Enable code optimization on ARM.

runtime/vm/code_generator.cc

 // Copyright (c) 2013, 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/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/bigint_operations.h"
 #include "vm/code_patcher.h"
@@ skipping 20 matching lines @@
     "Deoptimizes all live frames when we are about to return to Dart code from"
     " native entries.");
 DEFINE_FLAG(bool, trace_deoptimization, false, "Trace deoptimization");
 DEFINE_FLAG(bool, trace_deoptimization_verbose, false,
     "Trace deoptimization verbose");
 DEFINE_FLAG(bool, trace_ic, false, "Trace IC handling");
 DEFINE_FLAG(bool, trace_ic_miss_in_optimized, false,
     "Trace IC miss in optimized code");
 DEFINE_FLAG(bool, trace_patching, false, "Trace patching of code.");
 DEFINE_FLAG(bool, trace_runtime_calls, false, "Trace runtime calls");
-#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
+#if defined(TARGET_ARCH_IA32) ||                                               \
+    defined(TARGET_ARCH_X64) ||                                                \
+    defined(TARGET_ARCH_ARM)
 DEFINE_FLAG(int, optimization_counter_threshold, 3000,
     "Function's usage-counter value before it is optimized, -1 means never");
 #else
-// TODO(regis): Enable optimization on ARM and MIPS.
+// TODO(regis): Enable optimization on MIPS.
 DEFINE_FLAG(int, optimization_counter_threshold, -1,
     "Function's usage-counter value before it is optimized, -1 means never");
 #endif
 DECLARE_FLAG(bool, enable_type_checks);
 DECLARE_FLAG(bool, trace_type_checks);
 DECLARE_FLAG(bool, report_usage_count);
 DECLARE_FLAG(int, deoptimization_counter_threshold);
 DEFINE_FLAG(charp, optimization_filter, NULL, "Optimize only named function");
 DEFINE_FLAG(bool, trace_failed_optimization_attempts, false,
     "Traces all failed optimization attempts");
@@ skipping 1406 matching lines @@
       if (ContainsCid(classes, owner_cid)) {
         DeoptimizeAt(optimized_code, frame->pc());
       }
     }
   }
 }
 
 
 // Copy saved registers into the isolate buffer.
 static void CopySavedRegisters(uword saved_registers_address) {
+  ASSERT(sizeof(fpu_register_t) == kFpuRegisterSize);
   fpu_register_t* fpu_registers_copy =
       new fpu_register_t[kNumberOfFpuRegisters];
   ASSERT(fpu_registers_copy != NULL);
   for (intptr_t i = 0; i < kNumberOfFpuRegisters; i++) {
     fpu_registers_copy[i] =
         *reinterpret_cast<fpu_register_t*>(saved_registers_address);
     saved_registers_address += kFpuRegisterSize;
   }
   Isolate::Current()->set_deopt_fpu_registers_copy(fpu_registers_copy);
 
+  ASSERT(sizeof(intptr_t) == kWordSize);
   intptr_t* cpu_registers_copy = new intptr_t[kNumberOfCpuRegisters];
   ASSERT(cpu_registers_copy != NULL);
   for (intptr_t i = 0; i < kNumberOfCpuRegisters; i++) {
     cpu_registers_copy[i] =
         *reinterpret_cast<intptr_t*>(saved_registers_address);
     saved_registers_address += kWordSize;
   }
   Isolate::Current()->set_deopt_cpu_registers_copy(cpu_registers_copy);
 }
 
@@ skipping 228 matching lines @@
     ASSERT(top_frame != NULL);
     const Code& code = Code::Handle(top_frame->LookupDartCode());
     const Function& top_function = Function::Handle(code.function());
     const Script& script = Script::Handle(top_function.script());
     const intptr_t token_pos = code.GetTokenIndexOfPC(top_frame->pc());
     intptr_t line, column;
     script.GetTokenLocation(token_pos, &line, &column);
     String& line_string = String::Handle(script.GetLine(line));
     OS::PrintErr("  Function: %s\n", top_function.ToFullyQualifiedCString());
     OS::PrintErr("  Line %"Pd": '%s'\n", line, line_string.ToCString());
+    OS::PrintErr("  Deopt args: %"Pd"\n", deopt_arguments);
   }
 }
 
 
 DEFINE_LEAF_RUNTIME_ENTRY(intptr_t,
                           BigintCompare,
                           RawBigint* left,
                           RawBigint* right) {
   Isolate* isolate = Isolate::Current();
   StackZone zone(isolate);
@@ skipping 27 matching lines @@
 //   Arg1: Value that is being stored.
 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) {
   ASSERT(arguments.ArgCount() == kUpdateFieldCidRuntimeEntry.argument_count());
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   const Object& value = Object::Handle(arguments.ArgAt(1));
 
   field.UpdateCid(value.GetClassId());
 }
 
 }  // namespace dart