Clean up global variables related to precompilation.

runtime/vm/flow_graph_compiler_arm64.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/compiler.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
 #include "vm/deopt_instructions.h"
 #include "vm/il_printer.h"
 #include "vm/instructions.h"
 #include "vm/locations.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/stack_frame.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, trap_on_deoptimization, false, "Trap on deoptimization.");
 DECLARE_FLAG(bool, enable_simd_inline);
 DECLARE_FLAG(bool, use_megamorphic_stub);
+DECLARE_FLAG(bool, precompilation);
 
 
 void MegamorphicSlowPath::EmitNativeCode(FlowGraphCompiler* compiler) {
   Assembler* assembler = compiler->assembler();
 #define __ assembler->
   __ Bind(entry_label());
   __ Comment("MegamorphicSlowPath");
   compiler->EmitMegamorphicInstanceCall(ic_data_, argument_count_, deopt_id_,
                                         token_pos_, locs_, try_index_);
   __ b(exit_label());
@@ skipping 1071 matching lines @@
       }
     }
   }
 
   VisitBlocks();
 
   __ brk(0);
   ASSERT(assembler()->constant_pool_allowed());
   GenerateDeferredCode();
 
-  if (is_optimizing() && Compiler::allow_recompilation()) {
+  if (is_optimizing() && !FLAG_precompilation) {
     // Leave enough space for patching in case of lazy deoptimization from
     // deferred code.
     for (intptr_t i = 0;
       i < CallPattern::kDeoptCallLengthInInstructions;
       ++i) {
       __ orr(R0, ZR, Operand(R0));  // nop
     }
     lazy_deopt_pc_offset_ = assembler()->CodeSize();
   __ BranchPatchable(*StubCode::DeoptimizeLazy_entry());
   }
@@ skipping 132 matching lines @@
   __ LoadObject(R5, cache);
   if (FLAG_use_megamorphic_stub) {
     __ BranchLink(*StubCode::MegamorphicLookup_entry());
   } else  {
     StubCode::EmitMegamorphicLookup(assembler());
   }
   __ blr(R1);
 
   RecordSafepoint(locs);
   const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id);
-  if (Compiler::always_optimize()) {
+  if (FLAG_precompilation) {
     // Megamorphic calls may occur in slow path stubs.
     // If valid use try_index argument.
     if (try_index == CatchClauseNode::kInvalidTryIndex) {
       try_index = CurrentTryIndex();
     }
     pc_descriptors_list()->AddDescriptor(RawPcDescriptors::kOther,
                                          assembler()->CodeSize(),
                                          Thread::kNoDeoptId,
                                          token_pos,
                                          try_index);
@@ skipping 588 matching lines @@
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   __ PopDouble(reg);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64