Revert "Clean up runtime functions for Maths."

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index a25215a526bc14ba0535cef11dbe25fad979b1d5..f0b9438626e98867763c4ff4cb833891dbe41e68 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -3698,6 +3698,26 @@ void FullCodeGenerator::EmitStringCompare(CallRuntime* expr) {
 }
 
 
+void FullCodeGenerator::EmitMathLog(CallRuntime* expr) {
+  // Load the argument on the stack and call the runtime function.
+  ZoneList<Expression*>* args = expr->arguments();
+  ASSERT(args->length() == 1);
+  VisitForStackValue(args->at(0));
+  __ CallRuntime(Runtime::kMath_log, 1);
+  context()->Plug(rax);
+}
+
+
+void FullCodeGenerator::EmitMathSqrt(CallRuntime* expr) {
+  // Load the argument on the stack and call the runtime function.
+  ZoneList<Expression*>* args = expr->arguments();
+  ASSERT(args->length() == 1);
+  VisitForStackValue(args->at(0));
+  __ CallRuntime(Runtime::kMath_sqrt, 1);
+  context()->Plug(rax);
+}
+
+
 void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() >= 2);