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

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index fea9e6da08093bd2ddfbb6c910737b9a0151862f..b4804d0ffdaead24e94a8fecb936af9b08a3a4df 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2064,8 +2064,8 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   DCHECK(ToRegister(instr->right()).is(eax));
   DCHECK(ToRegister(instr->result()).is(eax));
 
-  Handle<Code> code = CodeFactory::BinaryOpIC(
-      isolate(), instr->op(), instr->language_mode()).code();
+  Handle<Code> code =
+      CodeFactory::BinaryOpIC(isolate(), instr->op(), instr->strength()).code();
   CallCode(code, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -2491,7 +2491,8 @@ static Condition ComputeCompareCondition(Token::Value op) {
 void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) {
   Token::Value op = instr->op();
 
-  Handle<Code> ic = CodeFactory::CompareIC(isolate(), op, SLOPPY).code();
+  Handle<Code> ic =
+      CodeFactory::CompareIC(isolate(), op, Strength::WEAK).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   Condition condition = ComputeCompareCondition(op);
@@ -2763,7 +2764,7 @@ void LCodeGen::DoCmpT(LCmpT* instr) {
   Token::Value op = instr->op();
 
   Handle<Code> ic =
-      CodeFactory::CompareIC(isolate(), op, instr->language_mode()).code();
+      CodeFactory::CompareIC(isolate(), op, instr->strength()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   Condition condition = ComputeCompareCondition(op);