Use weak cell in LoadGlobal handler.

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/816923004

Cr-Commit-Position: refs/heads/master@{#25902}

src/ic/arm/handler-compiler-arm.cc

@@ -704,7 +704,8 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
 
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  __ mov(result, Operand(cell));
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
   __ ldr(result, FieldMemOperand(result, Cell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.

src/ic/arm64/handler-compiler-arm64.cc

@@ -334,7 +334,8 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
 
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  __ Mov(result, Operand(cell));
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
   __ Ldr(result, FieldMemOperand(result, Cell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.

src/ic/ia32/handler-compiler-ia32.cc

@@ -724,12 +724,9 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   FrontendHeader(receiver(), name, &miss);
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  if (masm()->serializer_enabled()) {
-    __ mov(result, Immediate(cell));
-    __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
-  } else {
-    __ mov(result, Operand::ForCell(cell));
-  }
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
+  __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.
   if (is_configurable) {

src/ic/mips/handler-compiler-mips.cc

@@ -701,7 +701,8 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
 
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  __ li(result, Operand(cell));
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
   __ lw(result, FieldMemOperand(result, Cell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.

src/ic/x64/handler-compiler-x64.cc

@@ -712,7 +712,8 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
 
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  __ Move(result, cell);
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
   __ movp(result, FieldOperand(result, PropertyCell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.

src/ic/x87/handler-compiler-x87.cc

@@ -724,12 +724,9 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   FrontendHeader(receiver(), name, &miss);
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  if (masm()->serializer_enabled()) {
-    __ mov(result, Immediate(cell));
-    __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
-  } else {
-    __ mov(result, Operand::ForCell(cell));
-  }
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
+  __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.
   if (is_configurable) {