X87: Remove all non-function-name uses of CONST_LEGACY.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index a44a1e5494d9f54b5adae76829a4e8b390e855a9..074f284368d59ecf3d661ca1aaaab62dffe0e0d7 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -705,7 +705,7 @@ 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:
@@ -1199,16 +1199,11 @@ void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy,
   } else if (var->mode() == DYNAMIC_LOCAL) {
     Variable* local = var->local_if_not_shadowed();
     __ mov(eax, ContextSlotOperandCheckExtensions(local, slow));
-    if (local->mode() == LET || local->mode() == CONST ||
-        local->mode() == CONST_LEGACY) {
+    if (local->mode() == LET || local->mode() == CONST) {
       __ cmp(eax, isolate()->factory()->the_hole_value());
       __ j(not_equal, done);
-      if (local->mode() == CONST_LEGACY) {
-        __ mov(eax, isolate()->factory()->undefined_value());
-      } else {  // LET || CONST
-        __ push(Immediate(var->name()));
-        __ CallRuntime(Runtime::kThrowReferenceError);
-      }
+      __ push(Immediate(var->name()));
+      __ CallRuntime(Runtime::kThrowReferenceError);
     }
     __ jmp(done);
   }
@@ -1266,10 +1261,6 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
           // binding in harmony mode.
           __ push(Immediate(var->name()));
           __ CallRuntime(Runtime::kThrowReferenceError);
-        } else {
-          // Uninitialized legacy const bindings are unholed.
-          DCHECK(var->mode() == CONST_LEGACY);
-          __ mov(eax, isolate()->factory()->undefined_value());
         }
         __ bind(&done);
         context()->Plug(eax);
@@ -2135,8 +2126,7 @@ 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(Immediate(var->name()));
@@ -2158,25 +2148,6 @@ 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(eax);
-      __ push(esi);
-      __ push(Immediate(var->name()));
-      __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot);
-    } else {
-      DCHECK(var->IsStackLocal() || var->IsContextSlot());
-      Label skip;
-      MemOperand location = VarOperand(var, ecx);
-      __ mov(edx, location);
-      __ cmp(edx, isolate()->factory()->the_hole_value());
-      __ j(not_equal, &skip, Label::kNear);
-      EmitStoreToStackLocalOrContextSlot(var, location);
-      __ bind(&skip);
-    }
-
   } else {
     DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT);
     if (is_strict(language_mode())) {