[turbofan] Turn Math.clz32 into an inlinable builtin.

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 0d0314dda328d26c78b9bf3f5cf6fcd2c38d69c2..c3837ad8b602e99fba10055f61cdbb5b81d6dd00 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -658,6 +658,8 @@ void InstructionSelector::VisitNode(Node* node) {
       return VisitWord32Ror(node);
     case IrOpcode::kWord32Equal:
       return VisitWord32Equal(node);
+    case IrOpcode::kWord32Clz:
+      return VisitWord32Clz(node);
     case IrOpcode::kWord64And:
       return VisitWord64And(node);
     case IrOpcode::kWord64Or: