[turbofan] CheckBounds with Unsigned32 inputs is also supported.

src/compiler/simplified-lowering.cc

Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
index fdecfc0ab46b86bffe82905ad80c93b9cb8aab8a..1bf1e4fb3ebbf3916370c596eab327cc6a6839fc 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -1810,8 +1810,14 @@ class RepresentationSelector {
       }
 
       case IrOpcode::kCheckBounds: {
-        VisitBinop(node, UseInfo::CheckedSigned32AsWord32(),
-                   UseInfo::TruncatingWord32(), MachineRepresentation::kWord32);
+        if (TypeOf(node->InputAt(0))->Is(Type::Unsigned32())) {
+          VisitBinop(node, UseInfo::TruncatingWord32(),
+                     MachineRepresentation::kWord32);
+        } else {
+          VisitBinop(node, UseInfo::CheckedSigned32AsWord32(),
+                     UseInfo::TruncatingWord32(),
+                     MachineRepresentation::kWord32);
+        }
         return;
       }
       case IrOpcode::kCheckIf: {