[strong] Refactor ObjectStrength into a replacement for strong boolean args

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index c384a4a87ee7c533455ad3c742a1ae731d29b461..d68122b7b86e14ee1e5d58fe4aedbb196b54f228 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -1039,7 +1039,7 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
     // Record position before stub call for type feedback.
     SetSourcePosition(clause->position());
     Handle<Code> ic = CodeFactory::CompareIC(isolate(), Token::EQ_STRICT,
-                                             language_mode()).code();
+                                             strength(language_mode())).code();
     CallIC(ic, clause->CompareId());
     patch_site.EmitPatchInfo();
 
@@ -2416,8 +2416,8 @@ void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
 
   __ bind(&stub_call);
   __ movp(rax, rcx);
-  Handle<Code> code = CodeFactory::BinaryOpIC(
-      isolate(), op, language_mode()).code();
+  Handle<Code> code =
+      CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code();
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
   __ jmp(&done, Label::kNear);
@@ -2529,8 +2529,8 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
 
 void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
   __ Pop(rdx);
-  Handle<Code> code = CodeFactory::BinaryOpIC(
-      isolate(), op, language_mode()).code();
+  Handle<Code> code =
+      CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code();
   JumpPatchSite patch_site(masm_);    // unbound, signals no inlined smi code.
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
@@ -4981,8 +4981,8 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
   __ bind(&stub_call);
   __ movp(rdx, rax);
   __ Move(rax, Smi::FromInt(1));
-  Handle<Code> code = CodeFactory::BinaryOpIC(
-      isolate(), expr->binary_op(), language_mode()).code();
+  Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), expr->binary_op(),
+                                              strength(language_mode())).code();
   CallIC(code, expr->CountBinOpFeedbackId());
   patch_site.EmitPatchInfo();
   __ bind(&done);
@@ -5248,8 +5248,8 @@ void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) {
 
       // Record position and call the compare IC.
       SetSourcePosition(expr->position());
-      Handle<Code> ic =
-          CodeFactory::CompareIC(isolate(), op, language_mode()).code();
+      Handle<Code> ic = CodeFactory::CompareIC(
+                            isolate(), op, strength(language_mode())).code();
       CallIC(ic, expr->CompareOperationFeedbackId());
       patch_site.EmitPatchInfo();