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[97.113.183.164]) by smtp.gmail.com with ESMTPSA id g10sm17740595pfe.77.2018.01.05.19.14.21 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 05 Jan 2018 19:14:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=Mxo+uP67WSswZbYohOYvV1sBdXZaULpKkE4loDG62vs=; b=EdEUfyePa0L9ieIJSvNCusBtoOKI8KAIVb+GuTF6nTE+22+fkP0kXiocKJ6c5/CpzU cGCnNVmcKIk5gMKTMIk1FB68oksNbqzCGEHA8wPJJsKnyaC0B6gWkQKFDjTbaDNMGRqO dxsiS/+BnzzO9shhQthI0+COWk/BFgfIZRAFg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=Mxo+uP67WSswZbYohOYvV1sBdXZaULpKkE4loDG62vs=; b=peYpY/HCwtH9qS28Dd491k+FXI9s+ub/ButttO+X7/6+LsBoOGYLudHtTFD0GVTkYV 3dic6+Q0jZ5i4Dq5B3oQBZSkVM0NzEf6w5eCwjEm695cSTwFyz5JD1GNK1S/OmCnjGWM cOaEJa7CELSFE5NvehgmbqJvLWPMHaLLLToxp7RXUCBvGrFb+hZjbZ1DeK0sJ5LGonbN h+jWVS+8wODXsb3kAc27WK12u2qm6T2x5Ne5w1ZnO4ReZIi/30UHobjqqmT7de0oh2wt rIYrMric1/IZ2LVsBPxEYthfDZ8PQt34bP7rJIp0A+yEVWjUyqAXnqkmL2Wt0X9Vz6jR PZMg== X-Gm-Message-State: AKGB3mKgkJ6MSI2p/gTbQzSyfYtnxi8rbG77B1lOrmmKBdcP5VsGP23d 2lcT2KxojlzyWPY8XkgNMw6ZyYQRruQ= X-Google-Smtp-Source: ACJfBotz+GLq/4yDfckYK3pIE6t388pWJly+UksA5u3qFGLM1EDhWlLSSlKZgs27ZNtIi6GU9to+bQ== X-Received: by 10.99.99.131 with SMTP id x125mr3459910pgb.110.1515208462777; Fri, 05 Jan 2018 19:14:22 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Date: Fri, 5 Jan 2018 19:13:44 -0800 Message-Id: <20180106031346.6650-22-richard.henderson@linaro.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180106031346.6650-1-richard.henderson@linaro.org> References: <20180106031346.6650-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c05::241 Subject: [Qemu-devel] [PATCH v8 21/23] target/arm: Use vector infrastructure for aa64 widening shifts X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 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: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- target/arm/translate-a64.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 48caba3d9f..4f15e58556 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -8705,12 +8705,7 @@ static void handle_vec_simd_wshli(DisasContext *s, b= ool is_q, bool is_u, int size =3D 32 - clz32(immh) - 1; int immhb =3D immh << 3 | immb; int shift =3D immhb - (8 << size); - int dsize =3D 64; - int esize =3D 8 << size; - int elements =3D dsize/esize; - TCGv_i64 tcg_rn =3D new_tmp_a64(s); - TCGv_i64 tcg_rd =3D new_tmp_a64(s); - int i; + GVecGen2Fn *gvec_fn; =20 if (size >=3D 3) { unallocated_encoding(s); @@ -8721,18 +8716,18 @@ static void handle_vec_simd_wshli(DisasContext *s, = bool is_q, bool is_u, return; } =20 - /* For the LL variants the store is larger than the load, - * so if rd =3D=3D rn we would overwrite parts of our input. - * So load everything right now and use shifts in the main loop. - */ - read_vec_element(s, tcg_rn, rn, is_q ? 1 : 0, MO_64); - - for (i =3D 0; i < elements; i++) { - tcg_gen_shri_i64(tcg_rd, tcg_rn, i * esize); - ext_and_shift_reg(tcg_rd, tcg_rd, size | (!is_u << 2), 0); - tcg_gen_shli_i64(tcg_rd, tcg_rd, shift); - write_vec_element(s, tcg_rd, rd, i, size + 1); + if (is_u) { + gvec_fn =3D is_q ? tcg_gen_gvec_extuh : tcg_gen_gvec_extul; + } else { + gvec_fn =3D is_q ? tcg_gen_gvec_extsh : tcg_gen_gvec_extsl; } + gvec_fn(size, vec_full_reg_offset(s, rd), + vec_full_reg_offset(s, rn), 16, 16); + + /* Perform the shift in the wider format. */ + tcg_gen_gvec_shli(size + 1, vec_full_reg_offset(s, rd), + vec_full_reg_offset(s, rd), + 16, vec_full_reg_size(s), shift); } =20 /* SHRN/RSHRN - Shift right with narrowing (and potential rounding) */ --=20 2.14.3