Remove all non-function-name uses of CONST_LEGACY

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index 536123b282e1c612dbe0a0e24c5ff4a4676f82b4..135c2f14027b0e1b805c36e444a24563dd76d5d8 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -761,7 +761,7 @@ void FullCodeGenerator::VisitVariableDeclaration(
   VariableProxy* proxy = declaration->proxy();
   VariableMode mode = declaration->mode();
   Variable* variable = proxy->var();
-  bool hole_init = mode == LET || mode == CONST || mode == CONST_LEGACY;
+  bool hole_init = mode == LET || mode == CONST;
   switch (variable->location()) {
     case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED:
@@ -1284,17 +1284,12 @@ void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy,
   } else if (var->mode() == DYNAMIC_LOCAL) {
     Variable* local = var->local_if_not_shadowed();
     __ ldr(r0, ContextSlotOperandCheckExtensions(local, slow));
-    if (local->mode() == LET || local->mode() == CONST ||
-        local->mode() == CONST_LEGACY) {
+    if (local->mode() == LET || local->mode() == CONST) {
       __ CompareRoot(r0, Heap::kTheHoleValueRootIndex);
-      if (local->mode() == CONST_LEGACY) {
-        __ LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq);
-      } else {  // LET || CONST
-        __ b(ne, done);
-        __ mov(r0, Operand(var->name()));
-        __ push(r0);
-        __ CallRuntime(Runtime::kThrowReferenceError);
-      }
+      __ b(ne, done);
+      __ mov(r0, Operand(var->name()));
+      __ push(r0);
+      __ CallRuntime(Runtime::kThrowReferenceError);
     }
     __ jmp(done);
   }
@@ -1351,10 +1346,6 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
           __ push(r0);
           __ CallRuntime(Runtime::kThrowReferenceError);
           __ bind(&done);
-        } else {
-          // Uninitialized legacy const bindings are unholed.
-          DCHECK(var->mode() == CONST_LEGACY);
-          __ LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq);
         }
         context()->Plug(r0);
         break;
@@ -2235,8 +2226,7 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
     __ bind(&uninitialized_this);
     EmitStoreToStackLocalOrContextSlot(var, location);
 
-  } else if (!var->is_const_mode() ||
-             (var->mode() == CONST && op == Token::INIT)) {
+  } else if (!var->is_const_mode() || op == Token::INIT) {
     if (var->IsLookupSlot()) {
       // Assignment to var.
       __ Push(var->name());
@@ -2258,25 +2248,6 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
       EmitStoreToStackLocalOrContextSlot(var, location);
     }
 
-  } else if (var->mode() == CONST_LEGACY && op == Token::INIT) {
-    // Const initializers need a write barrier.
-    DCHECK(!var->IsParameter());  // No const parameters.
-    if (var->IsLookupSlot()) {
-      __ push(r0);
-      __ mov(r0, Operand(var->name()));
-      __ Push(cp, r0);  // Context and name.
-      __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot);
-    } else {
-      DCHECK(var->IsStackAllocated() || var->IsContextSlot());
-      Label skip;
-      MemOperand location = VarOperand(var, r1);
-      __ ldr(r2, location);
-      __ CompareRoot(r2, Heap::kTheHoleValueRootIndex);
-      __ b(ne, &skip);
-      EmitStoreToStackLocalOrContextSlot(var, location);
-      __ bind(&skip);
-    }
-
   } else {
     DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT);
     if (is_strict(language_mode())) {