Add source position information to profile

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 524 matching lines @@
     // Compile all successors until an exit, branch, or a block entry.
     for (ForwardInstructionIterator it(entry); !it.Done(); it.Advance()) {
       Instruction* instr = it.Current();
       // Compose intervals.
       if (instr->has_inlining_id() && is_optimizing()) {
         if (prev_inlining_id != instr->inlining_id()) {
           intervals.Add(
               IntervalStruct(prev_offset, prev_inlining_pos, prev_inlining_id));
           prev_offset = assembler()->CodeSize();
           prev_inlining_id = instr->inlining_id();
-          prev_inlining_pos = inline_id_to_token_pos_[prev_inlining_id];
+          if (prev_inlining_id < inline_id_to_token_pos_.length()) {

[srdjan, 2016/03/02 19:02:55]

Add comment something like: id_to_token_pos is added later when encountering a
call

[Cutch, 2016/03/02 19:14:07]

Done.

+            prev_inlining_pos = inline_id_to_token_pos_[prev_inlining_id];
+          } else {
+            prev_inlining_pos = TokenPosition::kNoSource;
+          }
           if (prev_inlining_id > max_inlining_id) {
             max_inlining_id = prev_inlining_id;
           }
         }
       }
       if (FLAG_code_comments ||
           FLAG_disassemble || FLAG_disassemble_optimized) {
         if (FLAG_source_lines) {
           EmitSourceLine(instr);
         }
@@ skipping 1379 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart