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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id c125sm22301879pfa.119.2020.07.22.02.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2020 02:20:28 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v2 40/76] target/riscv: rvv-0.9: floating-point move instruction Date: Wed, 22 Jul 2020 17:16:03 +0800 Message-Id: <20200722091641.8834-41-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200722091641.8834-1-frank.chang@sifive.com> References: <20200722091641.8834-1-frank.chang@sifive.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::1044; envelope-from=frank.chang@sifive.com; helo=mail-pj1-x1044.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Richard Henderson , Alistair Francis , Palmer Dabbelt , LIU Zhiwei Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Frank Chang NaN-boxed the scalar floating-point register based on RVV 0.9's rules. Signed-off-by: Frank Chang --- target/riscv/insn_trans/trans_rvv.inc.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index 780f8660bf..54c08ea1f8 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -2722,6 +2722,7 @@ GEN_OPFVF_TRANS(vfmerge_vfm, opfvf_check) static bool trans_vfmv_v_f(DisasContext *s, arg_vfmv_v_f *a) { if (require_rvv(s) && + has_ext(s, RVF) && vext_check_isa_ill(s) && require_align(a->rd, s->flmul) && (s->sew != 0)) { @@ -2744,7 +2745,20 @@ static bool trans_vfmv_v_f(DisasContext *s, arg_vfmv_v_f *a) dest = tcg_temp_new_ptr(); desc = tcg_const_i32(simd_desc(0, s->vlen / 8, data)); tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, a->rd)); - fns[s->sew - 1](dest, cpu_fpr[a->rs1], cpu_env, desc); + + if ((s->sew < MO_64 && has_ext(s, RVD)) || + (s->sew < MO_32)) { + /* SEW < FLEN */ + TCGv_i64 t1 = tcg_temp_new_i64(); + TCGv_i32 sew = tcg_const_i32(1 << (s->sew + 3)); + gen_helper_narrower_nanbox_fpr(t1, cpu_fpr[a->rs1], + sew, cpu_env); + fns[s->sew - 1](dest, t1, cpu_env, desc); + tcg_temp_free_i64(t1); + tcg_temp_free_i32(sew); + } else { + fns[s->sew - 1](dest, cpu_fpr[a->rs1], cpu_env, desc); + } tcg_temp_free_ptr(dest); tcg_temp_free_i32(desc);