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Mon, 07 Oct 2024 10:23:23 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHSHuwArw90GWBFykgu2auvyWB3GyNYYCJwuJENElgp/J4wk7K/tK9sI8U7PQrPPEfIFuIsTA== X-Received: by 2002:a5d:6147:0:b0:37c:d53a:6132 with SMTP id ffacd0b85a97d-37d0e77f6f3mr7386464f8f.31.1728321802971; Mon, 07 Oct 2024 10:23:22 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: mjt@tls.msk.ru, alex.bennee@linaro.org, richard.henderson@linaro.org, Pierrick Bouvier , qemu-stable@nongnu.org Subject: [PATCH 1/2] meson: define qemu_isa_flags Date: Mon, 7 Oct 2024 19:23:15 +0200 Message-ID: <20241007172317.1439564-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20241007172317.1439564-1-pbonzini@redhat.com> References: <20241007172317.1439564-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=-0.153, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: 1728321841094116600 Create a separate variable for compiler flags that enable specific instruction set extensions, so that they can be used with cc.compiles/cc.links. Note that -mfpmath=3Dsse is a code generation option but it does not enable new instructions, therefore I did not make it part of qemu_isa_flags. Suggested-by: Pierrick Bouvier Reviewed-by: Michael Tokarev Reviewed-by: Alex Benn=C3=A9e Tested-by: Alex Benn=C3=A9e Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini --- meson.build | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/meson.build b/meson.build index 76335bb2a51..65ea45cef03 100644 --- a/meson.build +++ b/meson.build @@ -335,6 +335,10 @@ elif host_os =3D=3D 'windows' endif endif =20 +# Choose instruction set (currently x86-only) + +qemu_isa_flags =3D [] + # __sync_fetch_and_and requires at least -march=3Di486. Many toolchains # use i686 as default anyway, but for those that don't, an explicit # specification is necessary @@ -351,7 +355,7 @@ if host_arch =3D=3D 'i386' and not cc.links(''' sfaa(&val); return val; }''') - qemu_common_flags =3D ['-march=3Di486'] + qemu_common_flags + qemu_isa_flags +=3D ['-march=3Di486'] endif =20 # Pick x86-64 baseline version @@ -367,29 +371,31 @@ if host_arch in ['i386', 'x86_64'] else # present on basically all processors but technically not part of # x86-64-v1, so only include -mneeded for x86-64 version 2 and above - qemu_common_flags =3D ['-mcx16'] + qemu_common_flags + qemu_isa_flags +=3D ['-mcx16'] endif endif if get_option('x86_version') >=3D '2' - qemu_common_flags =3D ['-mpopcnt'] + qemu_common_flags - qemu_common_flags =3D cc.get_supported_arguments('-mneeded') + qemu_co= mmon_flags + qemu_isa_flags +=3D ['-mpopcnt'] + qemu_isa_flags +=3D cc.get_supported_arguments('-mneeded') endif if get_option('x86_version') >=3D '3' - qemu_common_flags =3D ['-mmovbe', '-mabm', '-mbmi', '-mbmi2', '-mfma',= '-mf16c'] + qemu_common_flags + qemu_isa_flags +=3D ['-mmovbe', '-mabm', '-mbmi', '-mbmi2', '-mfma', '= -mf16c'] endif =20 # add required vector instruction set (each level implies those below) if get_option('x86_version') =3D=3D '1' - qemu_common_flags =3D ['-msse2'] + qemu_common_flags + qemu_isa_flags +=3D ['-msse2'] elif get_option('x86_version') =3D=3D '2' - qemu_common_flags =3D ['-msse4.2'] + qemu_common_flags + qemu_isa_flags +=3D ['-msse4.2'] elif get_option('x86_version') =3D=3D '3' - qemu_common_flags =3D ['-mavx2'] + qemu_common_flags + qemu_isa_flags +=3D ['-mavx2'] elif get_option('x86_version') =3D=3D '4' - qemu_common_flags =3D ['-mavx512f', '-mavx512bw', '-mavx512cd', '-mavx= 512dq', '-mavx512vl'] + qemu_common_flags + qemu_isa_flags +=3D ['-mavx512f', '-mavx512bw', '-mavx512cd', '-mavx51= 2dq', '-mavx512vl'] endif endif =20 +qemu_common_flags =3D qemu_isa_flags + qemu_common_flags + if get_option('prefer_static') qemu_ldflags +=3D get_option('b_pie') ? '-static-pie' : '-static' endif --=20 2.46.1