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[174.21.149.226]) by smtp.gmail.com with ESMTPSA id z15sm10816196pfg.152.2020.03.30.11.43.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2020 11:43:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=1qFoEnRP59bn9KPnaesHADAuwvvkoBPpPEfqGhyETA0=; b=eIaguF3ar0LhhHgVdKVv+3K7eZA2GoVWhrG0r3uLoWcwxuy3zlz2qD63rxqBTTj+i8 3Q6UWjNpyVVHkJXYYn7e4LfLh+2iGtoLur1z6iFkNWwnHqZ4PSesjcj0lO34B0ykKZDb tWBi4XLPh1mMthC1eGBzFZNmp39TpY56GtvPQ03X1UH2HJsJevWY8RQrxXGy8ulsqFDo 0sGqPFUfborsqMpfxHAa5qttfpVGijTOuj20EkYEu2EM8DxmDp2OR5RaOQmIuqmg7YJ1 BXBH5KtCJ+j2SEr3s/boPxeYcpofWWcAWx3HPCL5YjUGNQEYpN/ZrGicYx9UTTwVjgC5 5zbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=1qFoEnRP59bn9KPnaesHADAuwvvkoBPpPEfqGhyETA0=; b=QkEnaJRSoX2JPthKBONRJryukJtAa5uoLggMKY2Rwd1PFSUObBryAkPa4p6XWp4LkX 6qXAZAYHI6Ns/8D2rnPb5zGVaW7R/EdnfkjQ4+LgK/Df6mq1h//OTQU6JgKybjyRpdjY 8f+oQ+ws6nz9LDEtUW8fHNGqhoy6FAlcXBKeUjB2ZzH3df0B7IEXpdC6FsT1o9LerL2M C5W+MSmDBPtLyuL5HGM/Ie/5jSONPfZFClFqeQhEDe8HoWa7deR2091Y8aBzOLNbC40R dHYBqYnplX8LOWdrjBypwtZFFIHMiIZsL7PX6HFQbWQ+Gdjdvj1xcZlQeoJrZmwOLhEq qfgQ== X-Gm-Message-State: AGi0PuYEJ7ls6xLp7pFgTA5ptPhWOE3a6omD3HLBZHtd9xwLhKKgRcye q7N/Btp2ukEOtOinO3XjnmTKJUFD19c= X-Google-Smtp-Source: APiQypLcIoX61OgltW/qahZHbPHpXg9Vzjq/HzsVD7jhWYQEn8hyRGrAyuCsgDZHvFqwwsOUHWXzMw== X-Received: by 2002:a63:fd4f:: with SMTP id m15mr7179947pgj.323.1585593815874; Mon, 30 Mar 2020 11:43:35 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH for-5.0] tcg/i386: Fix INDEX_op_dup2_vec Date: Mon, 30 Mar 2020 11:43:34 -0700 Message-Id: <20200330184334.1129-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::543 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: qemu-stable@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" We were only constructing the 64-bit element, and not replicating the 64-bit element across the rest of the vector. Cc: qemu-stable@nongnu.org Signed-off-by: Richard Henderson --- This bug is visible running RISU for aarch64 on x86_32. r~ --- tcg/i386/tcg-target.inc.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c index 223dba9c8c..7f61eeedd0 100644 --- a/tcg/i386/tcg-target.inc.c +++ b/tcg/i386/tcg-target.inc.c @@ -2855,9 +2855,13 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode = opc, goto gen_simd; #if TCG_TARGET_REG_BITS =3D=3D 32 case INDEX_op_dup2_vec: - /* Constraints have already placed both 32-bit inputs in xmm regs.= */ - insn =3D OPC_PUNPCKLDQ; - goto gen_simd; + /* First merge the two 32-bit inputs to a single 64-bit element. */ + tcg_out_vex_modrm(s, OPC_PUNPCKLDQ, a0, a1, a2); + /* Then replicate the 64-bit elements across the rest of the vecto= r. */ + if (type !=3D TCG_TYPE_V64) { + tcg_out_dup_vec(s, type, MO_64, a0, a0); + } + break; #endif case INDEX_op_abs_vec: insn =3D abs_insn[vece]; --=20 2.20.1