Clean up global variables related to precompilation.

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
diff --git a/runtime/vm/flow_graph_inliner.cc b/runtime/vm/flow_graph_inliner.cc
index 1b39f976e7d126cab98f2a7aa253a06e6771657c..d0d6b3eee4490e9066230452136bcf02b537f9fb 100644
--- a/runtime/vm/flow_graph_inliner.cc
+++ b/runtime/vm/flow_graph_inliner.cc
@@ -61,6 +61,7 @@ DEFINE_FLAG(bool, enable_inlining_annotations, false,
 DECLARE_FLAG(bool, compiler_stats);
 DECLARE_FLAG(int, max_deoptimization_counter_threshold);
 DECLARE_FLAG(bool, polymorphic_with_deopt);
+DECLARE_FLAG(bool, precompilation);
 DECLARE_FLAG(bool, print_flow_graph);
 DECLARE_FLAG(bool, print_flow_graph_optimized);
 DECLARE_FLAG(bool, verify_compiler);
@@ -629,7 +630,7 @@ class CallSiteInliner : public ValueObject {
 
     // Function has no type feedback. With precompilation we don't rely on
     // type feedback.
-    if (!Compiler::always_optimize() &&
+    if (!FLAG_precompilation &&
         function.ic_data_array() == Object::null()) {
       TRACE_INLINING(THR_Print("     Bailout: not compiled yet\n"));
       PRINT_INLINING_TREE("Not compiled",
@@ -786,7 +787,7 @@ class CallSiteInliner : public ValueObject {
           FlowGraphOptimizer optimizer(callee_graph,
                                        inliner_->use_speculative_inlining_,
                                        inliner_->inlining_black_list_);
-          if (Compiler::always_optimize()) {
+          if (FLAG_precompilation) {
             optimizer.PopulateWithICData();
 
             optimizer.ApplyClassIds();
@@ -913,7 +914,7 @@ class CallSiteInliner : public ValueObject {
     // Propagate a compile-time error. Only in precompilation do we attempt to
     // inline functions that have never been compiled before; when JITing we
     // should only see compile-time errors in unoptimized compilation.
-    ASSERT(Compiler::always_optimize());
+    ASSERT(FLAG_precompilation);
     Thread::Current()->long_jump_base()->Jump(1, error);
     UNREACHABLE();
     return false;