Inlining of calls with optional parameters.

runtime/vm/compiler.cc

Index: runtime/vm/compiler.cc
diff --git a/runtime/vm/compiler.cc b/runtime/vm/compiler.cc
index 64230f9d8ebf5549d4b5cc9e106d18679c077532..206a1c830acf72bfcc4aa3f6ea5b625d6ec57353 100644
--- a/runtime/vm/compiler.cc
+++ b/runtime/vm/compiler.cc
@@ -158,12 +158,12 @@ static bool CompileParsedFunctionHelper(const ParsedFunction& parsed_function,
       flow_graph = builder.BuildGraph(FlowGraphBuilder::kNotInlining);
     }
 
-    // Transform to SSA.
     if (optimized) {
       TimerScope timer(FLAG_compiler_stats,
                        &CompilerStats::ssa_timer,
                        isolate);
-      flow_graph->ComputeSSA(0);  // Start at virtual register 0.
+      // Transform to SSA (virtual register 0 and no inlining arguments).
+      flow_graph->ComputeSSA(0, NULL);
     }
 
     if (FLAG_print_flow_graph) {