Compile and simulate first dart function on arm generated from ast.

runtime/vm/flow_graph_allocator.cc

Index: runtime/vm/flow_graph_allocator.cc
===================================================================
--- runtime/vm/flow_graph_allocator.cc	(revision 19151)
+++ runtime/vm/flow_graph_allocator.cc	(working copy)
@@ -78,10 +78,21 @@
     cpu_spill_slot_count_(0) {
   for (intptr_t i = 0; i < vreg_count_; i++) live_ranges_.Add(NULL);
 
+  // All registers are marked as "not blocked" (array initialized to false).
+  // Mark the unavailable ones as "blocked" (true).
+  for (intptr_t i = 0; i < kFirstFreeCpuRegister; i++) {
+    blocked_cpu_registers_[i] = true;
+  }
+  for (intptr_t i = kLastFreeCpuRegister + 1; i < kNumberOfCpuRegisters; i++) {
+    blocked_cpu_registers_[i] = true;
+  }
   blocked_cpu_registers_[CTX] = true;
   if (TMP != kNoRegister) {
     blocked_cpu_registers_[TMP] = true;
   }
+  if (PP != kNoRegister) {
+    blocked_cpu_registers_[PP] = true;
+  }
   blocked_cpu_registers_[SPREG] = true;
   blocked_cpu_registers_[FPREG] = true;