Remove support for legacy const, part 1

src/full-codegen/x64/full-codegen-x64.cc

 // Copyright 2012 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_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 268 matching lines @@
 
     SetVar(arguments, rax, rbx, rdx);
   }
 
   if (FLAG_trace) {
     __ CallRuntime(Runtime::kTraceEnter);
   }
 
   // Visit the declarations and body unless there is an illegal
   // redeclaration.
-  if (scope()->HasIllegalRedeclaration()) {
-    EmitIllegalRedeclaration();
-  } else {
-    PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS);
-    { Comment cmnt(masm_, "[ Declarations");
-      VisitDeclarations(scope()->declarations());
-    }
+  PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS);
+  {
+    Comment cmnt(masm_, "[ Declarations");
+    VisitDeclarations(scope()->declarations());
+  }
 
-    // Assert that the declarations do not use ICs. Otherwise the debugger
-    // won't be able to redirect a PC at an IC to the correct IC in newly
-    // recompiled code.
-    DCHECK_EQ(0, ic_total_count_);
+  // Assert that the declarations do not use ICs. Otherwise the debugger
+  // won't be able to redirect a PC at an IC to the correct IC in newly
+  // recompiled code.
+  DCHECK_EQ(0, ic_total_count_);
 
-    { Comment cmnt(masm_, "[ Stack check");
-      PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS);
-       Label ok;
-       __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
-       __ j(above_equal, &ok, Label::kNear);
-       __ call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
-       __ bind(&ok);
-    }
+  {
+    Comment cmnt(masm_, "[ Stack check");
+    PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS);
+    Label ok;
+    __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
+    __ j(above_equal, &ok, Label::kNear);
+    __ call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
+    __ bind(&ok);
+  }
 
-    { Comment cmnt(masm_, "[ Body");
-      DCHECK(loop_depth() == 0);
-      VisitStatements(literal()->body());
-      DCHECK(loop_depth() == 0);
-    }
+  {
+    Comment cmnt(masm_, "[ Body");
+    DCHECK(loop_depth() == 0);
+    VisitStatements(literal()->body());
+    DCHECK(loop_depth() == 0);
   }
 
   // Always emit a 'return undefined' in case control fell off the end of
   // the body.
   { Comment cmnt(masm_, "[ return <undefined>;");
     __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
     EmitReturnSequence();
   }
 }
 
@@ skipping 3664 matching lines @@
   DCHECK_EQ(
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64