[turbofan] introduce Int32/64AbsWithOverflow optional operator

src/compiler/x87/instruction-selector-x87.cc

Index: src/compiler/x87/instruction-selector-x87.cc
diff --git a/src/compiler/x87/instruction-selector-x87.cc b/src/compiler/x87/instruction-selector-x87.cc
index ede0d45ce0640ac49ce323d1aee41a774391c093..c11ac287d0d25fb2c5f58d1bfd49d5f553e452db 100644
--- a/src/compiler/x87/instruction-selector-x87.cc
+++ b/src/compiler/x87/instruction-selector-x87.cc
@@ -1833,6 +1833,14 @@ void InstructionSelector::VisitAtomicStore(Node* node) {
   Emit(code, 0, nullptr, input_count, inputs);
 }
 
+void InstructionSelector::VisitInt32AbsWithOverflow(Node* node) {
+  UNREACHABLE();
+}
+
+void InstructionSelector::VisitInt64AbsWithOverflow(Node* node) {
+  UNREACHABLE();
+}
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {