- Make Boolean 'true' and 'false' singleton VM isolate objects.

vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2012, 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_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 43 matching lines @@
 
 // Fall through if bool_register contains null.
 void FlowGraphCompiler::GenerateBoolToJump(Register bool_register,
                                            Label* is_true,
                                            Label* is_false) {
   const Immediate raw_null =
       Immediate(reinterpret_cast<intptr_t>(Object::null()));
   Label fall_through;
   __ cmpq(bool_register, raw_null);
   __ j(EQUAL, &fall_through, Assembler::kNearJump);
-  __ CompareObject(bool_register, bool_true());
+  __ CompareObject(bool_register, Bool::True());
   __ j(EQUAL, is_true);
   __ jmp(is_false);
   __ Bind(&fall_through);
 }
 
 
 // Clobbers RCX.
 RawSubtypeTestCache* FlowGraphCompiler::GenerateCallSubtypeTestStub(
     TypeTestStubKind test_kind,
     Register instance_reg,
@@ skipping 414 matching lines @@
     __ pushq(RCX);  // TODO(srdjan): Pass instantiator instead of null.
     __ pushq(RDX);  // Instantiator type arguments.
     __ LoadObject(RAX, test_cache);
     __ pushq(RAX);
     GenerateCallRuntime(token_pos, kInstanceofRuntimeEntry, locs);
     // Pop the parameters supplied to the runtime entry. The result of the
     // instanceof runtime call will be left as the result of the operation.
     __ Drop(5);
     if (negate_result) {
       __ popq(RDX);
-      __ LoadObject(RAX, bool_true());
+      __ LoadObject(RAX, Bool::True());
       __ cmpq(RDX, RAX);
       __ j(NOT_EQUAL, &done, Assembler::kNearJump);
-      __ LoadObject(RAX, bool_false());
+      __ LoadObject(RAX, Bool::False());
     } else {
       __ popq(RAX);
     }
     __ jmp(&done, Assembler::kNearJump);
   }
   __ Bind(&is_not_instance);
-  __ LoadObject(RAX, negate_result ? bool_true() : bool_false());
+  __ LoadObject(RAX, negate_result ? Bool::True() : Bool::False());
   __ jmp(&done, Assembler::kNearJump);
 
   __ Bind(&is_instance);
-  __ LoadObject(RAX, negate_result ? bool_false() : bool_true());
+  __ LoadObject(RAX, negate_result ? Bool::False() : Bool::True());
   __ Bind(&done);
   __ popq(RDX);  // Remove pushed instantiator type arguments.
   __ popq(RCX);  // Remove pushed instantiator.
 }
 
 
 // Optimize assignable type check by adding inlined tests for:
 // - NULL -> return NULL.
 // - Smi -> compile time subtype check (only if dst class is not parameterized).
 // - Class equality (only if class is not parameterized).
@@ skipping 719 matching lines @@
   __ cmpq(Address(RSP, 0 * kWordSize), raw_null);
   __ j(EQUAL, &check_identity, Assembler::kNearJump);
   __ cmpq(Address(RSP, 1 * kWordSize), raw_null);
   __ j(NOT_EQUAL, &fall_through, Assembler::kNearJump);
 
   __ Bind(&check_identity);
   __ popq(result);
   __ cmpq(result, Address(RSP, 0 * kWordSize));
   Label is_false;
   __ j(NOT_EQUAL, &is_false, Assembler::kNearJump);
-  __ LoadObject(result, bool_true());
+  __ LoadObject(result, Bool::True());
   __ Drop(1);
   __ jmp(skip_call);
   __ Bind(&is_false);
-  __ LoadObject(result, bool_false());
+  __ LoadObject(result, Bool::False());
   __ Drop(1);
   __ jmp(skip_call);
   __ Bind(&fall_through);
 }
 
 
 void FlowGraphCompiler::LoadDoubleOrSmiToXmm(XmmRegister result,
                                              Register reg,
                                              Register temp,
                                              Label* not_double_or_smi) {
@@ skipping 209 matching lines @@
 void ParallelMoveResolver::Exchange(const Address& mem1, const Address& mem2) {
   __ Exchange(mem1, mem2);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64