Enable generation of instruction buffer on precompilation

runtime/tools/create_snapshot_bin.py

Index: runtime/tools/create_snapshot_bin.py
diff --git a/runtime/tools/create_snapshot_bin.py b/runtime/tools/create_snapshot_bin.py
index b91de38e86353a40e7e1ed131e3840161aeda87b..8da6a0f5adf7751c088c5661db8fdf286850e966 100755
--- a/runtime/tools/create_snapshot_bin.py
+++ b/runtime/tools/create_snapshot_bin.py
@@ -32,6 +32,13 @@ def BuildOptions():
       action="store", type="string",
       help="output file name into which isolate snapshot in binary form " +
            "is generated")
+  result.add_option("--instructions_bin",
+      action="store", type="string",
+      help="output file name into which instructions snapshot in binary form " +

[rmacnak, 2015/10/21 23:06:18]

It's in assembly form, not binary form.

[Chinmay, 2015/10/22 00:13:17]

ack

+           "is generated")
+  result.add_option("--vm_entry_points_manifest",
+      action="store", type="string",
+      help="input manifest with the vm entry points in a precompiled snapshot")
   result.add_option("--script",
       action="store", type="string",
       help="Dart script for which snapshot is to be generated")
@@ -108,6 +115,16 @@ def Main():
                                options.vm_output_bin ]))
   script_args.append(''.join([ "--isolate_snapshot=", options.output_bin ]))
 
+  # Setup the instuctions snapshot output filename
+  if options.instructions_bin:
+    script_args.append(''.join([ "--instructions_snapshot=",
+                                 options.instructions_bin ]))
+
+  # Specify the VM entry points snapshot
+  if options.vm_entry_points_manifest:
+    script_args.append(''.join([ "--vm_entry_points_manifest=",
+                                 options.vm_entry_points_manifest ]))
+
   # Next setup all url mapping options specified.
   for url_arg in options.url_mapping:
     url_mapping_argument = ''.join(["--url_mapping=", url_arg ])