- 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.

llvm-svn: 134884

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/Target/CBackend/CBackend.cpp b/llvm/lib/Target/CBackend/CBackend.cpp
index 54072b2f8db..e41e55716cb 100644
--- a/llvm/lib/Target/CBackend/CBackend.cpp
+++ b/llvm/lib/Target/CBackend/CBackend.cpp
@@ -36,6 +36,7 @@
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Target/TargetData.h"
@@ -61,6 +62,10 @@ extern "C" void LLVMInitializeCBackendTarget() {
   RegisterTargetMachine<CTargetMachine> X(TheCBackendTarget);
 }
 
+extern "C" void LLVMInitializeCBackendMCInstrInfo() {
+  RegisterMCInstrInfo<MCInstrInfo> X(TheCBackendTarget);
+}
+
 extern "C" void LLVMInitializeCBackendMCSubtargetInfo() {
   RegisterMCSubtargetInfo<MCSubtargetInfo> X(TheCBackendTarget);
 }