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([2602:ae:1541:f901:8bb4:5a9d:7ab7:b4b8]) by smtp.gmail.com with ESMTPSA id d9-20020a170902c18900b0019d397b0f18sm3530780pld.214.2023.04.07.19.43.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Apr 2023 19:43:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1680921809; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FDeASIhXoXuX3vLvF4wYaR7o+wyDzGwiI17/AXuSlGM=; b=bX5r0PoiTGPh+kw7i5vjujE6O4dHH9iKb23m1GNMZ5EBw8thUk0VNZ5M5gKuLfMjKB ijrrv/6b8FMM4djGDY/HE2cizf2MhcX5xxATBXSQzVc4TKfJZYcfhRk70AUqmp8s4dEZ KLRollHOEjdkgFi+mbPDX9fTD1RA3dwQ1jkrKd1HzPbFLORIe3Kx+D9E2+bJeyq6lpEg u6PRVs1N8HyzdKhNQVFQLokVihNorFtpvuw2h7Ti5RjUzQY6sJtxb3O9Xwh8Hso1xVn/ Gm7KTTYugjTh/AzTxX9bOW55MkEuwXesNG4J5GnKzVwsdMexDnC3lL+nbKGb5MYNHICN JgbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680921809; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FDeASIhXoXuX3vLvF4wYaR7o+wyDzGwiI17/AXuSlGM=; b=RZda/1tL3/RvwjaEtd5dfnxoDSp+e/W7sUDPTZPNKbegyAKKF5sAjgQhn6/3pVgbOZ PaxTQbK2atTqhTtd0s8s7KPbqQ37Uhkj56qRGy5+mjNXJLoeLAjhyDR7T7wxy8NHgqLH Zp4IcO7EoLTDAmrKY1fp3WdM7xkwazxsEQt5Vl1v1/Mib6qkoQFwleJ/Vd3ct9c/ieCB jq8oXiDItz0QvIbdAOkWxWFvw8lh29rhFI/YPvmYbXTWY9hvCAY/l+4HKDH8ELA/hx8r ut20WZw10S4nDGpZXJB5xxt4zp1jhuagapCbTlkw6NacEy40wzGoKvVVb5u4e8FyK+Ea fMSw== X-Gm-Message-State: AAQBX9da1ULZVpu7e2OG0g4xwo2ew2q3lsRiPYGhamr7cejLj96dIUqm XymVaTHv5yEY250ohErDr+kzwUtRwWSBoTG8BpI= X-Google-Smtp-Source: AKy350brlMqd7F1ibt7xsBb/+NvTFqDEQXuQQa/rlEhkM0CPq/wGUQjTbq5nKEDqTHr1drnE8Y8JDw== X-Received: by 2002:a17:902:c111:b0:1a2:9051:f0a3 with SMTP id 17-20020a170902c11100b001a29051f0a3mr4066030pli.24.1680921809232; Fri, 07 Apr 2023 19:43:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-s390x@nongnu.org, qemu-riscv@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH 14/42] tcg/i386: Conditionalize tcg_out_extu_i32_i64 Date: Fri, 7 Apr 2023 19:42:46 -0700 Message-Id: <20230408024314.3357414-16-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230408024314.3357414-1-richard.henderson@linaro.org> References: <20230408024314.3357414-1-richard.henderson@linaro.org> 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=2607:f8b0:4864:20::629; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x629.google.com X-Spam_score_int: 4 X-Spam_score: 0.4 X-Spam_bar: / X-Spam_report: (0.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, SUSPICIOUS_RECIPS=2.51 autolearn=no 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 @linaro.org) X-ZM-MESSAGEID: 1680921917167100002 Content-Type: text/plain; charset="utf-8" Since TCG_TYPE_I32 values are kept zero-extended in registers, via omission of the REXW bit, we need not extend if the register matches. This is already relied upon by qemu_{ld,st}. Signed-off-by: Richard Henderson --- tcg/i386/tcg-target.c.inc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 818e7cbc3d..71a2bff234 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -1306,7 +1306,9 @@ static void tcg_out_exts_i32_i64(TCGContext *s, TCGRe= g dest, TCGReg src) =20 static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg dest, TCGReg src) { - tcg_out_ext32u(s, dest, src); + if (dest !=3D src) { + tcg_out_ext32u(s, dest, src); + } } =20 static inline void tcg_out_bswap64(TCGContext *s, int reg) --=20 2.34.1