PPC/s390: Remove CONST_LEGACY VariableMode

src/full-codegen/s390/full-codegen-s390.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/full-codegen/full-codegen.h"
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 2111 matching lines @@
     if (var->binding_needs_init()) {
       Label assign;
       __ LoadP(r5, location);
       __ CompareRoot(r5, Heap::kTheHoleValueRootIndex);
       __ bne(&assign);
       __ mov(r5, Operand(var->name()));
       __ push(r5);
       __ CallRuntime(Runtime::kThrowReferenceError);
       __ bind(&assign);
     }
-    if (var->mode() == CONST) {
+    if (var->mode() != CONST) {
+      EmitStoreToStackLocalOrContextSlot(var, location);
+    } else if (var->throw_on_const_assignment(language_mode())) {
       __ CallRuntime(Runtime::kThrowConstAssignError);
-    } else {
-      EmitStoreToStackLocalOrContextSlot(var, location);
     }
   } else if (var->is_this() && var->mode() == CONST && op == Token::INIT) {
     // Initializing assignment to const {this} needs a write barrier.
     DCHECK(var->IsStackAllocated() || var->IsContextSlot());
     Label uninitialized_this;
     MemOperand location = VarOperand(var, r3);
     __ LoadP(r5, location);
     __ CompareRoot(r5, Heap::kTheHoleValueRootIndex);
     __ beq(&uninitialized_this);
     __ mov(r3, Operand(var->name()));
     __ push(r3);
     __ CallRuntime(Runtime::kThrowReferenceError);
     __ bind(&uninitialized_this);
     EmitStoreToStackLocalOrContextSlot(var, location);
-
-  } else if (!var->is_const_mode() || op == Token::INIT) {
+  } else {
+    DCHECK(var->mode() != CONST || op == Token::INIT);
     if (var->IsLookupSlot()) {
       // Assignment to var.
       __ Push(var->name());
       __ Push(r2);
       __ CallRuntime(is_strict(language_mode())
                          ? Runtime::kStoreLookupSlot_Strict
                          : Runtime::kStoreLookupSlot_Sloppy);
     } else {
       // Assignment to var or initializing assignment to let/const in harmony
       // mode.
       DCHECK((var->IsStackAllocated() || var->IsContextSlot()));
       MemOperand location = VarOperand(var, r3);
       if (FLAG_debug_code && var->mode() == LET && op == Token::INIT) {
         // Check for an uninitialized let binding.
         __ LoadP(r4, location);
         __ CompareRoot(r4, Heap::kTheHoleValueRootIndex);
         __ Check(eq, kLetBindingReInitialization);
       }
       EmitStoreToStackLocalOrContextSlot(var, location);
     }
-  } else {
-    DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT);
-    if (is_strict(language_mode())) {
-      __ CallRuntime(Runtime::kThrowConstAssignError);
-    }
-    // Silently ignore store in sloppy mode.
   }
 }
 
 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
   // Assignment to a property, using a named store IC.
   Property* prop = expr->target()->AsProperty();
   DCHECK(prop != NULL);
   DCHECK(prop->key()->IsLiteral());
 
   __ mov(StoreDescriptor::NameRegister(),
@@ skipping 1464 matching lines @@
   DCHECK(kOSRBranchInstruction == br_instr);
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OnStackReplacement()->entry());
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_S390