move target-independent opcodes out of TargetInstrInfo

into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95687 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Alpha/AlphaCodeEmitter.cpp

@@ -95,8 +95,8 @@ void AlphaCodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) {
     case Alpha::ALTENT:
     case Alpha::PCLABEL:
     case Alpha::MEMLABEL:
-    case TargetInstrInfo::IMPLICIT_DEF:
-    case TargetInstrInfo::KILL:
+    case TargetOpcode::IMPLICIT_DEF:
+    case TargetOpcode::KILL:
       break; //skip these
     }
     MCE.processDebugLoc(MI.getDebugLoc(), false);