[turbofan] Avoid -0 checks for truncating word32 uses.

src/compiler/representation-change.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_REPRESENTATION_CHANGE_H_
 #define V8_COMPILER_REPRESENTATION_CHANGE_H_
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/simplified-operator.h"
 
@@ skipping 180 matching lines @@
   static UseInfo CheckedSignedSmallAsTaggedSigned() {
     return UseInfo(MachineRepresentation::kTaggedSigned, Truncation::Any(),
                    TypeCheckKind::kSignedSmall);
   }
   static UseInfo CheckedSignedSmallAsWord32(IdentifyZeros identify_zeros) {
     return UseInfo(MachineRepresentation::kWord32,
                    Truncation::Any(identify_zeros),
                    TypeCheckKind::kSignedSmall);
   }
   static UseInfo CheckedSigned32AsWord32(IdentifyZeros identify_zeros) {
-    return UseInfo(MachineRepresentation::kWord32, Truncation::Any(),
-                   TypeCheckKind::kSigned32);
+    return UseInfo(MachineRepresentation::kWord32,
+                   Truncation::Any(identify_zeros), TypeCheckKind::kSigned32);
   }
   static UseInfo CheckedNumberAsFloat64() {
     return UseInfo(MachineRepresentation::kFloat64, Truncation::Float64(),
                    TypeCheckKind::kNumber);
   }
   static UseInfo CheckedNumberAsWord32() {
     return UseInfo(MachineRepresentation::kWord32, Truncation::Word32(),
                    TypeCheckKind::kNumber);
   }
   static UseInfo CheckedNumberOrOddballAsFloat64() {
@@ skipping 120 matching lines @@
   Factory* factory() const { return isolate()->factory(); }
   SimplifiedOperatorBuilder* simplified() { return jsgraph()->simplified(); }
   MachineOperatorBuilder* machine() { return jsgraph()->machine(); }
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_REPRESENTATION_CHANGE_H_