Adds support for ARMv6.

runtime/vm/stub_code_arm.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"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 510 matching lines @@
   __ LeaveStubFrame();
   // Remove materialization arguments.
   __ add(SP, SP, ShifterOperand(R1, ASR, kSmiTagSize));
   __ Ret();
 }
 
 
 void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) {
   // Correct return address to point just after the call that is being
   // deoptimized.
-  __ AddImmediate(LR, -CallPattern::kFixedLengthInBytes);
+  __ AddImmediate(LR, -CallPattern::LengthInBytes());
   GenerateDeoptimizationSequence(assembler, true);  // Preserve R0.
 }
 
 
 void StubCode::GenerateDeoptimizeStub(Assembler* assembler) {
   GenerateDeoptimizationSequence(assembler, false);  // Don't preserve R0.
 }
 
 
 void StubCode::GenerateMegamorphicMissStub(Assembler* assembler) {
@@ skipping 1401 matching lines @@
   const Register right = R0;
   __ ldr(left, Address(SP, 1 * kWordSize));
   __ ldr(right, Address(SP, 0 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM