[llvm] [AMDGPU] Fix VOP3P NEG fold to check the use opcode, not the def (PR #219728)

[Arseniy Obolenskiy via llvm-commits]

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@@ -5283,16 +5300,19 @@ static bool isValidToPack(SrcStatus HiStat, SrcStatus LoStat, Register NewReg,
          IsHalfState(HiStat);
 }
 
-std::pair<Register, unsigned> AMDGPUInstructionSelector::selectVOP3PModsImpl(
-    Register RootReg, const MachineRegisterInfo &MRI, bool IsDOT) const {
+std::pair<Register, unsigned>
+AMDGPUInstructionSelector::selectVOP3PModsImpl(const MachineOperand &Root,
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aobolensk wrote:

Fixed

https://github.com/llvm/llvm-project/pull/219728