[turbofan] introduce Int32/64AbsWithOverflow optional operator

src/compiler/x64/instruction-selector-x64.cc

Index: src/compiler/x64/instruction-selector-x64.cc
diff --git a/src/compiler/x64/instruction-selector-x64.cc b/src/compiler/x64/instruction-selector-x64.cc
index 04eb8f494d0ff2547ea4c02554f5658e80f9a05a..b1e1f512beaf9968b0cd6d63adc6831471df4caa 100644
--- a/src/compiler/x64/instruction-selector-x64.cc
+++ b/src/compiler/x64/instruction-selector-x64.cc
@@ -2469,6 +2469,14 @@ void InstructionSelector::VisitSimd32x4Select(Node* node) {
        g.UseRegister(node->InputAt(2)));
 }
 
+void InstructionSelector::VisitInt32AbsWithOverflow(Node* node) {
+  UNREACHABLE();
+}
+
+void InstructionSelector::VisitInt64AbsWithOverflow(Node* node) {
+  UNREACHABLE();
+}
+
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {