[csa] Fix incorrect usages of SelectTaggedConstant() and drop it.

... in favor of SelectConstant().

Bug: chromium:829679
Change-Id: Ic7cc887254b4f6b29339b06c5782d71f77d3c9a5
Reviewed-on: https://chromium-review.googlesource.com/999601Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52446}

src/builtins/builtins-object-gen.cc

@@ -771,11 +771,15 @@ TF_BUILTIN(ObjectPrototypeToString, ObjectBuiltinsAssembler) {
     // as the exception is observable.
     Node* receiver_is_array =
         CallRuntime(Runtime::kArrayIsArray, context, receiver);
-    Node* builtin_tag = SelectTaggedConstant<Object>(
-        IsTrue(receiver_is_array), LoadRoot(Heap::kArray_stringRootIndex),
-        SelectTaggedConstant<Object>(IsCallableMap(receiver_map),
-                                     LoadRoot(Heap::kFunction_stringRootIndex),
-                                     LoadRoot(Heap::kObject_stringRootIndex)));
+    TNode<String> builtin_tag = Select<String>(
+        IsTrue(receiver_is_array),
+        [=] { return CAST(LoadRoot(Heap::kArray_stringRootIndex)); },
+        [=] {
+          return Select<String>(
+              IsCallableMap(receiver_map),
+              [=] { return CAST(LoadRoot(Heap::kFunction_stringRootIndex)); },
+              [=] { return CAST(LoadRoot(Heap::kObject_stringRootIndex)); });
+        });
 
     // Lookup the @@toStringTag property on the {receiver}.
     VARIABLE(var_tag, MachineRepresentation::kTagged,

src/builtins/builtins-string-gen.cc

@@ -1943,7 +1943,7 @@ TNode<Smi> StringBuiltinsAssembler::ToSmiBetweenZeroAnd(
     {
       TNode<Smi> const zero = SmiConstant(0);
       var_result =
-          SelectTaggedConstant(SmiLessThan(value_smi, zero), zero, limit);
+          SelectConstant<Smi>(SmiLessThan(value_smi, zero), zero, limit);
       Goto(&out);
     }
   }
@@ -1956,8 +1956,8 @@ TNode<Smi> StringBuiltinsAssembler::ToSmiBetweenZeroAnd(
     TNode<Float64T> const float_zero = Float64Constant(0.);
     TNode<Smi> const smi_zero = SmiConstant(0);
     TNode<Float64T> const value_float = LoadHeapNumberValue(value_int_hn);
-    var_result = SelectTaggedConstant(Float64LessThan(value_float, float_zero),
-                                      smi_zero, limit);
+    var_result = SelectConstant<Smi>(Float64LessThan(value_float, float_zero),
+                                     smi_zero, limit);
     Goto(&out);
   }
 

src/code-stub-assembler.cc

@@ -561,11 +561,11 @@ TNode<Float64T> CodeStubAssembler::SmiToFloat64(SloppyTNode<Smi> value) {
 }
 
 TNode<Smi> CodeStubAssembler::SmiMax(SloppyTNode<Smi> a, SloppyTNode<Smi> b) {
-  return SelectTaggedConstant(SmiLessThan(a, b), b, a);
+  return SelectConstant<Smi>(SmiLessThan(a, b), b, a);
 }
 
 TNode<Smi> CodeStubAssembler::SmiMin(SloppyTNode<Smi> a, SloppyTNode<Smi> b) {
-  return SelectTaggedConstant(SmiLessThan(a, b), a, b);
+  return SelectConstant<Smi>(SmiLessThan(a, b), a, b);
 }
 
 TNode<Object> CodeStubAssembler::NumberMax(SloppyTNode<Object> a,
@@ -1397,9 +1397,11 @@ TNode<BoolT> CodeStubAssembler::TaggedDoesntHaveInstanceType(
 TNode<HeapObject> CodeStubAssembler::LoadFastProperties(
     SloppyTNode<JSObject> object) {
   CSA_SLOW_ASSERT(this, Word32Not(IsDictionaryMap(LoadMap(object))));
-  Node* properties = LoadObjectField(object, JSObject::kPropertiesOrHashOffset);
-  return SelectTaggedConstant<HeapObject>(
-      TaggedIsSmi(properties), EmptyFixedArrayConstant(), properties);
+  TNode<Object> properties =
+      LoadObjectField(object, JSObject::kPropertiesOrHashOffset);
+  return Select<HeapObject>(TaggedIsSmi(properties),
+                            [=] { return EmptyFixedArrayConstant(); },
+                            [=] { return CAST(properties); });
 }
 
 TNode<HeapObject> CodeStubAssembler::LoadSlowProperties(
@@ -1407,9 +1409,9 @@ TNode<HeapObject> CodeStubAssembler::LoadSlowProperties(
   CSA_SLOW_ASSERT(this, IsDictionaryMap(LoadMap(object)));
   TNode<Object> properties =
       LoadObjectField(object, JSObject::kPropertiesOrHashOffset);
-  return SelectTaggedConstant<HeapObject>(TaggedIsSmi(properties),
-                                          EmptyPropertyDictionaryConstant(),
-                                          CAST(properties));
+  return Select<HeapObject>(TaggedIsSmi(properties),
+                            [=] { return EmptyPropertyDictionaryConstant(); },
+                            [=] { return CAST(properties); });
 }
 
 TNode<FixedArrayBase> CodeStubAssembler::LoadElements(

src/code-stub-assembler.h

@@ -279,7 +279,7 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   }
 
 #define SMI_COMPARISON_OP(SmiOpName, IntPtrOpName)                       \
-  Node* SmiOpName(Node* a, Node* b) {                                    \
+  TNode<BoolT> SmiOpName(Node* a, Node* b) {                             \
     return IntPtrOpName(BitcastTaggedToWord(a), BitcastTaggedToWord(b)); \
   }
   SMI_COMPARISON_OP(SmiEqual, WordEqual)
@@ -376,13 +376,6 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   TNode<IntPtrT> SelectIntPtrConstant(SloppyTNode<BoolT> condition,
                                       int true_value, int false_value);
   TNode<Oddball> SelectBooleanConstant(SloppyTNode<BoolT> condition);
-  template <class A>
-  TNode<A> SelectTaggedConstant(SloppyTNode<BoolT> condition,
-                                TNode<A> true_value,
-                                SloppyTNode<A> false_value) {
-    static_assert(std::is_base_of<Object, A>::value, "not a tagged type");
-    return SelectConstant<A>(condition, true_value, false_value);
-  }
   TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, Smi* true_value,
                                Smi* false_value);
   TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, int true_value,