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

src/arm64/lithium-codegen-arm64.cc

Index: src/arm64/lithium-codegen-arm64.cc
diff --git a/src/arm64/lithium-codegen-arm64.cc b/src/arm64/lithium-codegen-arm64.cc
index 461da112cdd520b1a1056d4fa1e240665b71f602..b49a6c22dca57898cb78a9b142f33dfdd3932175 100644
--- a/src/arm64/lithium-codegen-arm64.cc
+++ b/src/arm64/lithium-codegen-arm64.cc
@@ -1769,8 +1769,8 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   DCHECK(ToRegister(instr->right()).is(x0));
   DCHECK(ToRegister(instr->result()).is(x0));
 
-  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);
 }
 
@@ -2529,7 +2529,7 @@ void LCodeGen::DoCmpT(LCmpT* instr) {
   DCHECK(ToRegister(instr->left()).Is(x1));
   DCHECK(ToRegister(instr->right()).Is(x0));
   Handle<Code> ic =
-      CodeFactory::CompareIC(isolate(), op, instr->language_mode()).code();
+      CodeFactory::CompareIC(isolate(), op, instr->strength()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
   // Signal that we don't inline smi code before this stub.
   InlineSmiCheckInfo::EmitNotInlined(masm());
@@ -5593,7 +5593,8 @@ void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) {
   DCHECK(ToRegister(instr->context()).is(cp));
   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);
   InlineSmiCheckInfo::EmitNotInlined(masm());