[turbofan] Add TruncateFloat32ToUint32 operator to Turbofan.

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 fa21d52d1565d6d377cfeebc7c4cefbdd6906676..5e169b5576b3651834b327dc69f31bc70cebde4b 100644
--- a/src/compiler/ia32/instruction-selector-ia32.cc
+++ b/src/compiler/ia32/instruction-selector-ia32.cc
@@ -715,6 +715,11 @@ void InstructionSelector::VisitTruncateFloat32ToInt32(Node* node) {
 }
 
 
+void InstructionSelector::VisitTruncateFloat32ToUint32(Node* node) {
+  VisitRO(this, node, kSSEFloat32ToUint32);
+}
+
+
 void InstructionSelector::VisitChangeFloat64ToInt32(Node* node) {
   VisitRO(this, node, kSSEFloat64ToInt32);
 }