Desugar bitwise negation into XOR and kill all UnaryOp stuff.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 0a26dbe431cafd0db210a40d9d6c454d8ceea196..b60502c9a5bffa8bdb23daa3ea27fe425b5ab123 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -4382,32 +4382,12 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       break;
     }
 
-    case Token::BIT_NOT:
-      EmitUnaryOperation(expr, "[ UnaryOperation (BIT_NOT)");
-      break;
-
     default:
       UNREACHABLE();
   }
 }
 
 
-void FullCodeGenerator::EmitUnaryOperation(UnaryOperation* expr,
-                                           const char* comment) {
-  ASSERT_EQ(Token::BIT_NOT, expr->op());
-  // TODO(svenpanne): Allowing format strings in Comment would be nice here...
-  Comment cmt(masm_, comment);
-  UnaryOpStub stub(expr->op());
-  // GenericUnaryOpStub expects the argument to be in a0.
-  VisitForAccumulatorValue(expr->expression());
-  SetSourcePosition(expr->position());
-  __ mov(a0, result_register());
-  CallIC(stub.GetCode(isolate()), RelocInfo::CODE_TARGET,
-         expr->UnaryOperationFeedbackId());
-  context()->Plug(v0);
-}
-
-
 void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   Comment cmnt(masm_, "[ CountOperation");
   SetSourcePosition(expr->position());