[NFC][AMDGPU] Make method declarations in SIInstrInfo equivalent to their definitions.

[tsymalla]

Summary

Some functions from SIInstrInfo have their operands named different in
their declarations vs. their defs. This was caught by cppcheck.

[tsymalla]

clang-format

llvm/lib/Target/AMDGPU/SIInstrInfo.h

public:
   const GCNSubtarget &getSubtarget() const {
     return ST;
   }
 
   bool isReallyTriviallyReMaterializable(const MachineInstr &MI) const override;
 
   bool isIgnorableUse(const MachineOperand &MO) const override;
 
-  bool areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
-                               int64_t &Offset1,
-                               int64_t &Offset2) const override;
+  bool areLoadsFromSameBasePtr(SDNode *Load0, SDNode *Load1, int64_t &Offset0,
+                               int64_t &Offset1) const override;
 
   bool getMemOperandsWithOffsetWidth(
       const MachineInstr &LdSt,
       SmallVectorImpl<const MachineOperand *> &BaseOps, int64_t &Offset,
       bool &OffsetIsScalable, unsigned &Width,
       const TargetRegisterInfo *TRI) const final;
 
   bool shouldClusterMemOps(ArrayRef<const MachineOperand *> BaseOps1,
public:
   LLVM_READONLY
   int commuteOpcode(unsigned Opc) const;
 
   LLVM_READONLY
   inline int commuteOpcode(const MachineInstr &MI) const {
     return commuteOpcode(MI.getOpcode());
   }
 
-  bool findCommutedOpIndices(const MachineInstr &MI, unsigned &SrcOpIdx1,
-                             unsigned &SrcOpIdx2) const override;
+  bool findCommutedOpIndices(const MachineInstr &MI, unsigned &SrcOpIdx0,
+                             unsigned &SrcOpIdx1) const override;
 
-  bool findCommutedOpIndices(MCInstrDesc Desc, unsigned & SrcOpIdx0,
-   unsigned & SrcOpIdx1) const;
+  bool findCommutedOpIndices(MCInstrDesc Desc, unsigned &SrcOpIdx0,
+                             unsigned &SrcOpIdx1) const;
 
   bool isBranchOffsetInRange(unsigned BranchOpc,
                              int64_t BrOffset) const override;
 
   MachineBasicBlock *getBranchDestBlock(const MachineInstr &MI) const override;
 
   /// Return whether the block terminate with divergent branch.
   /// Note this only work before lowering the pseudo control flow instructions.