MIPS: Make invalid LHSs that are calls late errors.

Port r20428 (7a071766)

Original commit message:
Necessary for web legacy compatibility.

Also fold in additional strict mode checks into LHS checks.
Minor constness clean-ups on the way.

BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/222893002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/full-codegen-mips.cc

@@ -1906,7 +1906,7 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
 
 
 void FullCodeGenerator::VisitAssignment(Assignment* expr) {
-  ASSERT(expr->target()->IsValidLeftHandSide());
+  ASSERT(expr->target()->IsValidReferenceExpression());
 
   Comment cmnt(masm_, "[ Assignment");
 
@@ -2446,7 +2446,7 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
 
 
 void FullCodeGenerator::EmitAssignment(Expression* expr) {
-  ASSERT(expr->IsValidLeftHandSide());
+  ASSERT(expr->IsValidReferenceExpression());
 
   // Left-hand side can only be a property, a global or a (parameter or local)
   // slot.
@@ -4342,7 +4342,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
 
 
 void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
-  ASSERT(expr->expression()->IsValidLeftHandSide());
+  ASSERT(expr->expression()->IsValidReferenceExpression());
 
   Comment cmnt(masm_, "[ CountOperation");
   SetSourcePosition(expr->position());