[turbofan] Improve NumberAbs lowering for Signed32 input.

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 57f3fd5b436ccc60c4633089cf101211ac4b073b..826001729f3f9294826b547bbe328ea7701ed522 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -1603,7 +1603,7 @@ class RepresentationSelector {
           VisitUnop(node, UseInfo::TruncatingWord32(),
                     MachineRepresentation::kWord32);
           if (lower()) DeferReplacement(node, node->InputAt(0));
-        } else if (InputIs(node, type_cache_.kSafeSigned32)) {
+        } else if (InputIs(node, Type::Signed32())) {
           VisitUnop(node, UseInfo::TruncatingWord32(),
                     MachineRepresentation::kWord32);
           if (lower()) DeferReplacement(node, lowering->Int32Abs(node));