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[92.88.170.44]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c249685ef7bsm1320196666b.52.2026.08.24.02.30.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Aug 2026 02:30:48 -0700 (PDT) Message-ID: Date: Mon, 24 Aug 2026 11:30:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PULL 09/38] tcg: Simplify bswap/hswap expansion using bitswap To: Peter Maydell , Richard Henderson Cc: qemu-devel@nongnu.org References: <20260818170155.1907006-1-richard.henderson@linaro.org> <20260818170155.1907006-10-richard.henderson@linaro.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: 7dqrNIWwaJfLVujEEDCeyiV2TMknN5dh X-Proofpoint-GUID: 7dqrNIWwaJfLVujEEDCeyiV2TMknN5dh X-Proofpoint-Spam-Info: AW1haW4tMjYwODI0MDA4MiBTYWx0ZWRfX9f1jhzET/Fmu ydw40HSleuPpdnGYPrsJFUDmFEPxFBSZegqX/aVLhyIOejWWn+3bEhEmfcpdDdqP1XSfkwmn88Z cXGSK15r6QCqnBCKqGwKxL+eEg5oBX0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI0MDA4MiBTYWx0ZWRfX3rT894Ib4WeO gjMICU6gDZIfy9YfkpoluiW+JLKwaJrKr8Hf3iM1wKli1zf80ZxnFjntGGObHRIRlW2vKzM8Oum JEkUuhypCgUoyXjpA3Iw7BDhbhDvjgYMHvpGwIjdLH0AnJ8jTrF1DfoKSwAiObvCMG5XZE/9sup 6mMV3/jtN1cfOM2PmpWStgE6UFRvm4QDWf6Kl+qHqvo5wzslx/fyD228xwC3cu+Mp/9Xj+69xYe YjldeNbfRXsMpTZliPI6j6esvvmEUoqrNT/esN39DpkB78HraDlpc8npzFgJOuQReO4a4b7lvZL wwj2WF6KFkod2hbUIPh2JbVIm4allSbrOH0Elb61R5ozNyy6+jql/ubKhgDB/OQRejENtZmoVy0 jA4726mZFFofZ8ET1NsRXOa2wCHVY0SA9aH+a8cUidCb9SpbExPuYHJ02nHe8Oe4BOXWcyZb1SY cALwzAJRN1pNrtzGVwQ== X-Authority-Analysis: v=2.4 cv=KcvidwYD c=1 sm=1 tr=0 ts=6a8c0f4a cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=s1NLoHz9uzatdv2VNqxUSg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=M51BFTxLslgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=p0WdMEafAAAA:8 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=YelGcSiot1SMLvslgbIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-24_03,2026-08-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 adultscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 clxscore=1015 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608240082 Received-SPF: pass client-ip=205.220.168.131; envelope-from=philmd@oss.qualcomm.com; helo=mx0a-0031df01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 24/8/26 11:05, Peter Maydell wrote: > On Tue, 18 Aug 2026 at 18:07, Richard Henderson > wrote: >> >> Reviewed-by: Philippe Mathieu-Daudé >> Signed-off-by: Richard Henderson > > Hi -- this commit is reported to cause a regression where an > aarch64 rev64 can now trigger a TCG assertion: > https://gitlab.com/qemu-project/qemu/-/work_items/4229 > > Could you have a look at that, please? If so I'd expect the culprit to be either the previous one, "tcg: Add tcg_gen_revbit{8,32,64}" or later "tcg/aarch64: Implement revbit{32,64}". Richard you'll likely beat me at finding the issue, otherwise I can have a look in 3 days.