Unbreak JIT. Ignore TargetInstrInfo::IMPLICIT_DEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48447 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index 87481c7..e6cd412 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -621,6 +621,7 @@
     case TargetInstrInfo::LABEL:
       MCE.emitLabel(MI.getOperand(0).getImm());
       break;
+    case TargetInstrInfo::IMPLICIT_DEF:
     case TargetInstrInfo::DECLARE:
     case X86::DWARF_LOC:
     case X86::FP_REG_KILL: