Cleanup of branch code generation (no change in functionality).

runtime/vm/flow_graph_compiler_x64.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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1622 matching lines @@
     __ Drop(argument_count);
     if (!is_last_check) {
       assembler()->jmp(&match_found);
     }
     assembler()->Bind(&next_test);
   }
   assembler()->Bind(&match_found);
 }
 
 
-void FlowGraphCompiler::EmitDoubleCompareBranch(Condition true_condition,
-                                                FpuRegister left,
-                                                FpuRegister right,
-                                                BranchInstr* branch) {
-  ASSERT(branch != NULL);
-  assembler()->comisd(left, right);
-  BlockEntryInstr* nan_result = (true_condition == NOT_EQUAL) ?
-      branch->true_successor() : branch->false_successor();
-  assembler()->j(PARITY_EVEN, GetJumpLabel(nan_result));
-  branch->EmitBranchOnCondition(this, true_condition);
-}
-
-
-void FlowGraphCompiler::EmitDoubleCompareBool(Condition true_condition,
-                                              FpuRegister left,
-                                              FpuRegister right,
-                                              Register result) {
-  assembler()->comisd(left, right);
-  Label is_false, is_true, done;
-  // x == NaN -> false, x != NaN -> true.
-  Label* nan_label = (true_condition == NOT_EQUAL) ? &is_true : &is_false;
-  assembler()->j(PARITY_EVEN, nan_label, Assembler::kNearJump);
-  assembler()->j(true_condition, &is_true, Assembler::kNearJump);
-  assembler()->Bind(&is_false);
-  assembler()->LoadObject(result, Bool::False(), PP);
-  assembler()->jmp(&done);
-  assembler()->Bind(&is_true);
-  assembler()->LoadObject(result, Bool::True(), PP);
-  assembler()->Bind(&done);
-}
-
-
 FieldAddress FlowGraphCompiler::ElementAddressForIntIndex(intptr_t cid,
                                                           intptr_t index_scale,
                                                           Register array,
                                                           intptr_t index) {
   const int64_t disp =
       static_cast<int64_t>(index) * index_scale + DataOffsetFor(cid);
   ASSERT(Utils::IsInt(32, disp));
   return FieldAddress(array, static_cast<int32_t>(disp));
 }
 
@@ skipping 245 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize), PP);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64