__ARM_NEON) diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index 90f92a42dc8..ca74ef04f54 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -34,7 +34,6 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) if (max >=3D 1) { __cpuid(1, a, b, c, d); =20 - info |=3D (d & bit_SSE2 ? CPUINFO_SSE2 : 0); info |=3D (c & bit_MOVBE ? CPUINFO_MOVBE : 0); info |=3D (c & bit_POPCNT ? CPUINFO_POPCNT : 0); info |=3D (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0); --=20 2.45.1 From nobody Mon Nov 25 05:34:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1717146968; cv=none; d=zohomail.com; s=zohoarc; b=WFi/5cgy7DzH6hVLcCk9jgApFSHglaFzEPdz9XbiuMXNjfgKT87uT/l1go+Bvm+0WKMt9/TUAHcracqU2VCeWaZ6gJBRm2Gx4KJNBdb7eM5TrddUij3FV5n1t6wTYtHEJxAFccFPc1JC0ClaAojtAo0Kiv8CbzP0LepDkJyJZo0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1717146968; h=Content-Type:Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=mHsImDo6WLnYTKBZiyQPWRB9x08dsxBTYQKEQprEz+o=; 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Fri, 31 May 2024 02:15:12 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGZmscw80tunY2W7MP2IFudhaGoC/y8qoNe1/NDXVj5V47MrN0R/oSyAkVs7iwjdI1OZ+XvhA== X-Received: by 2002:a17:906:f118:b0:a63:4e03:8abd with SMTP id a640c23a62f3a-a682263677cmr88211766b.67.1717146912304; Fri, 31 May 2024 02:15:12 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 5/6] host/i386: assume presence of SSSE3 Date: Fri, 31 May 2024 11:14:56 +0200 Message-ID: <20240531091457.42200-6-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531091457.42200-1-pbonzini@redhat.com> References: <20240531091457.42200-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.085, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1717146969057100001 Content-Type: text/plain; charset="utf-8" QEMU now requires an x86-64-v2 host, which has SSSE3 instructions (notably, PSHUFB which is used by QEMU's AES implementation). Do not bother checking it. Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- util/cpuinfo-i386.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index ca74ef04f54..b413075b9f2 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -38,8 +38,8 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) info |=3D (c & bit_POPCNT ? CPUINFO_POPCNT : 0); info |=3D (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0); =20 - /* Our AES support requires PSHUFB as well. */ - info |=3D ((c & bit_AES) && (c & bit_SSSE3) ? CPUINFO_AES : 0); + /* NOTE: our AES support requires SSSE3 (PSHUFB) as well. */ + info |=3D (c & bit_AES) ? CPUINFO_AES : 0; =20 /* For AVX features, we must check available and usable. */ if ((c & bit_AVX) && (c & bit_OSXSAVE)) { --=20 2.45.1 From nobody Mon Nov 25 05:34:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1717146993; cv=none; d=zohomail.com; s=zohoarc; b=adSvuw/jftnNxXglHdNwzUPt75Ieg0gFWWSotvgQx0PWv+KswyT3VACdBhI03Z/sUyrwv+l7tJ+AL9Qp6bHSt7SOqZ5m7jkyyA0u7T+FSxOI0bwPxrJXZgO6TQNMZITkk9ENjnnlq0RY4Xd3Tatetj95FZNVkG4xTYIPAttCAyQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1717146993; h=Content-Type:Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; 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Fri, 31 May 2024 02:15:15 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG32g53H0REfdLNPT2JVx+vN+ZZ2QJuEVDA7iYUsLJDwPNU3YAYXuQ3mvhejFQR9IVSzMLAeA== X-Received: by 2002:a05:6512:74d:b0:51f:2908:df48 with SMTP id 2adb3069b0e04-52b89570f5dmr684473e87.18.1717146914642; Fri, 31 May 2024 02:15:14 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 6/6] host/i386: assume presence of POPCNT Date: Fri, 31 May 2024 11:14:57 +0200 Message-ID: <20240531091457.42200-7-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240531091457.42200-1-pbonzini@redhat.com> References: <20240531091457.42200-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.085, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1717146995205100005 Content-Type: text/plain; charset="utf-8" QEMU now requires an x86-64-v2 host, which has the POPCNT instruction. Use it freely in TCG-generated code. Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson Reviewed-by: Zhao Liu --- host/include/i386/host/cpuinfo.h | 1 - tcg/i386/tcg-target.h | 5 ++--- util/cpuinfo-i386.c | 1 - 3 files changed, 2 insertions(+), 5 deletions(-) diff --git a/host/include/i386/host/cpuinfo.h b/host/include/i386/host/cpui= nfo.h index 72f6fad61e5..c1e94d75ce1 100644 --- a/host/include/i386/host/cpuinfo.h +++ b/host/include/i386/host/cpuinfo.h @@ -11,7 +11,6 @@ #define CPUINFO_ALWAYS (1u << 0) /* so cpuinfo is nonzero */ #define CPUINFO_MOVBE (1u << 2) #define CPUINFO_LZCNT (1u << 3) -#define CPUINFO_POPCNT (1u << 4) #define CPUINFO_BMI1 (1u << 5) #define CPUINFO_BMI2 (1u << 6) #define CPUINFO_AVX1 (1u << 9) diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 2f67a97e059..ecc69827287 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -111,7 +111,6 @@ typedef enum { #endif =20 #define have_bmi1 (cpuinfo & CPUINFO_BMI1) -#define have_popcnt (cpuinfo & CPUINFO_POPCNT) #define have_avx1 (cpuinfo & CPUINFO_AVX1) #define have_avx2 (cpuinfo & CPUINFO_AVX2) #define have_movbe (cpuinfo & CPUINFO_MOVBE) @@ -143,7 +142,7 @@ typedef enum { #define TCG_TARGET_HAS_nor_i32 0 #define TCG_TARGET_HAS_clz_i32 1 #define TCG_TARGET_HAS_ctz_i32 1 -#define TCG_TARGET_HAS_ctpop_i32 have_popcnt +#define TCG_TARGET_HAS_ctpop_i32 1 #define TCG_TARGET_HAS_deposit_i32 1 #define TCG_TARGET_HAS_extract_i32 1 #define TCG_TARGET_HAS_sextract_i32 1 @@ -178,7 +177,7 @@ typedef enum { #define TCG_TARGET_HAS_nor_i64 0 #define TCG_TARGET_HAS_clz_i64 1 #define TCG_TARGET_HAS_ctz_i64 1 -#define TCG_TARGET_HAS_ctpop_i64 have_popcnt +#define TCG_TARGET_HAS_ctpop_i64 1 #define TCG_TARGET_HAS_deposit_i64 1 #define TCG_TARGET_HAS_extract_i64 1 #define TCG_TARGET_HAS_sextract_i64 0 diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index b413075b9f2..883dfa4dd95 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -35,7 +35,6 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) __cpuid(1, a, b, c, d); =20 info |=3D (c & bit_MOVBE ? CPUINFO_MOVBE : 0); - info |=3D (c & bit_POPCNT ? CPUINFO_POPCNT : 0); info |=3D (c & bit_PCLMUL ? CPUINFO_PCLMUL : 0); =20 /* NOTE: our AES support requires SSSE3 (PSHUFB) as well. */ --=20 2.45.1