Build CodeSourceMap for each code object

runtime/vm/flow_graph_compiler_x64.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_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1119 matching lines @@
           __ StoreObject(
               Address(RBP, (slot_base - i) * kWordSize), empty_context);
         }
       } else {
         ASSERT(num_locals > 1);
         __ movq(Address(RBP, (slot_base - i) * kWordSize), RAX);
       }
     }
   }
 
+  MaybeEmitCodeSourceMapEntry(TokenPosition::kDartCodePrologue);
   ASSERT(!block_order().is_empty());
   VisitBlocks();
 
   __ int3();
   ASSERT(assembler()->constant_pool_allowed());
   GenerateDeferredCode();
   // Emit function patching code. This will be swapped with the first 13 bytes
   // at entry point.
 
+  SaveCodeSize();
   if (is_optimizing() && !FLAG_precompilation) {
     // Leave enough space for patching in case of lazy deoptimization from
     // deferred code.
     __ nop(ShortCallPattern::pattern_length_in_bytes());
     lazy_deopt_pc_offset_ = assembler()->CodeSize();
     __ Jmp(*StubCode::DeoptimizeLazy_entry(), PP);
   }
+  MaybeEmitCodeSourceMapEntry(TokenPosition::kDartCodeEpilogue);
 }
 
 
 void FlowGraphCompiler::GenerateCall(TokenPosition token_pos,
                                      const StubEntry& stub_entry,
                                      RawPcDescriptors::Kind kind,
                                      LocationSummary* locs) {
   __ Call(stub_entry);
   AddCurrentDescriptor(kind, Thread::kNoDeoptId, token_pos);
   RecordSafepoint(locs);
@@ skipping 654 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64