[turbofan] Introduce WordRor machine operator.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index 111ca2d956a17e846b64006756e01d41825d6c66..0d7dbb669aefe070fac65d189fc8b44388d13fc5 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -329,6 +329,16 @@ void InstructionSelector::VisitWord64Sar(Node* node) {
 }
 
 
+void InstructionSelector::VisitWord32Ror(Node* node) {
+  VisitRRO(this, kArm64Ror32, node, kShift32Imm);
+}
+
+
+void InstructionSelector::VisitWord64Ror(Node* node) {
+  VisitRRO(this, kArm64Ror, node, kShift64Imm);
+}
+
+
 void InstructionSelector::VisitInt32Add(Node* node) {
   VisitBinop(this, node, kArm64Add32, kArithimeticImm);
 }