[turbofan] Introduce WordRor machine operator.

src/compiler/ia32/instruction-selector-ia32.cc

Index: src/compiler/ia32/instruction-selector-ia32.cc
diff --git a/src/compiler/ia32/instruction-selector-ia32.cc b/src/compiler/ia32/instruction-selector-ia32.cc
index a057a1e713675f1d417595b6bc80537a06f96b56..1e22aa638a8794765fed5ba1a4ca5647168faf7c 100644
--- a/src/compiler/ia32/instruction-selector-ia32.cc
+++ b/src/compiler/ia32/instruction-selector-ia32.cc
@@ -271,6 +271,11 @@ void InstructionSelector::VisitWord32Sar(Node* node) {
 }
 
 
+void InstructionSelector::VisitWord32Ror(Node* node) {
+  VisitShift(this, node, kIA32Ror);
+}
+
+
 void InstructionSelector::VisitInt32Add(Node* node) {
   VisitBinop(this, node, kIA32Add);
 }