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[176.171.221.76]) by smtp.gmail.com with ESMTPSA id mb8-20020a170906eb0800b00992b71d8f19sm5068173ejb.133.2023.09.11.03.11.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Sep 2023 03:11:36 -0700 (PDT) Message-ID: Date: Mon, 11 Sep 2023 12:11:35 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.15.0 Subject: Re: [PULL 00/51] Build system, i386 changes for 2023-09-07 Content-Language: en-US To: Paolo Bonzini , Kevin Wolf Cc: Stefan Hajnoczi , qemu-devel@nongnu.org References: <20230907130004.500601-1-pbonzini@redhat.com> <20230907154412.GA1550739@fedora> <521ab2c6-f617-1a9e-fef6-29add2e62137@linaro.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::22f; envelope-from=philmd@linaro.org; helo=mail-lj1-x22f.google.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 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, NICE_REPLY_A=-1.473, RCVD_IN_DNSWL_NONE=-0.0001, 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: 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 8/9/23 21:21, Paolo Bonzini wrote: > On Fri, Sep 8, 2023 at 7:28 PM Kevin Wolf wrote: >> Maybe the calls aren't eliminated because --enable-debug implies -O0? > > My experience is that it will still fold simple dead code like "0 && > foo()" or even "if (0) { ... }", but maybe it's a GCC vs. clang > difference. Philippe, I take it that you are looking at it? Yes, I'll send a patch soon. Sorry I didn't catch that case.