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Thu, 20 Jun 2024 02:54:32 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHnPa8kWYdxzlFcIF8xzlOsiOrWS0SvnAB7KORyD1+Nq8cVMqjtwkBlgW+ZQYqQaSRggZdxAQ== X-Received: by 2002:a17:907:ca1b:b0:a63:49d3:e1c5 with SMTP id a640c23a62f3a-a6fab7d6a8emr274207566b.64.1718877272442; Thu, 20 Jun 2024 02:54:32 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 04/10] target/i386: try not to force EFLAGS computation for CC_OP_ADOX/ADCX Date: Thu, 20 Jun 2024 11:54:13 +0200 Message-ID: <20240620095419.386958-5-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240620095419.386958-1-pbonzini@redhat.com> References: <20240620095419.386958-1-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: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.144, 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: 1718877396609100001 Content-Type: text/plain; charset="utf-8" When computing the "other" flag (CF for CC_OP_ADOX, OF for CC_OP_ADCX), take into account that it is already in the right position of cpu_cc_src, just like for CC_OP_EFLAGS. There is no need to call gen_compute_eflags(). Signed-off-by: Paolo Bonzini Reviewed-by: Richard Henderson --- target/i386/tcg/translate.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index 257110ac703..08db40681fa 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -928,6 +928,7 @@ static CCPrepare gen_prepare_eflags_c(DisasContext *s, = TCGv reg) .no_setcond =3D true }; =20 case CC_OP_EFLAGS: + case CC_OP_ADOX: case CC_OP_SARB ... CC_OP_SARQ: /* CC_SRC & 1 */ return (CCPrepare) { .cond =3D TCG_COND_TSTNE, @@ -994,6 +995,9 @@ static CCPrepare gen_prepare_eflags_o(DisasContext *s, = TCGv reg) return (CCPrepare) { .cond =3D TCG_COND_NE, .reg =3D cpu_cc_src }; default: gen_compute_eflags(s); + /* fallthrough */ + case CC_OP_EFLAGS: + case CC_OP_ADCX: return (CCPrepare) { .cond =3D TCG_COND_TSTNE, .reg =3D cpu_cc_src, .imm =3D CC_O }; } --=20 2.45.2