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([2602:47:d49d:ec01:9ad0:4307:7d39:bb61]) by smtp.gmail.com with ESMTPSA id y6-20020a17090ad0c600b00205f4f7a3b3sm1905086pjw.21.2022.10.05.20.44.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Oct 2022 20:44:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=msqK3kGUwRR1FwwwLv+55zHEqiPImyBWT8EbA4E7iuA=; b=l/ZMQvOZkdIWZoetYLtaLDi3NFYAzel0fUTlLgeRzyPIJuhRzM+3VNKpwY/48C4lbb dPVi+0bvTexk0l4mOR7Tr+hjKJZj91TzzjBe7SCHLk65PMrxYhRX8OZO5JDtxL1+l2eG eOYWazOhhTGhXIDTwvPy6DcxGc/Q9UXCQEu5Wal+McZ+MrGqh240QLU3kqn8Q05eFdT5 veesXqXvU2kGsWlcEvyv7YazTNPykZASeMF3jCl7BOcAoCOPGMFr3OygAsI1ogDDO5Sp TjtAUXcnecqpzs9jxfRP8TbxMTaATW7vdo0ggdUkmQ9nVVTMMN+1PodF30cC7P3Vf1CY mDpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=msqK3kGUwRR1FwwwLv+55zHEqiPImyBWT8EbA4E7iuA=; b=DOgIFWHXuMmXVkp/Upw1+Trj+RgRkXkq6Q2iv+FUHil8hi8eQesQ6rTWNO3plfuH2l 35B1HoQcAUi/BhDSUajCZ90dBoI8aExMExyI+Zti2QGyC5KdOOpIZcQtF424YNabQTi7 +jLydenHUyz4ZM+5rDxubZP/NQmhsny+pKVkaC+Ema2YN28w1cYAtgXSVfbtg/F2yp3K YgpwwrohPKBpFHJ9n5DBcL/yGLeGvmkt3ersUuR19KJ3HqnPHqPQLDOmD0NqRMqssmWa 3ILxaeFUvE+zUZbbpf0XO7fScaRmpPEAQr4YY9+3MfzGZaKYY+NOO7IehtnmbwpN9l3I 13ng== X-Gm-Message-State: ACrzQf2i3/w0cgxdMPVPPqSIgWkJqBMyvLANaHD7PfZskKXj2iLqR+wW xDPZjruOCgIyCLIW7Oji8+zFrWpj2y0VEg== X-Google-Smtp-Source: AMsMyM5i9KplsMH/yf1eDCBSnybR8xE99DZGKFCR5b66Rwi2XTf4YEbKHwvgTcIqoWuoKCLqOlE+2g== X-Received: by 2002:a17:902:c94b:b0:17f:5817:35e3 with SMTP id i11-20020a170902c94b00b0017f581735e3mr2449802pla.160.1665027884051; Wed, 05 Oct 2022 20:44:44 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org Subject: [PATCH 22/26] target/s390x: Pass original r2 register to BCR Date: Wed, 5 Oct 2022 20:44:17 -0700 Message-Id: <20221006034421.1179141-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221006034421.1179141-1-richard.henderson@linaro.org> References: <20221006034421.1179141-1-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::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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 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" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1665030036351100001 Content-Type: text/plain; charset="utf-8" We do not modify any general-purpose registers in BCR, which means that we may be able to avoid saving the value across a branch. Signed-off-by: Richard Henderson Reviewed-by: Ilya Leoshkevich --- target/s390x/tcg/translate.c | 10 ++++++++++ target/s390x/tcg/insn-data.def | 2 +- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index e6c7c2a6ae..b27e34f712 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -5704,6 +5704,16 @@ static void in2_r2_nz(DisasContext *s, DisasOps *o) } #define SPEC_in2_r2_nz 0 =20 +static void in2_r2_o_nz(DisasContext *s, DisasOps *o) +{ + int r2 =3D get_field(s, r2); + if (r2 !=3D 0) { + o->in2 =3D regs[r2]; + o->g_in2 =3D true; + } +} +#define SPEC_in2_r2_o_nz 0 + static void in2_r2_8s(DisasContext *s, DisasOps *o) { o->in2 =3D tcg_temp_new_i64(); diff --git a/target/s390x/tcg/insn-data.def b/target/s390x/tcg/insn-data.def index 6382ceabfc..79f9202ab2 100644 --- a/target/s390x/tcg/insn-data.def +++ b/target/s390x/tcg/insn-data.def @@ -121,7 +121,7 @@ /* BRANCH INDIRECT ON CONDITION */ C(0xe347, BIC, RXY_b, MIE2,0, m2_64w, 0, 0, bc, 0) /* BRANCH ON CONDITION */ - C(0x0700, BCR, RR_b, Z, 0, r2_nz, 0, 0, bc, 0) + C(0x0700, BCR, RR_b, Z, 0, r2_o_nz, 0, 0, bc, 0) C(0x4700, BC, RX_b, Z, 0, a2, 0, 0, bc, 0) /* BRANCH RELATIVE ON CONDITION */ C(0xa704, BRC, RI_c, Z, 0, 0, 0, 0, bc, 0) --=20 2.34.1