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
diff --git a/lib/CodeGen/OptimizeExts.cpp b/lib/CodeGen/OptimizeExts.cpp
index 096f9d4..acb6869 100644
--- a/lib/CodeGen/OptimizeExts.cpp
+++ b/lib/CodeGen/OptimizeExts.cpp
@@ -110,7 +110,7 @@
       MachineInstr *UseMI = &*UI;
       if (UseMI == MI)
         continue;
-      if (UseMI->getOpcode() == TargetInstrInfo::PHI) {
+      if (UseMI->isPHI()) {
         ExtendLife = false;
         continue;
       }
@@ -150,7 +150,7 @@
       UI = MRI->use_begin(DstReg);
       for (MachineRegisterInfo::use_iterator UE = MRI->use_end(); UI != UE;
            ++UI)
-        if (UI->getOpcode() == TargetInstrInfo::PHI)
+        if (UI->isPHI())
           PHIBBs.insert(UI->getParent());
 
       const TargetRegisterClass *RC = MRI->getRegClass(SrcReg);
@@ -162,7 +162,7 @@
           continue;
         unsigned NewVR = MRI->createVirtualRegister(RC);
         BuildMI(*UseMBB, UseMI, UseMI->getDebugLoc(),
-                TII->get(TargetInstrInfo::EXTRACT_SUBREG), NewVR)
+                TII->get(TargetOpcode::EXTRACT_SUBREG), NewVR)
           .addReg(DstReg).addImm(SubIdx);
         UseMO->setReg(NewVR);
         ++NumReuse;