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

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index 0e4b725a1439ec7f0dce97a1e576ce6ddbe01c27..4bc00c0e8fdc2bed372c28e9e00965f3fae4866e 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -94,7 +94,7 @@ void InternalArrayNArgumentsConstructorStub::InitializeDescriptor(
 
 
 static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
-                                          Condition cond, bool strong);
+                                          Condition cond, Strength strength);
 static void EmitSmiNonsmiComparison(MacroAssembler* masm, Register lhs,
                                     Register rhs, Label* lhs_not_nan,
                                     Label* slow, bool strict);
@@ -249,7 +249,7 @@ void DoubleToIStub::Generate(MacroAssembler* masm) {
 // Equality is almost reflexive (everything but NaN), so this is a test
 // for "identity and not NaN".
 static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
-                                          Condition cond, bool strong) {
+                                          Condition cond, Strength strength) {
   Label not_identical;
   Label heap_number, return_equal;
   __ cmp(r3, r4);
@@ -266,7 +266,7 @@ static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
     // Call runtime on identical symbols since we need to throw a TypeError.
     __ cmpi(r7, Operand(SYMBOL_TYPE));
     __ beq(slow);
-    if (strong) {
+    if (is_strong(strength)) {
       // Call the runtime on anything that is converted in the semantics, since
       // we need to throw a TypeError. Smis have already been ruled out.
       __ cmpi(r7, Operand(HEAP_NUMBER_TYPE));
@@ -284,7 +284,7 @@ static void EmitIdenticalObjectComparison(MacroAssembler* masm, Label* slow,
       // Call runtime on identical symbols since we need to throw a TypeError.
       __ cmpi(r7, Operand(SYMBOL_TYPE));
       __ beq(slow);
-      if (strong) {
+      if (is_strong(strength)) {
         // Call the runtime on anything that is converted in the semantics,
         // since we need to throw a TypeError. Smis and heap numbers have
         // already been ruled out.
@@ -594,7 +594,7 @@ void CompareICStub::GenerateGeneric(MacroAssembler* masm) {
 
   // Handle the case where the objects are identical.  Either returns the answer
   // or goes to slow.  Only falls through if the objects were not identical.
-  EmitIdenticalObjectComparison(masm, &slow, cc, strong());
+  EmitIdenticalObjectComparison(masm, &slow, cc, strength());
 
   // If either is a Smi (we know that not both are), then they can only
   // be strictly equal if the other is a HeapNumber.
@@ -705,7 +705,8 @@ void CompareICStub::GenerateGeneric(MacroAssembler* masm) {
   if (cc == eq) {
     native = strict() ? Builtins::STRICT_EQUALS : Builtins::EQUALS;
   } else {
-    native = strong() ? Builtins::COMPARE_STRONG : Builtins::COMPARE;
+    native =
+        is_strong(strength()) ? Builtins::COMPARE_STRONG : Builtins::COMPARE;
     int ncr;  // NaN compare result
     if (cc == lt || cc == le) {
       ncr = GREATER;
@@ -3797,7 +3798,7 @@ void CompareICStub::GenerateNumbers(MacroAssembler* masm) {
 
   __ bind(&unordered);
   __ bind(&generic_stub);
-  CompareICStub stub(isolate(), op(), strong(), CompareICState::GENERIC,
+  CompareICStub stub(isolate(), op(), strength(), CompareICState::GENERIC,
                      CompareICState::GENERIC, CompareICState::GENERIC);
   __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET);