In gcmole assume that methods exiting VM can cause GC.

tools/gcmole/gcmole.lua

 -- Copyright 2011 the V8 project authors. All rights reserved.
 -- Redistribution and use in source and binary forms, with or without
 -- modification, are permitted provided that the following conditions are
 -- met:
 --
 --     * Redistributions of source code must retain the above copyright
 --       notice, this list of conditions and the following disclaimer.
 --     * Redistributions in binary form must reproduce the above
 --       copyright notice, this list of conditions and the following
 --       disclaimer in the documentation and/or other materials provided
@@ skipping 88 matching lines @@
       .. " -D" .. arch_define
       .. " -DENABLE_DEBUGGER_SUPPORT"
       .. " -Isrc"
 end
 
 function InvokeClangPluginForEachFile(filenames, cfg, func)
    local cmd_line = MakeClangCommandLine(cfg.plugin,
                                          cfg.plugin_args,
                                          cfg.triple,
                                          cfg.arch_define)
-
    for _, filename in ipairs(filenames) do
       log("-- %s", filename)
       local action = cmd_line .. " src/" .. filename .. " 2>&1"
       if FLAGS.verbose then print('popen ', action) end
       local pipe = io.popen(action)
       func(filename, pipe:lines())
       pipe:close()
    end
 end
 
@@ skipping 91 matching lines @@
 
    -- DirectCEntryStub is a special stub used on ARM. 
    -- It is pinned and always present.
    "DirectCEntryStub.*GenerateCall",  
 
    -- TODO GCMole currently is sensitive enough to understand that certain 
    --      functions only cause GC and return Failure simulataneously. 
    --      Callsites of such functions are safe as long as they are properly 
    --      check return value and propagate the Failure to the caller.
    --      It should be possible to extend GCMole to understand this.
-   "Heap.*AllocateFunctionPrototype"
+   "Heap.*AllocateFunctionPrototype",
+
+   -- Ignore all StateTag methods.
+   "StateTag",
+
+   -- Ignore printing of elements transition.
+   "PrintElementsTransition"
 };
 
 local function AddCause(name, cause)
    local t = gc_caused[name]
    if not t then
       t = {}
       gc_caused[name] = t
    end
    table.insert(t, cause)
 end
@@ skipping 135 matching lines @@
 
 for _, arch in ipairs(ARCHS) do
    if not ARCHITECTURES[arch] then
       error ("Unknown arch: " .. arch)
    end
 
    errors = SafeCheckCorrectnessForArch(arch, report) or errors
 end
 
 os.exit(errors and 1 or 0)