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/PHIElimination.h b/lib/CodeGen/PHIElimination.h
index 1bcc9dc..895aaa4 100644
--- a/lib/CodeGen/PHIElimination.h
+++ b/lib/CodeGen/PHIElimination.h
@@ -14,10 +14,11 @@
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
 
 namespace llvm {
-
+  class LiveVariables;
+  
   /// Lower PHI instructions to copies.  
   class PHIElimination : public MachineFunctionPass {
     MachineRegisterInfo  *MRI; // Machine register information
@@ -112,8 +113,7 @@
                                                 MachineBasicBlock::iterator I) {
       // Rather than assuming that EH labels come before other kinds of labels,
       // just skip all labels.
-      while (I != MBB.end() &&
-             (I->getOpcode() == TargetInstrInfo::PHI || I->isLabel()))
+      while (I != MBB.end() && (I->isPHI() || I->isLabel()))
         ++I;
       return I;
     }