Turn SelectionDAGBuilder::GetRegistersForValue into a local function.

It couldn't be used outside of the file because SDISelAsmOperandInfo
is local to SelectionDAGBuilder.cpp. Making it a static function avoids
a weird linkage dance.

llvm-svn: 128342

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -50,7 +50,6 @@
 #include "llvm/Target/TargetIntrinsicInfo.h"
 #include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetOptions.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -5202,12 +5201,11 @@ void SelectionDAGBuilder::visitCall(const CallInst &I) {
   LowerCallTo(&I, Callee, I.isTailCall());
 }
 
-namespace llvm {
+namespace {
 
 /// AsmOperandInfo - This contains information for each constraint that we are
 /// lowering.
-class LLVM_LIBRARY_VISIBILITY SDISelAsmOperandInfo :
-    public TargetLowering::AsmOperandInfo {
+class SDISelAsmOperandInfo : public TargetLowering::AsmOperandInfo {
 public:
   /// CallOperand - If this is the result output operand or a clobber
   /// this is null, otherwise it is the incoming operand to the CallInst.
@@ -5295,7 +5293,7 @@ private:
 
 typedef SmallVector<SDISelAsmOperandInfo,16> SDISelAsmOperandInfoVector;
 
-} // end llvm namespace.
+} // end anonymous namespace
 
 /// isAllocatableRegister - If the specified register is safe to allocate,
 /// i.e. it isn't a stack pointer or some other special register, return the
@@ -5354,11 +5352,13 @@ isAllocatableRegister(unsigned Reg, MachineFunction &MF,
 ///   OpInfo describes the operand.
 ///   Input and OutputRegs are the set of already allocated physical registers.
 ///
-void SelectionDAGBuilder::
-GetRegistersForValue(SDISelAsmOperandInfo &OpInfo,
-                     std::set<unsigned> &OutputRegs,
-                     std::set<unsigned> &InputRegs) {
-  LLVMContext &Context = FuncInfo.Fn->getContext();
+static void GetRegistersForValue(SelectionDAG &DAG,
+                                 const TargetLowering &TLI,
+                                 DebugLoc DL,
+                                 SDISelAsmOperandInfo &OpInfo,
+                                 std::set<unsigned> &OutputRegs,
+                                 std::set<unsigned> &InputRegs) {
+  LLVMContext &Context = *DAG.getContext();
 
   // Compute whether this value requires an input register, an output register,
   // or both.
@@ -5404,7 +5404,7 @@ GetRegistersForValue(SDISelAsmOperandInfo &OpInfo,
       // vector types).
       EVT RegVT = *PhysReg.second->vt_begin();
       if (RegVT.getSizeInBits() == OpInfo.ConstraintVT.getSizeInBits()) {
-        OpInfo.CallOperand = DAG.getNode(ISD::BITCAST, getCurDebugLoc(),
+        OpInfo.CallOperand = DAG.getNode(ISD::BITCAST, DL,
                                          RegVT, OpInfo.CallOperand);
         OpInfo.ConstraintVT = RegVT;
       } else if (RegVT.isInteger() && OpInfo.ConstraintVT.isFloatingPoint()) {
@@ -5414,7 +5414,7 @@ GetRegistersForValue(SDISelAsmOperandInfo &OpInfo,
         // machine.
         RegVT = EVT::getIntegerVT(Context,
                                   OpInfo.ConstraintVT.getSizeInBits());
-        OpInfo.CallOperand = DAG.getNode(ISD::BITCAST, getCurDebugLoc(),
+        OpInfo.CallOperand = DAG.getNode(ISD::BITCAST, DL,
                                          RegVT, OpInfo.CallOperand);
         OpInfo.ConstraintVT = RegVT;
       }
@@ -5685,7 +5685,8 @@ void SelectionDAGBuilder::visitInlineAsm(ImmutableCallSite CS) {
     // If this constraint is for a specific register, allocate it before
     // anything else.
     if (OpInfo.ConstraintType == TargetLowering::C_Register)
-      GetRegistersForValue(OpInfo, OutputRegs, InputRegs);
+      GetRegistersForValue(DAG, TLI, getCurDebugLoc(), OpInfo, OutputRegs,
+                           InputRegs);
   }
 
   // Second pass - Loop over all of the operands, assigning virtual or physregs
@@ -5696,7 +5697,8 @@ void SelectionDAGBuilder::visitInlineAsm(ImmutableCallSite CS) {
     // C_Register operands have already been allocated, Other/Memory don't need
     // to be.
     if (OpInfo.ConstraintType == TargetLowering::C_RegisterClass)
-      GetRegistersForValue(OpInfo, OutputRegs, InputRegs);
+      GetRegistersForValue(DAG, TLI, getCurDebugLoc(), OpInfo, OutputRegs,
+                           InputRegs);
   }
 
   // AsmNodeOperands - The operands for the ISD::INLINEASM node.

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h

@@ -60,7 +60,6 @@ class MDNode;
 class PHINode;
 class PtrToIntInst;
 class ReturnInst;
-class SDISelAsmOperandInfo;
 class SDDbgValue;
 class SExtInst;
 class SelectInst;
@@ -381,10 +380,6 @@ public:
     N = NewN;
   }
 
-  void GetRegistersForValue(SDISelAsmOperandInfo &OpInfo,
-                            std::set<unsigned> &OutputRegs, 
-                            std::set<unsigned> &InputRegs);
-
   void FindMergedConditions(const Value *Cond, MachineBasicBlock *TBB,
                             MachineBasicBlock *FBB, MachineBasicBlock *CurBB,
                             MachineBasicBlock *SwitchBB, unsigned Opc);