BASELINE: Update Chromium to 67.0.3396.76

Change-Id: I9a14af4efb092ab203e9364f0779fca781909a38
Reviewed-by: Michal Klocek <michal.klocek@qt.io>

1 files changed, 21 insertions, 1 deletions

diff --git a/chromium/v8/src/compiler/representation-change.cc b/chromium/v8/src/compiler/representation-change.cc
index 71aa1433711..34b532a6c6c 100644
--- a/chromium/v8/src/compiler/representation-change.cc
+++ b/chromium/v8/src/compiler/representation-change.cc
@@ -608,6 +608,16 @@ Node* RepresentationChanger::MakeTruncatedInt32Constant(double value) {
   return jsgraph()->Int32Constant(DoubleToInt32(value));
 }
 
+void RepresentationChanger::InsertUnconditionalDeopt(Node* node,
+                                                     DeoptimizeReason reason) {
+  Node* effect = NodeProperties::GetEffectInput(node);
+  Node* control = NodeProperties::GetControlInput(node);
+  Node* deopt =
+      jsgraph()->graph()->NewNode(simplified()->CheckIf(reason),
+                                  jsgraph()->Int32Constant(0), effect, control);
+  NodeProperties::ReplaceEffectInput(node, deopt);
+}
+
 Node* RepresentationChanger::GetWord32RepresentationFor(
     Node* node, MachineRepresentation output_rep, Type* output_type,
     Node* use_node, UseInfo use_info) {
@@ -639,7 +649,17 @@ Node* RepresentationChanger::GetWord32RepresentationFor(
     return jsgraph()->graph()->NewNode(
         jsgraph()->common()->DeadValue(MachineRepresentation::kWord32), node);
   } else if (output_rep == MachineRepresentation::kBit) {
-    return node;  // Sloppy comparison -> word32
+    CHECK(output_type->Is(Type::Boolean()));
+    if (use_info.truncation().IsUsedAsWord32()) {
+      return node;
+    } else {
+      CHECK(Truncation::Any(kIdentifyZeros)
+                .IsLessGeneralThan(use_info.truncation()));
+      CHECK_NE(use_info.type_check(), TypeCheckKind::kNone);
+      InsertUnconditionalDeopt(use_node, DeoptimizeReason::kNotASmi);
+      return jsgraph()->graph()->NewNode(
+          jsgraph()->common()->DeadValue(MachineRepresentation::kWord32), node);
+    }
   } else if (output_rep == MachineRepresentation::kFloat64) {
     if (output_type->Is(Type::Signed32())) {
       op = machine()->ChangeFloat64ToInt32();