[turbofan] Introduce WordRor machine 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 965e612e2d636d5dac56509db67744442e7c4603..5f185b13d8b137fdb3481ab1dafa7fa05783825b 100644
--- a/src/compiler/x64/instruction-selector-x64.cc
+++ b/src/compiler/x64/instruction-selector-x64.cc
@@ -348,6 +348,16 @@ void InstructionSelector::VisitWord64Sar(Node* node) {
 }
 
 
+void InstructionSelector::VisitWord32Ror(Node* node) {
+  VisitWord32Shift(this, node, kX64Ror32);
+}
+
+
+void InstructionSelector::VisitWord64Ror(Node* node) {
+  VisitWord64Shift(this, node, kX64Ror);
+}
+
+
 void InstructionSelector::VisitInt32Add(Node* node) {
   VisitBinop(this, node, kX64Add32);
 }