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/Alpha/AlphaCodeEmitter.cpp b/lib/Target/Alpha/AlphaCodeEmitter.cpp
index 0ae99a9..51a1404 100644
--- a/lib/Target/Alpha/AlphaCodeEmitter.cpp
+++ b/lib/Target/Alpha/AlphaCodeEmitter.cpp
@@ -95,6 +95,7 @@
     case Alpha::ALTENT:
     case Alpha::PCLABEL:
     case Alpha::MEMLABEL:
+    case TargetInstrInfo::IMPLICIT_DEF:
       break; //skip these
     }
   }
diff --git a/lib/Target/PowerPC/PPCCodeEmitter.cpp b/lib/Target/PowerPC/PPCCodeEmitter.cpp
index d2bbebb..50c9664 100644
--- a/lib/Target/PowerPC/PPCCodeEmitter.cpp
+++ b/lib/Target/PowerPC/PPCCodeEmitter.cpp
@@ -112,6 +112,8 @@
     case TargetInstrInfo::LABEL:
       MCE.emitLabel(MI.getOperand(0).getImm());
       break;
+    case TargetInstrInfo::IMPLICIT_DEF:
+      break; // pseudo opcode, no side effects
     case PPC::MovePCtoLR:
     case PPC::MovePCtoLR8:
       assert(TM.getRelocationModel() == Reloc::PIC_);
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: