[turbofan] Introduce DeoptimizeIf And DeoptimizeUnless common operators.

src/compiler/instruction.cc

Index: src/compiler/instruction.cc
diff --git a/src/compiler/instruction.cc b/src/compiler/instruction.cc
index d4ec6bc9438318487c3fa0b60aa0bb4d122c003b..436824527cd5f6ca6e7675970ee138220e635206 100644
--- a/src/compiler/instruction.cc
+++ b/src/compiler/instruction.cc
@@ -393,6 +393,8 @@ std::ostream& operator<<(std::ostream& os, const FlagsMode& fm) {
       return os;
     case kFlags_branch:
       return os << "branch";
+    case kFlags_deoptimize:
+      return os << "deoptimize";
     case kFlags_set:
       return os << "set";
   }