Clean up runtime functions for Maths.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index a7ef0cbd056c5b99f7ce490ad1b0d4f2df4f5295..d4aa64eb4b7834495fe5277672ff89da704b8307 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -10785,6 +10785,15 @@ void HOptimizedGraphBuilder::GenerateMathSqrt(CallRuntime* call) {
 }
 
 
+void HOptimizedGraphBuilder::GenerateMathExp(CallRuntime* call) {
+  ASSERT(call->arguments()->length() == 1);
+  CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
+  HValue* value = Pop();
+  HInstruction* result = NewUncasted<HUnaryMathOperation>(value, kMathExp);
+  return ast_context()->ReturnInstruction(result, call->id());
+}
+
+
 void HOptimizedGraphBuilder::GenerateGetCachedArrayIndex(CallRuntime* call) {
   ASSERT(call->arguments()->length() == 1);
   CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));