Instrinsics on object pool architectures must preserve CODE_REG.

runtime/vm/flow_graph_compiler.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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 1535 matching lines @@
 
 ParallelMoveResolver::ScratchRegisterScope::ScratchRegisterScope(
     ParallelMoveResolver* resolver, Register blocked)
     : resolver_(resolver),
       reg_(kNoRegister),
       spilled_(false) {
   uword blocked_mask = RegMaskBit(blocked) | kReservedCpuRegisters;
   if (resolver->compiler_->intrinsic_mode()) {
     // Block additional registers that must be preserved for intrinsics.
     blocked_mask |= RegMaskBit(ARGS_DESC_REG);
+#if !defined(TARGET_ARCH_IA32)
+    // Need to preserve CODE_REG to be able to store the PC marker
+    // and load the pool pointer.
+    blocked_mask |= RegMaskBit(CODE_REG);
+#endif
   }
   reg_ = static_cast<Register>(
       resolver_->AllocateScratchRegister(Location::kRegister,
                                          blocked_mask,
                                          0,
                                          kNumberOfCpuRegisters - 1,
                                          &spilled_));
 
   if (spilled_) {
     resolver->SpillScratch(reg_);
@@ skipping 249 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart