[bigint] Resolve a few minor TODOs.

R=jkummerow@chromium.org

Bug: v8:6791
Change-Id: I55c11c1328c92983286a8173795ce38f0b1e9e8e
TBR: yangguo@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/735322Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48897}

src/builtins/builtins-array-gen.cc

@@ -532,11 +532,11 @@ class ArrayBuiltinCodeStubAssembler : public CodeStubAssembler {
     {
       if (direction == ForEachDirection::kForward) {
         // 8. Repeat, while k < len
-        GotoIfNumberGreaterThanOrEqual(k(), len_, &after_loop);
+        GotoIfNumericGreaterThanOrEqual(k(), len_, &after_loop);
       } else {
         // OR
         // 10. Repeat, while k >= 0
-        GotoIfNumberGreaterThanOrEqual(SmiConstant(-1), k(), &after_loop);
+        GotoIfNumericGreaterThanOrEqual(SmiConstant(-1), k(), &after_loop);
       }
 
       Label done_element(this, &to_);
@@ -1301,7 +1301,7 @@ TF_BUILTIN(FastArraySlice, FastArraySliceCodeStubAssembler) {
   //    else let k be min(relativeStart, len.value()).
   VARIABLE(k, MachineRepresentation::kTagged);
   Label relative_start_positive(this), relative_start_done(this);
-  GotoIfNumberGreaterThanOrEqual(relative_start, SmiConstant(0),
+  GotoIfNumericGreaterThanOrEqual(relative_start, SmiConstant(0),
                                   &relative_start_positive);
   k.Bind(NumberMax(NumberAdd(len.value(), relative_start), NumberConstant(0)));
   Goto(&relative_start_done);
@@ -1328,7 +1328,7 @@ TF_BUILTIN(FastArraySlice, FastArraySliceCodeStubAssembler) {
   //     else let final be min(relativeEnd, len).
   VARIABLE(final, MachineRepresentation::kTagged);
   Label relative_end_positive(this), relative_end_done(this);
-  GotoIfNumberGreaterThanOrEqual(relative_end.value(), NumberConstant(0),
+  GotoIfNumericGreaterThanOrEqual(relative_end.value(), NumberConstant(0),
                                   &relative_end_positive);
   final.Bind(NumberMax(NumberAdd(len.value(), relative_end.value()),
                        NumberConstant(0)));
@@ -1367,7 +1367,7 @@ TF_BUILTIN(FastArraySlice, FastArraySliceCodeStubAssembler) {
   BIND(&loop);
   {
     // 15. Repeat, while k < final
-    GotoIfNumberGreaterThanOrEqual(k.value(), final.value(), &after_loop);
+    GotoIfNumericGreaterThanOrEqual(k.value(), final.value(), &after_loop);
 
     Node* p_k = k.value();  //  ToString(context, k.value()) is no-op
 
@@ -2371,10 +2371,16 @@ void ArrayIncludesIndexofAssembler::Generate(SearchVariant variant) {
     {
       GotoIfNot(UintPtrLessThan(index_var.value(), array_length),
                 &return_not_found);
+
       Node* element_k = LoadFixedArrayElement(elements, index_var.value());
-      TNode<Object> result = CallRuntime(Runtime::kBigIntEqual, context,
+      Label continue_loop(this);
+      GotoIf(TaggedIsSmi(element_k), &continue_loop);
+      GotoIfNot(IsBigInt(element_k), &continue_loop);
+      TNode<Object> result = CallRuntime(Runtime::kBigIntEqualToBigInt, context,
                                          search_element, element_k);
-      GotoIf(WordEqual(result, TrueConstant()), &return_found);
+      Branch(WordEqual(result, TrueConstant()), &return_found, &continue_loop);
+
+      BIND(&continue_loop);
       Increment(&index_var);
       Goto(&bigint_loop);
     }
@@ -2782,7 +2788,7 @@ TF_BUILTIN(ArrayIteratorPrototypeNext, CodeStubAssembler) {
         length = var_length.value();
       }
 
-      GotoIfNumberGreaterThanOrEqual(index, length, &set_done);
+      GotoIfNumericGreaterThanOrEqual(index, length, &set_done);
 
       StoreObjectField(iterator, JSArrayIterator::kNextIndexOffset,
                        NumberInc(index));

src/builtins/builtins-collections-gen.cc

@@ -640,8 +640,8 @@ void CollectionsBuiltinsAssembler::SameValueZeroBigInt(Node* key,
   GotoIf(TaggedIsSmi(candidate_key), if_not_same);
   GotoIfNot(IsBigInt(candidate_key), if_not_same);
 
-  Branch(WordEqual(CallRuntime(Runtime::kBigIntEqual, NoContextConstant(), key,
-                               candidate_key),
+  Branch(WordEqual(CallRuntime(Runtime::kBigIntEqualToBigInt,
+                               NoContextConstant(), key, candidate_key),
                    TrueConstant()),
          if_same, if_not_same);
 }

src/code-stub-assembler.cc

@@ -546,8 +546,8 @@ TNode<Object> CodeStubAssembler::NumberMax(SloppyTNode<Object> a,
   // TODO(danno): This could be optimized by specifically handling smi cases.
   VARIABLE(result, MachineRepresentation::kTagged);
   Label done(this), greater_than_equal_a(this), greater_than_equal_b(this);
-  GotoIfNumberGreaterThanOrEqual(a, b, &greater_than_equal_a);
-  GotoIfNumberGreaterThanOrEqual(b, a, &greater_than_equal_b);
+  GotoIfNumericGreaterThanOrEqual(a, b, &greater_than_equal_a);
+  GotoIfNumericGreaterThanOrEqual(b, a, &greater_than_equal_b);
   result.Bind(NanConstant());
   Goto(&done);
   BIND(&greater_than_equal_a);
@@ -565,8 +565,8 @@ TNode<Object> CodeStubAssembler::NumberMin(SloppyTNode<Object> a,
   // TODO(danno): This could be optimized by specifically handling smi cases.
   VARIABLE(result, MachineRepresentation::kTagged);
   Label done(this), greater_than_equal_a(this), greater_than_equal_b(this);
-  GotoIfNumberGreaterThanOrEqual(a, b, &greater_than_equal_a);
-  GotoIfNumberGreaterThanOrEqual(b, a, &greater_than_equal_b);
+  GotoIfNumericGreaterThanOrEqual(a, b, &greater_than_equal_a);
+  GotoIfNumericGreaterThanOrEqual(b, a, &greater_than_equal_b);
   result.Bind(NanConstant());
   Goto(&done);
   BIND(&greater_than_equal_a);
@@ -4387,11 +4387,12 @@ Node* CodeStubAssembler::IsNumberArrayIndex(Node* number) {
   Label check_upper_bound(this), check_is_integer(this), out(this),
       return_false(this);
 
-  GotoIfNumberGreaterThanOrEqual(number, NumberConstant(0), &check_upper_bound);
+  GotoIfNumericGreaterThanOrEqual(number, NumberConstant(0),
+                                  &check_upper_bound);
   Goto(&return_false);
 
   BIND(&check_upper_bound);
-  GotoIfNumberGreaterThanOrEqual(number, NumberConstant(kMaxUInt32),
+  GotoIfNumericGreaterThanOrEqual(number, NumberConstant(kMaxUInt32),
                                   &return_false);
   Goto(&check_is_integer);
 
@@ -8196,8 +8197,7 @@ void CodeStubAssembler::BranchIfNumericRelationalComparison(
   }
 }
 
-// TODO(neis): Rename to GotoIfNumeric...?
-void CodeStubAssembler::GotoIfNumberGreaterThanOrEqual(Node* lhs, Node* rhs,
+void CodeStubAssembler::GotoIfNumericGreaterThanOrEqual(Node* lhs, Node* rhs,
                                                         Label* if_true) {
   Label if_false(this);
   BranchIfNumericRelationalComparison(
@@ -8973,8 +8973,8 @@ Node* CodeStubAssembler::Equal(Node* left, Node* right, Node* context,
 
         BIND(&if_right_bigint);
         {
-          result.Bind(CallRuntime(Runtime::kBigIntEqual, NoContextConstant(),
-                                  left, right));
+          result.Bind(CallRuntime(Runtime::kBigIntEqualToBigInt,
+                                  NoContextConstant(), left, right));
           Goto(&end);
         }
 
@@ -9147,7 +9147,7 @@ Node* CodeStubAssembler::StrictEqual(Node* lhs, Node* rhs,
   //         }
   //       } else if (lhs->IsBigInt()) {
   //         if (rhs->IsBigInt()) {
-  //           return %BigIntEqual(lhs, rhs);
+  //           return %BigIntEqualToBigInt(lhs, rhs);
   //         } else {
   //           return false;
   //         }
@@ -9331,7 +9331,7 @@ Node* CodeStubAssembler::StrictEqual(Node* lhs, Node* rhs,
                     WordEqual(var_type_feedback->value(),
                               SmiConstant(CompareOperationFeedback::kAny)));
               }
-              result.Bind(CallRuntime(Runtime::kBigIntEqual,
+              result.Bind(CallRuntime(Runtime::kBigIntEqualToBigInt,
                                       NoContextConstant(), lhs, rhs));
               Goto(&end);
             }
@@ -9516,8 +9516,8 @@ void CodeStubAssembler::BranchIfSameValue(Node* lhs, Node* rhs, Label* if_true,
       BIND(&if_lhsisbigint);
       {
         GotoIfNot(IsBigInt(rhs), if_false);
-        Node* const result =
-            CallRuntime(Runtime::kBigIntEqual, NoContextConstant(), lhs, rhs);
+        Node* const result = CallRuntime(Runtime::kBigIntEqualToBigInt,
+                                         NoContextConstant(), lhs, rhs);
         Branch(IsTrue(result), if_true, if_false);
       }
     }

src/code-stub-assembler.h

@@ -1735,7 +1735,7 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
     Branch(IsAccessorPair(value), if_accessor_pair, if_not_accessor_pair);
   }
 
-  void GotoIfNumberGreaterThanOrEqual(Node* lhs, Node* rhs, Label* if_false);
+  void GotoIfNumericGreaterThanOrEqual(Node* lhs, Node* rhs, Label* if_false);
 
   Node* Equal(Node* lhs, Node* rhs, Node* context,
               Variable* var_type_feedback = nullptr);

src/debug/debug-evaluate.cc

@@ -293,7 +293,7 @@ bool IntrinsicHasNoSideEffect(Runtime::FunctionId id) {
   V(SubString)                       \
   V(RegExpInternalReplace)           \
   /* BigInts */                      \
-  V(BigIntEqual)                     \
+  V(BigIntEqualToBigInt)             \
   V(BigIntToBoolean)                 \
   /* Literals */                     \
   V(CreateArrayLiteral)              \

src/runtime/runtime-bigint.cc

@@ -37,16 +37,13 @@ RUNTIME_FUNCTION(Runtime_BigIntCompareToNumber) {
   return *isolate->factory()->ToBoolean(result);
 }
 
-RUNTIME_FUNCTION(Runtime_BigIntEqual) {
+RUNTIME_FUNCTION(Runtime_BigIntEqualToBigInt) {
   SealHandleScope shs(isolate);
   DCHECK_EQ(2, args.length());
-  CONVERT_ARG_HANDLE_CHECKED(Object, lhs, 0);
-  CONVERT_ARG_HANDLE_CHECKED(Object, rhs, 1);
-  bool result = lhs->IsBigInt() && rhs->IsBigInt() &&
-                BigInt::EqualToBigInt(BigInt::cast(*lhs), BigInt::cast(*rhs));
+  CONVERT_ARG_HANDLE_CHECKED(BigInt, lhs, 0);
+  CONVERT_ARG_HANDLE_CHECKED(BigInt, rhs, 1);
+  bool result = BigInt::EqualToBigInt(*lhs, *rhs);
   return *isolate->factory()->ToBoolean(result);
-  // TODO(neis): Remove IsBigInt checks?
-  // TODO(neis): Rename to BigIntEqualToBigInt.
 }
 
 RUNTIME_FUNCTION(Runtime_BigIntEqualToNumber) {

src/runtime/runtime.h

@@ -73,7 +73,7 @@ namespace internal {
   F(BigIntBinaryOp, 3, 1)            \
   F(BigIntCompareToBigInt, 3, 1)     \
   F(BigIntCompareToNumber, 3, 1)     \
-  F(BigIntEqual, 2, 1)               \
+  F(BigIntEqualToBigInt, 2, 1)       \
   F(BigIntEqualToNumber, 2, 1)       \
   F(BigIntEqualToString, 2, 1)       \
   F(BigIntToBoolean, 1, 1)           \