[turbofan] introduce Int32/64AbsWithOverflow optional operator

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index 75a8f2f4e04fd672bb1f151f245976dee41139c1..b90d10d253e500030d770be0929e31b5cdd847a8 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -1126,6 +1126,8 @@ void InstructionSelector::VisitNode(Node* node) {
       return MarkAsWord32(node), VisitWord32ReverseBits(node);
     case IrOpcode::kWord32ReverseBytes:
       return MarkAsWord32(node), VisitWord32ReverseBytes(node);
+    case IrOpcode::kInt32AbsWithOverflow:
+      return MarkAsWord32(node), VisitInt32AbsWithOverflow(node);
     case IrOpcode::kWord32Popcnt:
       return MarkAsWord32(node), VisitWord32Popcnt(node);
     case IrOpcode::kWord64Popcnt:
@@ -1152,6 +1154,8 @@ void InstructionSelector::VisitNode(Node* node) {
       return MarkAsWord64(node), VisitWord64ReverseBits(node);
     case IrOpcode::kWord64ReverseBytes:
       return MarkAsWord64(node), VisitWord64ReverseBytes(node);
+    case IrOpcode::kInt64AbsWithOverflow:
+      return MarkAsWord64(node), VisitInt64AbsWithOverflow(node);
     case IrOpcode::kWord64Equal:
       return VisitWord64Equal(node);
     case IrOpcode::kInt32Add:
@@ -2446,6 +2450,8 @@ void InstructionSelector::VisitProjection(Node* node) {
     case IrOpcode::kWord32PairShl:
     case IrOpcode::kWord32PairShr:
     case IrOpcode::kWord32PairSar:
+    case IrOpcode::kInt32AbsWithOverflow:
+    case IrOpcode::kInt64AbsWithOverflow:
       if (ProjectionIndexOf(node->op()) == 0u) {
         Emit(kArchNop, g.DefineSameAsFirst(node), g.Use(value));
       } else {