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 19074)
+++ runtime/vm/flow_graph_allocator.cc	(working copy)
@@ -78,10 +78,23 @@
     cpu_spill_slot_count_(0) {
   for (intptr_t i = 0; i < vreg_count_; i++) live_ranges_.Add(NULL);
 

[srdjan, 2013/02/26 23:23:09]

You don't need to set to false, blocked_cpu_registers_() is initializing the
array to false already.

[regis, 2013/02/27 00:19:26]

Where does this happen? Does blocked_cpu_registers_() in the initializer list of
the constructor initialize the array?

[srdjan, 2013/02/27 00:27:24]

Yes.

+  // Mark all available registers free.
+  for (intptr_t i = 0; i < kFirstFreeCpuRegister; i++) {
+    blocked_cpu_registers_[i] = true;
+  }
+  for (intptr_t i = kFirstFreeCpuRegister; i <= kLastFreeCpuRegister; i++) {
+    blocked_cpu_registers_[i] = false;
+  }
+  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;