Rename SSARegMap -> MachineRegisterInfo in keeping with the idea 
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 52d185b..13d3f97 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -26,14 +26,14 @@
 #include "llvm/Intrinsics.h"
 #include "llvm/IntrinsicInst.h"
 #include "llvm/ParameterAttributes.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineJumpTableInfo.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/SchedulerRegistry.h"
 #include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/CodeGen/SSARegMap.h"
 #include "llvm/Target/MRegisterInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetFrameInfo.h"
@@ -166,7 +166,7 @@
     TargetLowering &TLI;
     Function &Fn;
     MachineFunction &MF;
-    SSARegMap *RegMap;
+    MachineRegisterInfo &RegInfo;
 
     FunctionLoweringInfo(TargetLowering &TLI, Function &Fn,MachineFunction &MF);
 
@@ -189,7 +189,7 @@
 #endif
 
     unsigned MakeReg(MVT::ValueType VT) {
-      return RegMap->createVirtualRegister(TLI.getRegClassFor(VT));
+      return RegInfo.createVirtualRegister(TLI.getRegClassFor(VT));
     }
     
     /// isExportedInst - Return true if the specified value is an instruction
@@ -244,7 +244,7 @@
 
 FunctionLoweringInfo::FunctionLoweringInfo(TargetLowering &tli,
                                            Function &fn, MachineFunction &mf)
-    : TLI(tli), Fn(fn), MF(mf), RegMap(MF.getSSARegMap()) {
+    : TLI(tli), Fn(fn), MF(mf), RegInfo(MF.getRegInfo()) {
 
   // Create a vreg for each argument register that is not dead and is used
   // outside of the entry block for the function.
@@ -3348,9 +3348,9 @@
         ValueVT = RegVT;
 
       // Create the appropriate number of virtual registers.
-      SSARegMap *RegMap = MF.getSSARegMap();
+      MachineRegisterInfo &RegInfo = MF.getRegInfo();
       for (; NumRegs; --NumRegs)
-        Regs.push_back(RegMap->createVirtualRegister(PhysReg.second));
+        Regs.push_back(RegInfo.createVirtualRegister(PhysReg.second));
       
       OpInfo.AssignedRegs = RegsForValue(Regs, RegVT, ValueVT);
       OpInfo.MarkAllocatedRegs(isOutReg, isInReg, OutputRegs, InputRegs);
@@ -4363,7 +4363,7 @@
 //===----------------------------------------------------------------------===//
 
 unsigned SelectionDAGISel::MakeReg(MVT::ValueType VT) {
-  return RegMap->createVirtualRegister(TLI.getRegClassFor(VT));
+  return RegInfo->createVirtualRegister(TLI.getRegClassFor(VT));
 }
 
 void SelectionDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
@@ -4378,7 +4378,7 @@
   AA = &getAnalysis<AliasAnalysis>();
 
   MachineFunction &MF = MachineFunction::construct(&Fn, TLI.getTargetMachine());
-  RegMap = MF.getSSARegMap();
+  RegInfo = &MF.getRegInfo();
   DOUT << "\n\n\n=== " << Fn.getName() << "\n";
 
   FunctionLoweringInfo FuncInfo(TLI, Fn, MF);
@@ -4395,9 +4395,9 @@
   // Add function live-ins to entry block live-in set.
   BasicBlock *EntryBB = &Fn.getEntryBlock();
   BB = FuncInfo.MBBMap[EntryBB];
-  if (!MF.livein_empty())
-    for (MachineFunction::livein_iterator I = MF.livein_begin(),
-           E = MF.livein_end(); I != E; ++I)
+  if (!RegInfo->livein_empty())
+    for (MachineRegisterInfo::livein_iterator I = RegInfo->livein_begin(),
+           E = RegInfo->livein_end(); I != E; ++I)
       BB->addLiveIn(I->first);
 
 #ifndef NDEBUG