[turbofan] Propagate minus-zero truncation in representation inference.

test/cctest/compiler/test-representation-change.cc

Index: test/cctest/compiler/test-representation-change.cc
diff --git a/test/cctest/compiler/test-representation-change.cc b/test/cctest/compiler/test-representation-change.cc
index 94bd460850dc4e3ec17114cdbb498b7101d39572..e61713f836c4d88343fb0f4bee825d1299bbe752 100644
--- a/test/cctest/compiler/test-representation-change.cc
+++ b/test/cctest/compiler/test-representation-change.cc
@@ -445,20 +445,16 @@ static void TestMinusZeroCheck(IrOpcode::Value expected, Type* from_type) {
   RepresentationChangerTester r;
 
   CheckChange(expected, MachineRepresentation::kFloat64, from_type,
-              UseInfo::CheckedSignedSmallAsWord32(
-                  CheckForMinusZeroMode::kCheckForMinusZero));
+              UseInfo::CheckedSignedSmallAsWord32(kDistinguishZeros));
 
   CheckChange(expected, MachineRepresentation::kFloat64, from_type,
-              UseInfo::CheckedSignedSmallAsWord32(
-                  CheckForMinusZeroMode::kDontCheckForMinusZero));
+              UseInfo::CheckedSignedSmallAsWord32(kIdentifyZeros));
 
   CheckChange(expected, MachineRepresentation::kFloat64, from_type,
-              UseInfo::CheckedSigned32AsWord32(
-                  CheckForMinusZeroMode::kCheckForMinusZero));
+              UseInfo::CheckedSigned32AsWord32(kDistinguishZeros));
 
   CheckChange(expected, MachineRepresentation::kFloat64, from_type,
-              UseInfo::CheckedSigned32AsWord32(
-                  CheckForMinusZeroMode::kDontCheckForMinusZero));
+              UseInfo::CheckedSigned32AsWord32(kDistinguishZeros));
 }
 
 TEST(MinusZeroCheck) {