Replaced unary negation by multiplication with -1.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 3bcfc3b13cd503a8132b8a4297be393573f1310b..dd347928d7416b6296afcba1a6198b40d7ae15da 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -4349,10 +4349,6 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       break;
     }
 
-    case Token::SUB:
-      EmitUnaryOperation(expr, "[ UnaryOperation (SUB)");
-      break;
-
     case Token::BIT_NOT:
       EmitUnaryOperation(expr, "[ UnaryOperation (BIT_NOT)");
       break;
@@ -4365,6 +4361,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
 
 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());