BASELINE: Update Chromium to 63.0.3239.87

Change-Id: Iac27464730121b4fac76869d87d622504642e016
Reviewed-by: Peter Varga <pvarga@inf.u-szeged.hu>

1 files changed, 28 insertions, 0 deletions

diff --git a/chromium/v8/src/compiler/effect-control-linearizer.cc b/chromium/v8/src/compiler/effect-control-linearizer.cc
index 3e0ac820dd3..d886fda97a8 100644
--- a/chromium/v8/src/compiler/effect-control-linearizer.cc
+++ b/chromium/v8/src/compiler/effect-control-linearizer.cc
@@ -718,6 +718,9 @@ bool EffectControlLinearizer::TryWireInStateEffect(Node* node,
     case IrOpcode::kObjectIsCallable:
       result = LowerObjectIsCallable(node);
       break;
+    case IrOpcode::kObjectIsConstructor:
+      result = LowerObjectIsConstructor(node);
+      break;
     case IrOpcode::kObjectIsDetectableCallable:
       result = LowerObjectIsDetectableCallable(node);
       break;
@@ -1931,6 +1934,31 @@ Node* EffectControlLinearizer::LowerObjectIsCallable(Node* node) {
   return done.PhiAt(0);
 }
 
+Node* EffectControlLinearizer::LowerObjectIsConstructor(Node* node) {
+  Node* value = node->InputAt(0);
+
+  auto if_smi = __ MakeDeferredLabel();
+  auto done = __ MakeLabel(MachineRepresentation::kBit);
+
+  Node* check = ObjectIsSmi(value);
+  __ GotoIf(check, &if_smi);
+
+  Node* value_map = __ LoadField(AccessBuilder::ForMap(), value);
+  Node* value_bit_field =
+      __ LoadField(AccessBuilder::ForMapBitField(), value_map);
+  Node* vfalse =
+      __ Word32Equal(__ Int32Constant(1 << Map::kIsConstructor),
+                     __ Word32And(value_bit_field,
+                                  __ Int32Constant(1 << Map::kIsConstructor)));
+  __ Goto(&done, vfalse);
+
+  __ Bind(&if_smi);
+  __ Goto(&done, __ Int32Constant(0));
+
+  __ Bind(&done);
+  return done.PhiAt(0);
+}
+
 Node* EffectControlLinearizer::LowerObjectIsDetectableCallable(Node* node) {
   Node* value = node->InputAt(0);