Fixes bug in far branches on MIPS.

runtime/vm/assembler_arm_test.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/os.h"
 #include "vm/unit_test.h"
@@ skipping 460 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(ForwardBranch, test) {
   EXPECT(test != NULL);
   typedef int (*ForwardBranch)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT32(ForwardBranch, test->entry()));
 }
 
 
+ASSEMBLER_TEST_GENERATE(Loop2, assembler) {
+  Label loop_entry;
+  __ set_use_far_branches(true);
+  __ mov(R0, ShifterOperand(1));
+  __ mov(R1, ShifterOperand(2));
+  __ Bind(&loop_entry);
+  __ mov(R0, ShifterOperand(R0, LSL, 1));
+  __ movs(R1, ShifterOperand(R1, LSR, 1));
+  __ b(&loop_entry, NE);
+  __ bx(LR);
+}
+
+
+ASSEMBLER_TEST_RUN(Loop2, test) {
+  EXPECT(test != NULL);
+  typedef int (*Loop)();
+  EXPECT_EQ(4, EXECUTE_TEST_CODE_INT32(Loop, test->entry()));
+}
+
+
+ASSEMBLER_TEST_GENERATE(Loop3, assembler) {
+  Label loop_entry;
+  __ set_use_far_branches(true);
+  __ mov(R0, ShifterOperand(1));
+  __ mov(R1, ShifterOperand(2));
+  __ Bind(&loop_entry);
+  for (int i = 0; i < (1 << 22); i++) {
+    __ nop();
+  }
+  __ mov(R0, ShifterOperand(R0, LSL, 1));
+  __ movs(R1, ShifterOperand(R1, LSR, 1));
+  __ b(&loop_entry, NE);
+  __ bx(LR);
+}
+
+
+ASSEMBLER_TEST_RUN(Loop3, test) {
+  EXPECT(test != NULL);
+  typedef int (*Loop)();
+  EXPECT_EQ(4, EXECUTE_TEST_CODE_INT32(Loop, test->entry()));
+}
+
+
 ASSEMBLER_TEST_GENERATE(LoadStore, assembler) {
   __ mov(R1, ShifterOperand(123));
   __ Push(R1);
   __ Pop(R0);
   __ bx(LR);
 }
 
 
 ASSEMBLER_TEST_RUN(LoadStore, test) {
   EXPECT(test != NULL);
@@ skipping 3049 matching lines @@
   __ StoreIntoObject(R2,
                      FieldAddress(R2, GrowableObjectArray::data_offset()),
                      R1);
   __ PopList((1 << CTX) | (1 << LR));
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM