[AMDGPU] Fix a warning

kazutakahirata · kazutakahirata · commit 83f390859e18 · 2025-09-02T09:25:16.000-07:00
This patch fixes:

  llvm/lib/Target/AMDGPU/GCNDPPCombine.cpp:298:9: error: unused
  variable 'Src0Idx' [-Werror,-Wunused-variable]
diff --git a/llvm/lib/Target/AMDGPU/GCNDPPCombine.cpp b/llvm/lib/Target/AMDGPU/GCNDPPCombine.cpp
@@ -295,7 +295,7 @@ MachineInstr *GCNDPPCombine::createDPPInst(MachineInstr &OrigMI,
     }
     auto *Src0 = TII->getNamedOperand(MovMI, AMDGPU::OpName::src0);
     assert(Src0);
-    int Src0Idx = NumOperands;
+    [[maybe_unused]] int Src0Idx = NumOperands;
 
     DPPInst.add(*Src0);
     DPPInst->getOperand(NumOperands).setIsKill(false);

Original file line number	Diff line number	Diff line change
`@@ -295,7 +295,7 @@ MachineInstr *GCNDPPCombine::createDPPInst(MachineInstr &OrigMI,`
`295`	`295`	`}`
`296`	`296`	`auto *Src0 = TII->getNamedOperand(MovMI, AMDGPU::OpName::src0);`
`297`	`297`	`assert(Src0);`
`298`		`- int Src0Idx = NumOperands;`
	`298`	`+ [[maybe_unused]] int Src0Idx = NumOperands;`
`299`	`299`
`300`	`300`	`DPPInst.add(*Src0);`
`301`	`301`	`DPPInst->getOperand(NumOperands).setIsKill(false);`