Make ConstantFP legalize into TargetConstantFP like other leaf nodes do. Allow

targets to register custom legalizers for ConstantFP in case there isn't a
fixed list of constants that can be generated.  On some architectures (ia64?)
all fp immediates are legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25769 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/LiveIntervalAnalysis.h

@@ -148,7 +148,9 @@ namespace llvm {
     /// handleVirtualRegisterDef)
     void handleRegisterDef(MachineBasicBlock* mbb,
                            MachineBasicBlock::iterator mi,
-                           unsigned reg);
+                           unsigned reg,
+                           std::map<std::pair<unsigned,unsigned>, 
+                                    unsigned> &PhysRegValueMap);
 
     /// handleVirtualRegisterDef - update intervals for a virtual
     /// register def
@@ -165,6 +167,8 @@ namespace llvm {
                                    MachineBasicBlock::iterator mi,
                                    LiveInterval& interval,
                                    unsigned SrcReg, unsigned DestReg,
+                                   std::map<std::pair<unsigned,unsigned>, 
+                                            unsigned> *PhysRegValueMap,
                                    bool isLiveIn = false);
 
     /// Return true if the two specified registers belong to different