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Wed, 01 Apr 2026 08:27:51 -0700 (PDT) X-Received: by 2002:a05:7301:1015:b0:2c1:558c:16f7 with SMTP id 5a478bee46e88-2c930b7e276mr2008861eec.6.1775057271032; Wed, 01 Apr 2026 08:27:51 -0700 (PDT) From: Brian Cain To: qemu-devel@nongnu.org Cc: brian.cain@oss.qualcomm.com, philmd@linaro.org, ltaylorsimpson@gmail.com, matheus.bernardino@oss.qualcomm.com, marco.liebel@oss.qualcomm.com, quic_mburton@quicinc.com, sid.manning@oss.qualcomm.com, ale@rev.ng, anjo@rev.ng Subject: [PATCH v6 06/37] target/hexagon: Suppress unused-variable warnings for sysemu source regs Date: Wed, 1 Apr 2026 08:26:26 -0700 Message-Id: <20260401152657.314902-7-brian.cain@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260401152657.314902-1-brian.cain@oss.qualcomm.com> References: <20260401152657.314902-1-brian.cain@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: 1eONB03kNZe_xVGNt2iYb15OlaRGmwFg X-Proofpoint-ORIG-GUID: 1eONB03kNZe_xVGNt2iYb15OlaRGmwFg X-Authority-Analysis: v=2.4 cv=B/C0EetM c=1 sm=1 tr=0 ts=69cd399a cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=dvhcR3axvtdXbCCTPW8A:9 a=QEXdDO2ut3YA:10 a=bBxd6f-gb0O0v-kibOvt:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDAxMDE0NCBTYWx0ZWRfXzynxr+xFSSh0 6CTmteENyEP7Hs/CqGfiTXInQTjPkQk81g1GqQEWuZeWfRKVMxvrzaGRCHvi6tzIR2HBLtW0+iF vModmzBMJ1sBBsi8G76tRlDWtNLlHqqVjnckUNKlK7gdnXwAM2eiVAz4PM+0HSbUFpE+S8KnnpX G67AVuaxRwAP0PIZNJx+tHkmUiHqJFORTg8/Vk1bezA8qZs1mZc4WN1kPnIBnsyTG6Stgw2jRlJ XRD6pVxCE4gW5C6Ws75aAbMTGXhmqK6ywkg5ZN336ag/fhSStpJxen0lSiAlADGuBPskfV1tpla Ac7nuiPA+e0szfJqeoJ5oEjuWk9LRN5QZMP3O4PgIXBK4ek+fy2IPPCknQiSwKhsTah3ugSKIKb GUPiHOUmSaGjtDtvoOPmQJK1kMUWyoZ+7iSbrg2gk/5w9ahWfk0PUL7JoAJhsooAxlw9/p7ODVR tzAq3zOpq1e9Ap1FLZQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-01_04,2026-04-01_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 bulkscore=0 phishscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604010144 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=brian.cain@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -7 X-Spam_score: -0.8 X-Spam_bar: / X-Spam_report: (-0.8 / 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @qualcomm.com) X-ZM-MESSAGEID: 1775057612646158500 The analyze_read() methods on GuestSource, GuestPairSource, SystemSource, and SystemPairSource were no-ops because these source registers do not need read-tracking in the analyze phase. However, gen_analyze_funcs.py unconditionally declares the register-number variable (e.g. GsN) via decl_reg_num() for all registers that are read or written. When building with hexagon-softmmu, the generated analyze function bodies are compiled (outside the #ifndef CONFIG_USER_ONLY guard), and the declared-but-unreferenced register-number variable triggers -Werror=3Dunused-variable under both gcc and clang. Override decl_reg_num() in each class to declare the register number with G_GNUC_UNUSED, suppressing the warning. Reviewed-by: Taylor Simpson Signed-off-by: Brian Cain --- target/hexagon/hex_common.py | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py index ceb4b6812d6..1daf7239fc4 100755 --- a/target/hexagon/hex_common.py +++ b/target/hexagon/hex_common.py @@ -1068,6 +1068,10 @@ def analyze_write(self, f, tag, regno): """)) =20 class GuestSource(GuestRegister, Single, OldSource): + def decl_reg_num(self, f, regno): + f.write(code_fmt(f"""\ + const int {self.reg_num} G_GNUC_UNUSED =3D insn->regno[{regno}= ]; + """)) def decl_tcg(self, f, tag, regno): self.decl_reg_num(f, regno) f.write(code_fmt(f"""\ @@ -1093,6 +1097,10 @@ def analyze_write(self, f, tag, regno): """)) =20 class GuestPairSource(GuestRegister, Pair, OldSource): + def decl_reg_num(self, f, regno): + f.write(code_fmt(f"""\ + const int {self.reg_num} G_GNUC_UNUSED =3D insn->regno[{regno}= ]; + """)) def decl_tcg(self, f, tag, regno): self.decl_reg_num(f, regno) f.write(code_fmt(f"""\ @@ -1118,6 +1126,10 @@ def analyze_write(self, f, tag, regno): """)) =20 class SystemSource(Register, Single, OldSource): + def decl_reg_num(self, f, regno): + f.write(code_fmt(f"""\ + const int {self.reg_num} G_GNUC_UNUSED =3D insn->regno[{regno}= ]; + """)) def decl_tcg(self, f, tag, regno): self.decl_reg_num(f, regno) f.write(code_fmt(f"""\ @@ -1143,6 +1155,10 @@ def analyze_write(self, f, tag, regno): """)) =20 class SystemPairSource(Register, Pair, OldSource): + def decl_reg_num(self, f, regno): + f.write(code_fmt(f"""\ + const int {self.reg_num} G_GNUC_UNUSED =3D insn->regno[{regno}= ]; + """)) def decl_tcg(self, f, tag, regno): self.decl_reg_num(f, regno) f.write(code_fmt(f"""\ --=20 2.34.1