Collect edge count profiling data and reorder basic blocks.

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
diff --git a/runtime/vm/intermediate_language.cc b/runtime/vm/intermediate_language.cc
index b04cc21913e7549c5ee4d3a418d8e44c12b06212..1acc66dd66fc5920e1373685f0fc9d62f3d0c924 100644
--- a/runtime/vm/intermediate_language.cc
+++ b/runtime/vm/intermediate_language.cc
@@ -256,6 +256,7 @@ GraphEntryInstr::GraphEntryInstr(const ParsedFunction& parsed_function,
       catch_entries_(),
       initial_definitions_(),
       osr_id_(osr_id),
+      entry_count_(0),
       spill_slot_count_(0),
       fixed_slot_count_(0) {
 }
@@ -794,6 +795,7 @@ void BlockEntryInstr::DiscoverBlocks(
 
 bool BlockEntryInstr::PruneUnreachable(FlowGraphBuilder* builder,
                                        GraphEntryInstr* graph_entry,
+                                       Instruction* parent,
                                        intptr_t osr_id,
                                        BitVector* block_marks) {
   // Search for the instruction with the OSR id.  Use a depth first search
@@ -820,7 +822,7 @@ bool BlockEntryInstr::PruneUnreachable(FlowGraphBuilder* builder,
       ASSERT(instr->previous() == this);
 
       GotoInstr* goto_join = new GotoInstr(AsJoinEntry());
-      goto_join->deopt_id_ = deopt_id_;
+      goto_join->deopt_id_ = parent->deopt_id_;
       graph_entry->normal_entry()->LinkTo(goto_join);
       return true;
     }
@@ -830,6 +832,7 @@ bool BlockEntryInstr::PruneUnreachable(FlowGraphBuilder* builder,
   for (intptr_t i = instr->SuccessorCount() - 1; i >= 0; --i) {
     if (instr->SuccessorAt(i)->PruneUnreachable(builder,
                                                 graph_entry,
+                                                instr,
                                                 osr_id,
                                                 block_marks)) {
       return true;
@@ -1545,19 +1548,6 @@ LocationSummary* TargetEntryInstr::MakeLocationSummary() const {
 }
 
 
-void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  __ Bind(compiler->GetJumpLabel(this));
-  if (!compiler->is_optimizing()) {
-    compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
-                                   deopt_id_,
-                                   Scanner::kDummyTokenIndex);
-  }
-  if (HasParallelMove()) {
-    compiler->parallel_move_resolver()->EmitNativeCode(parallel_move());
-  }
-}
-
-
 LocationSummary* CatchBlockEntryInstr::MakeLocationSummary() const {
   UNREACHABLE();
   return NULL;