Fix lazy deoptimization in the presence of exceptions

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/cpu.h"
@@ skipping 1823 matching lines @@
   __ ldr(R1, Address(SP, 0));  // StackTrace object.
   __ ldr(THR, Address(SP, 4));  // Thread.
   __ mov(FP, Operand(R2));  // Frame_pointer.
   __ mov(SP, Operand(IP));  // Set Stack pointer.
   // Set the tag.
   __ LoadImmediate(R2, VMTag::kDartTagId);
   __ StoreToOffset(kWord, R2, THR, Thread::vm_tag_offset());
   // Clear top exit frame.
   __ LoadImmediate(R2, 0);
   __ StoreToOffset(kWord, R2, THR, Thread::top_exit_frame_info_offset());
+  // Restore the pool pointer.
+  __ RestoreCodePointer();
+  __ LoadPoolPointer();
   __ bx(LR);  // Jump to the exception handler code.
 }
 
 
 // Calls to the runtime to optimize the given function.
 // R8: function to be reoptimized.
 // R4: argument descriptor (preserved).
 void StubCode::GenerateOptimizeFunctionStub(Assembler* assembler) {
   __ EnterStubFrame();
   __ Push(R4);
@@ skipping 357 matching lines @@
 }
 
 
 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) {
   __ bkpt(0);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM