- Eliminate MCCodeEmitter's dependency on TargetMachine. It now uses MCInstrInfo

and MCSubtargetInfo.
- Added methods to update subtarget features (used when targets automatically
  detect subtarget features or switch modes).
- Teach X86Subtarget to update MCSubtargetInfo features bits since the
  MCSubtargetInfo layer can be shared with other modules.
- These fixes .code 16 / .code 32 support since mode switch is updated in
  MCSubtargetInfo so MC code emitter can do the right thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134884 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/SystemZ/SystemZInstrInfo.cpp

@@ -21,6 +21,7 @@
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/Target/TargetRegistry.h"
 #include "llvm/Support/ErrorHandling.h"
 
 #define GET_INSTRINFO_CTOR
@@ -437,3 +438,14 @@ SystemZInstrInfo::getLongDispOpc(unsigned Opc) const {
   case SystemZ::MOV64Prm:  return get(SystemZ::MOV64Prmy);
   }
 }
+
+MCInstrInfo *createSystemZMCInstrInfo() {
+  MCInstrInfo *X = new MCInstrInfo();
+  InitSystemZMCInstrInfo(X);
+  return X;
+}
+
+extern "C" void LLVMInitializeSystemZMCInstrInfo() {
+  TargetRegistry::RegisterMCInstrInfo(TheSystemZTarget,
+                                      createSystemZMCInstrInfo);
+}