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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id l12sm3080344wrb.81.2019.06.13.07.37.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 13 Jun 2019 07:37:43 -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=vg7Xo5/UC1VbFfsv57lBg2sMr1tbPeBB7dgbx/Rj6+I=; b=PpQysJr3UfhlfG8/PoFpVoWNqOdZpq+eqslUhspPaWdgr+li5AzXV1FXe1fmmNBgwz AclDX0N/iPz4q0+k+zSQ63PuQIBONq6zSN3qfyHhQncfeYjwEpXRYhAoO+BgHdzT/oI+ xk+MB+h3NE+mWSMpkWRsnAjlqEKwhihAnl6PJERaLCNYVbYQfPe/l2auV+VufFNuqHGO FqJCY+RNadEJJU2cilCvG0nTKSCTkBIfmFbVL6plz94u8SZFq+3CsiO5mBwsXyqe4smo Yj3pWoB9ozWNOMnxPeLe0bwVCwPj7drlWEHnpRC6QdkEx2cOrXh4vXSMYXWEBNlUOL44 ITlA== 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=vg7Xo5/UC1VbFfsv57lBg2sMr1tbPeBB7dgbx/Rj6+I=; b=s+sSIjl7JOwGpoLIQwl4r8q3tAQv39zLpTQ69THFkvzEkJVUgg3AwqB6z6yx8luE8J btAXJXH29IaU1FDyd7cpGmt57U+mf+BIhAn6KDHt7G/3Q2WXuLMU6hxSgR7wy24/NtzB +5d1caQ2vlVZ8ZR24jtztzjWrJYWSDP5KwA49lKVikWEOroIsyVe2eL3eE081SHmDIuv u9wjaCrJY1OBp4vYEdvtqhY8Btj+2hHl9cDC+I4aQfyy5novyIiLjwnPY+q9xYm2Gfzy XV1CMOpWfoMiSlG1VSnk23z5aqHpOJtW0SSRGn4ANWxmL5kENsurvLU6ywOKNbwBpQUo VEBA== X-Gm-Message-State: APjAAAUFtEnRWkCvelx8jVbvbFw4d2DyZWgpdwHik6VE4SBXsMcFidqc ESP8FB08Umo3T52T/UBKfkH1MQ== X-Google-Smtp-Source: APXvYqxZ6otB1rSV1A6SDeJeENHh83bcRYL2/YgH/F9f4fetn0N03a1lJhOlijFuMTq/qmkkslfGMQ== X-Received: by 2002:adf:9023:: with SMTP id h32mr60639641wrh.95.1560436663820; Thu, 13 Jun 2019 07:37:43 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Date: Thu, 13 Jun 2019 15:37:41 +0100 Message-Id: <20190613143741.15128-1-peter.maydell@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: 2a00:1450:4864:20::442 Subject: [Qemu-devel] [RISU PATCH] arm.risu: Avoid VTRN with Vd == Vm 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: Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The AArch32 VTRN instruction is specified to give an UNKNOWN result if Vd and Vm are the same register; avoid generating this in risu output, as we already do for VUZP and VZIP. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- Alex: this pattern error is why we don't pass your testcases/aarch32-all/insn_VTRN__INC.risu.bin when compared with a real Cortex-A7. You probably want to update that. arm.risu | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arm.risu b/arm.risu index 9009e6b..c16d245 100644 --- a/arm.risu +++ b/arm.risu @@ -613,7 +613,8 @@ VCLT0 A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 100 q m 0 vm= :4 VABS A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 110 q m 0 vm:4 VNEG A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 111 q m 0 vm:4 VSWP A1 1111 0011 1 d 11 sz:2 10 vd:4 00000 q m 0 vm:4 -VTRN A1 1111 0011 1 d 11 sz:2 10 vd:4 00001 q m 0 vm:4 +# d =3D=3D m gives UNKNOWN results, so avoid it +VTRN A1 1111 0011 1 d 11 sz:2 10 vd:4 00001 q m 0 vm:4 { ($d !=3D $m) || (= $vd !=3D $vm); } # d =3D=3D m gives UNKNOWN results, so avoid it VUZP A1 1111 0011 1 d 11 sz:2 10 vd:4 00010 q m 0 vm:4 { ($d !=3D $m) || (= $vd !=3D $vm); } VZIP A1 1111 0011 1 d 11 sz:2 10 vd:4 00011 q m 0 vm:4 { ($d !=3D $m) || (= $vd !=3D $vm); } --=20 2.20.1