Subzero: Fix Calling Convention for MIPS O32 abi

src/IceTargetLoweringMIPS32.h

 //===- subzero/src/IceTargetLoweringMIPS32.h - MIPS32 lowering ---*- C++-*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 478 matching lines @@
     bool argInReg(Type Ty, uint32_t ArgNo, RegNumT *Reg);
 
   private:
     // argInGPR is used to find if any GPR register is available for argument of
     // type Ty
     bool argInGPR(Type Ty, RegNumT *Reg);
     /// argInVFP is to floating-point/vector types what argInGPR is for integer
     /// types.
     bool argInVFP(Type Ty, RegNumT *Reg);
     inline void discardNextGPRAndItsAliases(CfgVector<RegNumT> *Regs);
+    inline void alignGPR(CfgVector<RegNumT> *Regs);
     void discardUnavailableGPRsAndTheirAliases(CfgVector<RegNumT> *Regs);
     SmallBitVector GPRegsUsed;
     CfgVector<RegNumT> GPRArgs;
     CfgVector<RegNumT> I64Args;
 
     void discardUnavailableVFPRegsAndTheirAliases(CfgVector<RegNumT> *Regs);
     SmallBitVector VFPRegsUsed;
     CfgVector<RegNumT> FP32Args;
     CfgVector<RegNumT> FP64Args;
     // UseFPRegs is a flag indicating if FP registers can be used
@@ skipping 167 matching lines @@
   explicit TargetHeaderMIPS32(GlobalContext *Ctx);
 
 private:
   ~TargetHeaderMIPS32() = default;
 };
 
 } // end of namespace MIPS32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGMIPS32_H