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

runtime/vm/flow_graph_compiler.cc

Index: runtime/vm/flow_graph_compiler.cc
===================================================================
--- runtime/vm/flow_graph_compiler.cc	(revision 19074)
+++ runtime/vm/flow_graph_compiler.cc	(working copy)
@@ -674,9 +674,15 @@
   bool blocked_registers[kNumberOfCpuRegisters];
 
   // Mark all available registers free.
-  for (intptr_t i = 0; i < kNumberOfCpuRegisters; i++) {
+  for (intptr_t i = 0; i < kFirstFreeCpuRegister; i++) {
+    blocked_registers[i] = true;
+  }
+  for (intptr_t i = kFirstFreeCpuRegister; i <= kLastFreeCpuRegister; i++) {
     blocked_registers[i] = false;
   }
+  for (intptr_t i = kLastFreeCpuRegister + 1; i < kNumberOfCpuRegisters; i++) {
+    blocked_registers[i] = true;
+  }
 
   // Mark all fixed input, temp and output registers as used.
   for (intptr_t i = 0; i < locs->input_count(); i++) {
@@ -708,6 +714,9 @@
   if (TMP != kNoRegister) {
     blocked_registers[TMP] = true;
   }
+  if (PP != kNoRegister) {
+    blocked_registers[PP] = true;
+  }
 
   // Allocate all unallocated input locations.
   const bool should_pop = !instr->IsPushArgument();