Change target-specific classes to use more precise static types.
This eliminates the need for several awkward casts, including
the last dynamic_cast under lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCTargetMachine.h b/lib/Target/PowerPC/PPCTargetMachine.h
index ed87809..ac2c2aa 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/lib/Target/PowerPC/PPCTargetMachine.h
@@ -46,12 +46,12 @@
   PPCTargetMachine(const Module &M, const std::string &FS, bool is64Bit);
 
   virtual const PPCInstrInfo     *getInstrInfo() const { return &InstrInfo; }
-  virtual const TargetFrameInfo  *getFrameInfo() const { return &FrameInfo; }
-  virtual       TargetJITInfo    *getJITInfo()         { return &JITInfo; }
+  virtual const PPCFrameInfo     *getFrameInfo() const { return &FrameInfo; }
+  virtual       PPCJITInfo       *getJITInfo()         { return &JITInfo; }
   virtual       PPCTargetLowering *getTargetLowering() const { 
    return const_cast<PPCTargetLowering*>(&TLInfo); 
   }
-  virtual const TargetRegisterInfo    *getRegisterInfo() const {
+  virtual const PPCRegisterInfo  *getRegisterInfo() const {
     return &InstrInfo.getRegisterInfo();
   }