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

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 1cc0b0d1a2f2d1fb1929423eb7c936ab39e06d5b..957af0baa5532178e01b893fb3df8dd6d5ce59d1 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2159,8 +2159,8 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   DCHECK(ToRegister(instr->right()).is(r0));
   DCHECK(ToRegister(instr->result()).is(r0));
 
-  Handle<Code> code = CodeFactory::BinaryOpIC(
-      isolate(), instr->op(), instr->language_mode()).code();
+  Handle<Code> code =
+      CodeFactory::BinaryOpIC(isolate(), instr->op(), instr->strength()).code();
   // Block literal pool emission to ensure nop indicating no inlined smi code
   // is in the correct position.
   Assembler::BlockConstPoolScope block_const_pool(masm());
@@ -2596,7 +2596,8 @@ 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);
   // This instruction also signals no smi code inlined.
   __ cmp(r0, Operand::Zero());
@@ -2914,7 +2915,7 @@ 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);
   // This instruction also signals no smi code inlined.
   __ cmp(r0, Operand::Zero());