[mips] Removed IsSoftFloat from MipsISelLowering::analyzeCallOperands(). NFC

[dsanders]

Summary

It isn't used anymore.

Depends on D6081

[vmedic]

LGTM

lib/Target/Mips/MipsISelLowering.h

public:
       enum SpecialCallingConvType {
         Mips16RetHelperConv, NoSpecialCallingConv
       };
 
       MipsCC(CallingConv::ID CallConv, const MipsSubtarget &Subtarget,
              CCState &Info);
 
       void analyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
-                               bool IsVarArg, bool IsSoftFloat,
-                               const SDNode *CallNode,
+                               bool IsVarArg, const SDNode *CallNode,
                                std::vector<ArgListEntry> &FuncArgs,
                                CCState &State);
 
       /// reservedArgArea - The size of the area the caller reserves for
       /// register arguments. This is 16-byte if ABI is O32.
       unsigned reservedArgArea() const;
 
       /// Return pointer to array of integer argument registers.

lib/Target/Mips/MipsISelLowering.cpp

MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
 
   // Analyze operands of the call, assigning locations to each operand.
   SmallVector<CCValAssign, 16> ArgLocs;
   MipsCCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(), ArgLocs,
                      *DAG.getContext());
   MipsCC MipsCCInfo(CallConv, Subtarget, CCInfo);
 
   CCInfo.PreAnalyzeCallOperandsForF128_(Outs, CLI.getArgs(), Callee.getNode());
-  MipsCCInfo.analyzeCallOperands(Outs, IsVarArg, Subtarget.abiUsesSoftFloat(),
-                                 Callee.getNode(), CLI.getArgs(), CCInfo);
+  MipsCCInfo.analyzeCallOperands(Outs, IsVarArg, Callee.getNode(),
+                                 CLI.getArgs(), CCInfo);
   CCInfo.ClearOriginalArgWasF128();
 
   // Get a count of how many bytes are to be pushed on the stack.
   unsigned NextStackOffset = CCInfo.getNextStackOffset();
 
   // Check if it's really possible to do a tail call.
   if (IsTailCall)
     IsTailCall = isEligibleForTailCallOptimization(
MipsTargetLowering::MipsCC::MipsCC(CallingConv::ID CC,
                                    CCState &Info)
     : CallConv(CC), Subtarget(Subtarget_) {
   // Pre-allocate reserved argument area.
   Info.AllocateStack(reservedArgArea(), 1);
 }
 
 void MipsTargetLowering::MipsCC::analyzeCallOperands(
     const SmallVectorImpl<ISD::OutputArg> &Args, bool IsVarArg,
-    bool IsSoftFloat, const SDNode *CallNode,
-    std::vector<ArgListEntry> &FuncArgs, CCState &State) {
+    const SDNode *CallNode, std::vector<ArgListEntry> &FuncArgs,
+    CCState &State) {
   MipsCC::SpecialCallingConvType SpecialCallingConv =
       getSpecialCallingConv(CallNode);
   assert((CallConv != CallingConv::Fast || !IsVarArg) &&
          "CallingConv::Fast shouldn't be used for vararg functions.");
 
   unsigned NumOpnds = Args.size();
   llvm::CCAssignFn *FixedFn = CC_Mips_FixedArg;
   if (CallConv != CallingConv::Fast &&